|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Intermetallic Compounds in the Banded Structure and Their Effect on Mechanical Properties of Al/Mg Dissimilar Friction Stir Welding Joints显示文摘Dissimilar friction stir welding(FSW) between aluminum and magnesium alloy was performed, using various tool rotational speed(TRS) at a ?xed travel speed, with tool offset to aluminum to investigate the formation of intermetallic compounds(IMCs) in the banded structure(BS) zone and their effect on mechanical properties. Large quantities of IMCs, in the form of alternating bands of particles or lamellae, were found in the BS zone, where drastic material intermixing occurred during FSW. The BS microstructural characters in terms of the morphology of the bands and the quantity and distribution of IMC particles varied with TRS. All welds exhibited brittle fracture mode with their fracture paths propagating mainly in/along the IMCs in the BS. It is shown that these BS microstructural characters have signi?cant effect on the mechanical properties of the joints. Suggestions on tailoring the BS microstructure were proposed for improving the strength of the BS zone and the ?nal mechanical properties of the Al/Mg FSW joints. | Hui Shi Ke Chen Zhiyuan Liang Fengbo Dong Taiwu Yu Xianping Dong Lanting Zhang Aidang Shan | 2017 | Journal of Materials Science & Technology2017，33，4： | 8 |
| 2 | Improvement of magnetic properties and corrosion resistance of NdFeB magnets by intergranular addition of MgO显示文摘 | Mo Wenjian Zhang Lanting Shan Aidang | 2008 | Journal of Alloys and Compounds2008，461，： | 1 |
| 3 | Microstructures and mechanical properties of commercial purity iron processed by asymmetric rolling显示文摘 | Yi Ding Jianhua Jiang Aidang Shan | 2009 | Materials Science and Engineering:A2009，520，12： | 1 |
| 4 | The effect of lamellar structure in Mo5Si3-MoSi2 alloy refined by annealing on the Vickers hardness at room temperature显示文摘 | Yang Haibo Li Wei Shan Aidang Wu Jiansheng | 2005 | Journal of Alloys and Compounds2005，392，： | 1 |
| 5 | Effect of Mg addition on the microstructure and mechanical properties of MoSi2 alloys显示文摘 | AIDANG S WEI F HITOSHI H | 2002 | Scripta Materialia2002，46，： | 1 |
| 6 | Dependence of the crystal structure of the Nd-rich phase on oxygen content in an Nd–Fe–B sintered magnet显示文摘 | Wenjian Mo Lanting Zhang Qiongzhen Liu Aidang Shan Jiansheng Wu Matahiro Komuro | 2008 | Scripta Materialia2008，，2： | 1 |
| 7 | Microstructure and magnetic properties of NdFeB magnet prepared by spark plasma sintering显示文摘 | Wenjian Mo Lanting Zhang Aidang Shan Lijun Cao Jiansheng Wu Matahiro Komuro | 2007 | Intermetallics2007，，11： | 1 |
| 8 | High strength-ductility nano-structured high manganese steel produced by cryogenic asymmetry-rolling显示文摘A bulk nanostructured twinning-induced plasticity(TWIP) steel with high ductility and high strength was fabricated by cryogenic asymmetry-rolling(cryo-ASR) and subsequent recovery treatment. It was found that the cryo-ASRed TWIP steels exhibit simultaneous improvements in the ductility, strength and work hardening. Typical microstructures of the cryo-ASR TWIP steel were characterized by shear bands and intensive mechanical nano-sized twins induced by cryogenic deformation. These mechanical nano-scale twins remain thermally stable during the subsequent recovery treatment. It is believed that the ductility enhancement and high work-hardening ability for the cryo-ASR TWIP steels should be mainly attributed to the high-density pre-existing nano-scale twins. | Bin Fu Liming Fu Shichang Liu Huan Rong Wang Wei Wang Aidang Shan | 2018 | Journal of Materials Science & Technology2018，34，4： | 1 |
| 9 | Principals of indirect equal channel angular drawing for processing of ultra-fine grained materials显示文摘 | AIDANG Shan JONG-woo Park and IN-Ge Moon | 2006 | Material Science Forum2006，，： | 1 |
| 10 | Direct observation of shear deformation during equal channel angular pressing of pure aluminum显示文摘 | AIDANG Shan IN-Ge Moon HUNG-Suk Ko | 1999 | Scripta Materialia1999，41，： | 1 |
| 11 | Intermetallics显示文摘 | Mo Wenjian Zhang Lanting Shan Aidang | 2007 | 15:14832007，15，： | 1 |
| 12 | Effect of strain rate on the tensile behavior of ultra-fine grained pure aluminum显示文摘 | WANG Mingliang SHAN Aidang | 2008 | Journal of Alloys and Compounds2008，455，12： | 1 |
| 13 | Effect of annealing on the microstructures and Vickers hardness at room temperature of intermetallics in Mo-Si system显示文摘The microstructures and Vickers hardness at room temperature of arc-melting processed intermetallics of Mo5Si3-MoSi2 hypoeutectic alloy and hypereutectic alloy annealed at 1200℃ for different time were investigated. Lamellar structure consisted of Mo5Si3 (D8m) phase and MoSi2 (C11b) phase was observed in all the alloys. For Mo5Si3-MoSi2 hypoeutectic alloy, the lamellar structure was found only after annealing and developed well with fine spacing on the order of hundred nanometers after annealing at 1200℃ for 48 h. But when the annealing time was up to 96 h, the well-developed lamellar structure was destroyed. For Mo5Si3-MoSi2 hypereutectic alloy, the lamellar structure was found both before and after annealing. However the volume fraction and spacing of the lamellar structure did not change significantly before and after annealing. The effects of the formation, development and destruction of lamellar structure on Vickers hardness of alloys were also investigated. When Mo5Si3-MoSi2 hypoeutectic alloy annealed at 1200℃ for 48 h, the Vickers hardness was improved about 19% compared with that without annealing and formation of lamellar structure. The highest Vickers hardness of Mo5Si3-MoSi2 hypereutectic was increasing about 18% when annealing at 1200℃ for 48 h. | YANG Haibo LI Wei SHAN Aidang WU Jiansheng Key Laboratory of Ministry of Education for High Temperature Materials and Tests & Department of Material Science and Engieering, Shanghai Jiao Tong University, Shanghai 200030, China | 2004 | Rare Metals2004，23，2： | 1 |
