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| 1 | Surface Nanocrystallization (SNC) of Metallic Materials-Presentation of the Concept behind a New Approach显示文摘In this paper, a concept of surface nanocrystallization (SNC) of metallic materials is introduced.Three types of SNC processes are classified. Different SNC mechanisms and possible techniques for SNC are discussed with emphasis on mechanically induced surface self-nanocrystallization.Further development and prospects are addressed with respect to the properties and behaviors of the materials with a nanocrystalline surface. Enhancement of the behavior of the engineering materials by means of the SNC technology and its industrial application possibilities are analyzed. | Lu, K Lu, J | 1999 | Journal of Materials Science & Technology1999，15，3： | 296 |
| 2 | Metal Fabrication by Additive Manufacturing Using Laser and Electron Beam Melting Technologies显示文摘Selective laser melting (SLM) and electron beam melting (EBM) are relatively new rapid, additive manufac- turing technologies which can allow for the fabrication of complex, multi-functional metal or alloy monoliths by CAD-directed, selective melting of precursor powder beds. By altering the beam parameters and scan strategies, new and unusual, even non-equilibrium microstructures can be produced; including controlled microstructural architectures which ideally extend the contemporary materials science and engineering paradigm relating structure-properties-processing-performance. In this study, comparative examples for SLM and EBM fabricated components from pre-alloyed, atomized precursor powders are presented. These include Cu, Ti–6Al–4V, alloy 625 (a Ni-base superalloy), a Co-base superalloy, and 17-4 PH stainless steel. These systems are characterized by optical metallography, scanning and transmission electron microscopy, and X-ray diffraction. | Lawrence E. Murr Sara M. Gaytan Diana A. Ramirez Edwin Martinez Jennifer Hernandez Krista N. Amato Patrick W. Shindo Francisco R. Medina Ryan B. Wicker | 2012 | Journal of Materials Science & Technology2012，28，1： | 98 |
| 3 | Corrosion Resistance of Graphene-Reinforced Waterborne Epoxy Coatings显示文摘Graphene(G) was dispersed uniformly in water and used as an inhibitor in waterborne epoxy coatings.The effect of dispersed G on anticorrosion performance of epoxy coatings was evaluated.The composite coatings displayed outstanding barrier properties against H_2O molecule compared to the neat epoxy coating.Open circuit potential(OCP),Tafel and electrochemical impedance spectroscopy(EIS)analysis con-?rmed that the corrosion rate exhibited by composite coatings with 0.5 wt%G was an order of magnitude lower than that of neat epoxy coating.Salt spray test results revealed superior corrosion resistance offered by the composite coating. | Shuan Liu Lin Gu Haichao Zhao Jianmin Chen Haibin Yu | 2016 | Journal of Materials Science & Technology2016，32，5： | 67 |
| 4 | A Review on Casting Magnesium Alloys: Modification of Commercial Alloys and Development of New Alloys显示文摘The research and development status of casting magnesium alloys including the commercial casting alloys and the new types casting alloys are reviewed,with more attention to microstructure and mechanical properties of modified-AZ91,AM60 and WE43 alloys with various additions,and new types of low cost casting alloys and high strength casting alloys.The modification and/or refinement of Mg2 Si phase in Mg–Al–Si based casting alloys by various additions are discussed and new purifying technologies for casting magnesium alloys are introduced to improve the performance.The modified AZ81 alloy with reduced impurities is found to have the tensile strength of 280 ± 6 MPa and elongation of 16% ± 0.7%.The fatigue strength of AZ91 D alloy could be obviously improved by addition of Ce and Nd.The Mg–16Gd–2Ag–0.3Zr alloy exhibits very high tensile and yield strengths(UTS:423 MPa and YS:328 MPa);however,its elongation still needs to be improved. | Fusheng Pan Mingbo Yang Xianhua Chen | 2016 | Journal of Materials Science & Technology2016，32，12： | 78 |
| 5 | Friction stir based welding and processing technologies-processes,parameters,microstructures and applications:A review显示文摘Friction stir welding(FSW) has achieved remarkable success in the joining and processing of aluminium alloys and other softer structural alloys. Conventional FSW, however, has not been entirely successful in the joining, processing and manufacturing of different desired materials essential to meet the sophisticated green globe requirements. Through the efforts of improving the process and transferring the existing friction stir knowledge base to other advanced applications, several friction stir based daughter technologies have emerged over the timeline. A few among these technologies are well developed while others are under the process of emergence. Beginning with a broad classification of the scattered frictions stir based technologies into two categories, welding and processing, it appears now time to know,compile and review these to enable their rapid access for reference and academia. In this review article,the friction stir based technologies classified under the category of welding are those applied for joining of materials while the remnant are labeled as friction stir processing(FSP) technologies. This review article presents an overview of four general aspects of both the developed and the developing friction stir based technologies, their associated process parameters, metallurgical features of their products and their feasibility and application to various materials. The lesser known and emerging technologies have been emphasized. | G.K.Padhy C.S.Wu S.Gao | 2018 | Journal of Materials Science & Technology2018，34，1： | 65 |
| 6 | A review of selective laser melting of aluminum alloys: Processing,microstructure, property and developing trends显示文摘Selective laser melting(SLM) is an attractive rapid prototyping technology for the fabrication of metallic components with complex structure and high performance. Aluminum alloy, one of the most pervasive structural materials, is well known for high specific strength and good corrosion resistance. But the poor laser formability of aluminum alloy restricts its application. There are problems such as limited processable materials, immature process conditions and metallurgical defects on SLM processing aluminum alloys. Some efforts have been made to solve the above problems. This paper discusses the current research status both related to the scientific understanding and technology applications. The paper begins with a brief introduction of basic concepts of aluminum alloys and technology characterization of laser selective melting. In addition, solidification theory of SLM process and formation mechanism of metallurgical defects are discussed. Then, the current research status of microstructure, properties and heat treatment of SLM processing aluminum alloys is systematically reviewed respectively. Lastly, a future outlook is given at the end of this review paper. | Jinliang Zhang Bo Song Qingsong Wei Dave Bourell Yusheng Shi | 2019 | Journal of Materials Science & Technology2019，35，2： | 77 |
| 7 | Novel Magnesium Alloys Developed for Biomedical Application:A Review显示文摘There is an increasing interest in the development of magnesium alloys both for industrial and biomedical applications.Industrial interest in magnesium alloys is based on strong demand of weight reduction of transportation vehicles for better fuel efficiency,so higher strength,and better ductility and corrosion resistance are required.Nevertheless,biomedical magnesium alloys require appropriate mechanical properties, suitable degradation rate in physiological environment,and what is most important,biosafety to human body. Rather than simply apply commercial magnesium alloys to biomedical field,new alloys should be designed from the point of view of nutriology and toxicology.This article provides a review of state-of-the-art of magnesium alloy implants and devices for orthopedic,cardiovascular and tissue engineering applications. Advances in new alloy design,novel structure design and surface modification are overviewed.The factors that influence the corrosion behavior of magnesium alloys are discussed and the strategy in the future development of biomedical magnesium alloys is proposed. | Nan Li Yufeng Zheng | 2013 | Journal of Materials Science & Technology2013，29，6： | 58 |
| 8 | Design, Preparation and Properties of Carbon Fiber Reinforced Ultra-High Temperature Ceramic Composites for Aerospace Applications: A Review显示文摘Carbon fiber reinforced ultra-high temperature ceramic(UHTC) composites, consisting of carbon fibers embedded in a UHTC-matrix or a C–SiC–UHTC-matrix, are deemed as the most viable class of materials that can overcome the poor fracture toughness and thermal shock resistance of monolithic UHTC materials, and also improve the oxidation resistance and ablation resistance of C/C and C/SiC composites at ultra-high temperatures. In this review, we summarize the different processing routes of the composites based on the UHTC introducing methods, including chemical vapor infiltration/deposition(CVI/D),precursor infiltration and pyrolysis(PIP), reactive melt infiltration(RMI), slurry infiltration(SI), in-situ reaction, hot pressing(HP), etc; and the advantages and drawbacks of each method are briefly discussed. The carbon fiber reinforced UHTC composites can be highly tailorable materials in terms of fiber,interface, and matrix. From the perspective of service environmental applications for engine propulsions and hypersonic vehicles, the material designs(mainly focusing on the composition, quantity, structure of matrix, as well as the architecture of carbon fibers, UHTCs and pores), their relevant processing routes and properties(emphasizing on the mechanical and ablation properties) are discussed in this paper. In addition, we propose a material architecture to realize the multi-function through changing the distribution of carbon fibers, UHTCs and pores, which will be an important issue for future development of carbon fiber reinforced UHTC composites. | Sufang Tang Chenglong Hu | 2017 | Journal of Materials Science & Technology2017，33，2： | 51 |
| 9 | Effect of Microstructure Refinement on the Strength and Toughness of Low Alloy Martensitic Steel显示文摘马氏体的微观结构在熄灭,有从 6 亩 m 到 199 亩 m 的优先的奥氏体谷物尺寸的 tempered 17CrNiMo6 钢被光金属组织学( OM )描绘了,与各种各样的优先的奥氏体谷物尺寸扫描电子显微镜学( SEM )和传动电子显微镜学( TEM ) .Theyield 强度和钢的坚韧被测试并且与微观结构特征相关。结果证明在 17CrNiMo6 钢的优先的奥氏体谷物尺寸和马氏体的包尺寸与收益强度跟随一种 Hall-Petch 关系。当优先的奥氏体谷物尺寸从 199 亩 m 被精制到 6 亩 m 时,收益强度由 235 MPa 增加了,当在 77 K 的 Charpy U槽口冲击能多于 8times 改善了时,显示那微观结构精炼在比在增加强度改进抵抗到劈开骨折是更有效的。破裂表面暗示为劈开骨折的联合起来的裂缝路径作为是包被识别。 | Chunfang WANG Maoqiu WANG Jie SHI Weijun HUI Han DONG | 2007 | Journal of Materials Science & Technology2007，23，5： | 50 |
| 10 | Recent Advances in Synthesis of Waterborne Polyurethane and Their Application in Water-based Ink:A Review显示文摘Over the last few years,waterborne polyurethane(WPU) was applied to various fibers,adhesives,primers for metals,caulking materials,emulsion polymerization media,paint additives,defoamers,associate thickeners,pigment pastes,textile dyes and biomaterials,resulting in the increasing enthusiasm of researchers to design and synthesize novel WPU with unique properties.Thus,various processes and raw materials have been developed to prepare WPU.This review gives an overview on the developments of WPU mainly derived from novel polyols,analyzes the potential application in water-based inks and presents the probable future research area about water-based inks.Notably,the poly(ε-caprolactone) and poly(lactic acid) are the versatile materials used in WPU synthesis and supply the potential special performance for preparing WPU.Meanwhile,addition-fragmentation chain transfer(RAFT) polymerization and atom transfer radical polymerization(ATRP) processes provide an opportunity to control the chain sequence of WPU and obtain products with the desired performance. | Xing Zhou Yan Li Changqing Fang Shujuan Li Youliang Cheng Wanqing Lei Xiangjie Meng | 2015 | Journal of Materials Science & Technology2015，31，7： | 47 |
| 11 | Anaerobic microbiologically influenced corrosion mechanisms interpreted using bioenergetics and bioelectrochemistry: A review显示文摘Microbiologically influenced corrosion(MIC) is a major cause of corrosion damages, facility failures, and financial losses, making MIC an important research topic. Due to complex microbiological activities and a lack of deep understanding of the interactions between biofilms and metal surfaces, MIC occurrences and mechanisms are difficult to predict and interpret. Many theories and mechanisms have been proposed to explain MIC. In this review, the mechanisms of MIC are discussed using bioenergetics, microbial respiration types, and biofilm extracellular electron transfer(EET). Two main MIC types, namely EET-MIC and metabolite MIC(M-MIC), are discussed. This brief review provides a state of the art insight into MIC mechanisms and it helps the diagnosis and prediction of occurrences of MIC under anaerobic conditions in the oil and gas industry. | Yingchao Li Dake Xu Changfeng Chen Xiaogang Li Ru Jia Dawei Zhang Wolfgang Sand Fuhui Wang Tingyue Cu | 2018 | Journal of Materials Science & Technology2018，34，10： | 43 |
| 12 | Progress in additive manufacturing on new materials: A review显示文摘Recent efforts and advances in additive manufacturing(AM) on different types of new materials are presented and reviewed. Special attention is paid to the material design of cladding layers, the choice of feedstock materials, the metallurgical behavior and synthesis principle during the AM process, and the resulted microstructures and properties, as well as the relationship between these factors. Thereafter,the trend of development in the future is forecasted, including: Effects of the particles size and size distribution of powders; Approaches for producing fine microstructures; Opportunities for creating new materials by AM; Wide applications in reconditioning of damaged components; Challenges for deep understanding and applications of the AMed new materials. The idea of 'Develop Materials' or 'Create Materials' by AM is highlighted, but a series of scientific, technological and engineering problems remain to be solved in future. | Neng Li Shuai Huang Guodong Zhang Renyao Qin Wei Liu Huaping Xiong Gongqi Shi Jon Blackburn | 2019 | Journal of Materials Science & Technology2019，35，2： | 47 |
| 13 | Effect of Ultrasonic Output Power on Refining the Crystal Structures of Ingots and Its Experimental Simulation显示文摘In this study, a series of tests were conducted by using aluminum-based alloy to determine the formation of grain refining structure based on the ultrasonic vibration (UV). Furthermore, the simulation test and effect of ultrasonic output power were studied using ammonium chloride. Finally, the mechanism of grain refinement was investigated.The results show that: (1) By applying the UV to aluminum-base alloy, the grain refining rate of ingots tended to increase with the increase of the output value of UV. (2) It was confirmed that time from after the pour to the beginning of crystallization as well as cloudiness tended to decrease with increasing the ultrasonic power value of UV. Moreover, it can be seen from each cooling curve that a uniform temperature gradient existed in the melt as the power of UV increased, that made the melt strongly stirred. (3) It was also considered that the grain refining effect of ingots, which was observed from the simulation tests, resulted from nucleation action and stirring division action by applying the UV. | dunwenLI TadashiMOMONO | 2005 | Journal of Materials Science & Technology2005，21，1： | 40 |
| 14 | Microstructure and Fracture Behavior of 316L Austenitic Stainless Steel Produced by Selective Laser Melting显示文摘Selective laser melting is an additive manufacturing method based on local melting of a metal powder bed by a high power laser beam. Fast laser scans are responsible for severe thermal gradients and high cooling rates which produce complex hydrodynamic fluid flow. These phenomena affect crystal growth and orientation and are believed to be the cause of material spattering and microstructural defects, e.g.pores and incompletely melted particles. In this work, the microstructure and texture of 316 L bars built along two different orientations and the effect of different distribution of defects on their mechanical response and failure mechanisms were investigated. Partially molten powder particles are believed to be responsible for the scattering in elongation to failure, reduced strength, and premature failure of vertical samples. | R.Casati J.Lemke M.Vedani | 2016 | Journal of Materials Science & Technology2016，32，8： | 37 |
| 15 | What is going on in magnesium alloys?显示文摘China has been developed into one of the most active regions in terms of both fundamental and applied research on magnesium(Mg) and its alloys in the world from a solid base laid by its prominent metallurgist and materials scientists over the past decades. Nowadays, a large number of young-generation researchers have been inspired by their predecessors and become the key participants in the fields of Mg alloys, which consequently led to the establishment of China Youth Scholar Society for Magnesium Alloys Research in 2015. Since then, the first two China Youth Scholars Symposiums on Mg Alloys Research had been held at Harbin(2015) and Chongqing(2016) China, respectively. A number of crucial research interests related to fundamental and applied Mg research were discussed at the conferences and summarized in this short perspective, aiming to boost far-reaching initiatives for development of new Mg-based materials to satisfy the requirements for a broad range of industrial employments. Herein, four main aspects are included as follows: i) Plastic deformation mechanism and strengthening strategy, ii) Design and development of new Mg-based materials, iii) Key service properties, and iv) New processing technologies. | X.J. Wang D.K. Xu R.Z. Wu X.B. Chen Q.M. Peng L. Jin Y.C. Xin Z.Q. Zhang Y. Liu X.H. Chen G. Chen K.K. Deng H.Y. Wang | 2018 | Journal of Materials Science & Technology2018，34，2： | 35 |
| 16 | Hall-Petch relationship in Mg alloys: A review显示文摘Grain refinement could effectively enhance yield strength of Mg alloys according to the well-known Hall-Petch theory. For decades, many studies have been devoted to the factors influencing the HallPetch slope(k) in Mg alloys. Understanding the factors influencing k and their mechanisms could offer guidance to design and produce high-strength Mg alloys through effective grain refinement hardening. A review and comments of the past work on the factors influencing k in Mg alloys are presented. Results of these previous investigations demonstrate that the value of k in Mg alloys varies with texture, grain size,temperature and stain. The influence of texture and grain size on k is found to be an essential result of the variation of deformation mode on k value. Without the variation of deformation modes, it is revealed that texture could also impose a significant effect on k and this is also summarized and discussed in this paper. The reason for texture effect on k is analyzed based on the mechanism of Hall-Petch relationship.In addition, it is found in face-centered cubic(fcc) or body-centered cubic(bcc) metals that boundary parameters(boundary coherence, boundary energy and boundary diffusivity) could strengthen twinning or slips to a different extent. Therefore, the role of boundary parameters is also extended into the k values in Mg alloys and discussed in this paper. In the end, we discuss the future research perspective of Hall-Petch relationship in Mg alloys. | Huihui Yu Yunchang Xin Maoyin Wang Qing Liu | 2018 | Journal of Materials Science & Technology2018，34，2： | 35 |
| 17 | Solid-state additive manufacturing and repairing by cold spraying:A review显示文摘High-performance metal additive manufacturing(AM) has been extensively investigated in recent year because of its unique advantages over traditional manufacturing processes. AM has been applied to form complex components of Ti, Fe or Ni alloys. However, for other nonferrous alloys such as Al alloys, Mg alloys and Cu alloys, AM may not be appropriate because of its melting nature during processing by laser electron beam, and/or arc. Cold spraying(CS) has been widely accepted as a promising solid-state coating technique in last decade for its mass production of high-quality metals and alloys, and/or metal matrix composites coatings. It is now recognized as a useful and powerful tool for AM, but the related research work has just started. This review summarized the literature on the state-of-the-art and problems for C as an AM and repairing technique. | Wenya Li Kang Yang Shuo Yin Xiawei Yang Yaxin Xu Rocco Lupoi | 2018 | Journal of Materials Science & Technology2018，34，3： | 35 |
| 18 | Layered Machinable and Electrically Conductive Ti_2AlC and Ti_3AlC_2 Ceramics:a Review显示文摘Ti2AlC and Ti3AlC2 are the most light-weight and oxidation resistant layered ternary carbides belonging to the MAX phases.This review highlights recent achievements on the processing,microstructure,physical,mechanical and chemical properties of these two machinable and electrically conductive carbides.Ti2AlC and Ti3AlC2 display superior properties such as fracture toughness,electrical and thermal conductivities,and oxidation resistance over their binary counterpart.This paper provides a comprehensive overview of the processing-microstructure-property correlations of these two carbides.Potential fields of applications for Ti2AlC and Ti3AlC2 are surveyed.In addition,we point out methods for further improving their properties in some specific applications through appropriate structural design and modification. | X.H. Wang Y.C. Zhou | 2010 | Journal of Materials Science & Technology2010，26，5： | 34 |
| 19 | Microstructural Evolution and Mechanical Properties of Inconel 625 Alloy during Pulsed Plasma Arc Deposition Process显示文摘Pulsed plasma arc deposition(PPAD),which combines pulsed plasma cladding with rapid prototyping,is a promising technology for manufacturing near net shape components due to its superiority in cost and convenience of processing.In the present research,PPAD was successfully used to fabricate the Ni-based superalloy Inconel 625 components.The microstructures and mechanical properties of deposits were investigated by scanning electron microscopy(SEM),optical microscopy(OM),transmission electron microscopy(TEM) with energy dispersive spectrometer(EDS),microhardness and tensile testers.It was found that the as-deposited structure exhibited homogenous columnar dendrite structure,which grew epitaxially along the deposition direction.Moreover,some intermetallic phases such as Laves phase,minor MC(NbC, TiC) carbides and needle-likeδ-Ni_3Nb were observed in y-Ni matrix.Precipitation mechanism and distribution characteristics of these intermetallic phases in the as-deposited 625 alloy sample were analyzed.In order to evaluate the mechanical properties of the deposits,microhardness was measured at various location (including transverse plane and longitudinal plane).The results revealed hardness was in the range of 260—285 HV_(0.2).In particular,microhardness at the interface region between two adjacent deposited layers was slightly higher than that at other regions due to highly refined structure and the disperse distribution of Laves particles.Finally,the influence of precipitation phases and fabrication strategies on the tensile properties of the as-deposited samples was investigated.The failure modes of the tensile specimens were analyzed with fractography. | Fujia Xu Yaohui Lv Yuxin Liu Fengyuan Shu Peng He Binshi Xu | 2013 | Journal of Materials Science & Technology2013，29，5： | 33 |
| 20 | Recent progress in medium-Mn steels made with new designing strategies, a review显示文摘After summarizing the relevant researches on the medium Mn steels in references, two new targets on the tensile properties have been defined. One is that both transformation-induced(TRIP) and twinninginduced plasticity(TWIP) could be realized for the steel with a relatively low Mn content, which exhibits the similar tensile properties to the classical TWIP steels with higher Mn content. The other is to achieve ultrahigh ultimate tensile strength(>1.5 GPa) without sacrificing formability. To achieve these goals,new designing strategies was put forward for compositions and the processing route. In particular, warm rolling was employed instead of the usual hot/cold rolling process because the former can produce a mixture of retained austenite grains with different morphologies and sizes via the partial recrystallization. Consequently, the retained austenite grains have a wide range of mechanic stability so that they can transform to martensite gradually during deformation, leading to enhanced TRIP effect and then improved mechanic properties. Finally, it is succeeded in manufacturing these targeted medium Mn steels in laboratory, some of them even exhibit better tensile properties than our expectation. | Bin Hu Haiwen Luo Feng Yang Han Dong | 2017 | Journal of Materials Science & Technology2017，33，12： | 31 |
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