| 14 | Development and study of high-strength low-Mo fire-resistant steel显示文摘 | Rongchun Wan Feng Sun Lanting Zhang Aidang Shan | 2011 | Materials and Design2011，，： | 1 |
| 15 | Unveiling the precipitation behavior and mechanical properties of Co-free Ni_(47-x)Fe_(30)Cr_(12)Mn_(8)Al_(x)Ti_(3) high-entropy alloys显示文摘Precipitate hardening is considered as an effective method to strengthen High-and medium-entropy alloys(HEAs and MEAs),especially the recently developed Co-free HEAs/MEAs,In this work,a systematic study on precipitation and mechanical behaviors of a Co-free HEAs with dilute amount of Al addition,Ni_(47-x)Fe_(30 C)r_(12)Mn_(8) Al_(x)Ti_(3)(x=2 at.%,5 at.% and 7 at.%),is presented.Results shown that the Ni_(45)Fe_(30)Cr_(12)Mn_(8) Al_(2) Ti_(3) has a face-centered cubic(FCC)+L1_(2)+η three-phased structure.With increasing Al content,the formation of η phase is inhibited,accompanying with an enhanced formation of B2 phase,and FCC+L1_(2)+B2 three-phased structure is thus observed in alloys with x=5 and 7.The constrained lattice mismatch between FCC matrix and L1_(2) precipitates is decreased with increasing Al content,leading to an enhanced precipitation behavior of L1_(2) phase.As a result of microstructural evolution,the mechanical properties of the aged HEAs changed:the Ni_(42)Fe_(30)Cr_(12)Mn_(8) Al_5 Ti_(3) alloy exhibits a better combination of a yield strength of 661 MPa and tensile ductility of 29.7% as compared to the 2 at.% Al alloyed HEA;and addition of Al beyond 5 at.% results in an increase of strength with a large expense of ductility.We believe that the present work is helpful for developing high-performance Co-free HEAs/MEAs strengthened by nanoprecipitates via composition optimizing. | Jiantao Fan Liming Fu Yanle Sun Feng Xu Yi Ding Mao Wen Aidang Shan | 2022 | Journal of Materials Science & Technology2022，，23： | 0 |
| 16 | Achieving Fine-Grained Microstructure and Superior Mechanical Property in a Plain Low-Carbon Steel Using Heavy Cold Rolling Combined with Short-Time Heat Treatment显示文摘A new thermomechanical process consisting of heavy cold rolling(HCR)and short-time heat treatment(STH)is developed to fabricate fine-grained martensite microstructure in a low-cost plain low-carbon steel.To achieve the optimal mechanical properties after STH,three different ferrite-pearlite(F-P)dual-phase microstructures are prepared via hot rolling(HR),HR and austenitizing,and HR and HCR.The microstructure evolution and the comprehensive mechanical properties of the alloy during STH are then investigated.We find that the volume fractions of transformed martensite after STH increase with decreasing grain sizes of the pre-STH F-P dual phases.The rapid heating and short-time holding of STH promote grain nucleation and inhibit grain growth,resulting in microstructure refinement.The formation of martensites with different morphologies and different carbon concentrations in the HR and HCR+STH alloy is identified,owing to the inhomogeneous carbon distribution by STH.Tensile experiments demonstrate that STH greatly improves the comprehension mechanical properties of the alloy.Excellent mechanical properties,with a yield strength of 1224 MPa,a tensile strength of 1583 MPa,a uniform elongation of 4.0%and a total elongation of 7.3%are achieved in the HR and HCR+STH alloy.These excellent mechanical properties are principally attributed to the microstructure refinement and martensite formation induced by STH,with a yield strength improvement of 134%and a tensile strength improvement of 150%relative to the HR alloy. | Yuxuan Liu Shichang Liu Liming Fu Huanrong Wang Wei Wang Mao Wen Aidang Shan | 2023 | Acta Metallurgica Sinica(English Letters)2023，36，10： | 0 |
| 17 | Granular Carbides-Assisted Ultrafine-Ferrite Fabrication in the Pearlitic Steel Without Severe Plastic Deformation and Annealing显示文摘The evolution of ferrite grain and cementite lamella during cold rolling in a granular carbide–pearlite steel has been investigated.Particular attention has been given to a quantitative characterization of changes in the ferrite grains.Electron backscattered diff raction and transmission electron microscopy observations show that the ultrafi ne ferrite(~388 nm)can be produced through low equivalent strain cold rolling without severe plastic deformation(SPD)and annealing.The average grain size of ferrite depends on the volume fraction,shape and distribution of granular carbides as well as interlamellar spacing of pearlite.A general explanation of granular carbides-assisted grain refi nement is that the embedded carbides between natural barrier will signifi cantly facilitate dislocation nucleation during cold rolling.Dislocation reaction occurs more drastically and quickly near these granular carbides.Such reactions promote the formation of high-angle grain boundaries.The formation of ultrafi ne ferrite grains and subgrains in steel after cold rolling toε=1.4 strain makes the strength and ductility increased simultaneously compared withε=0.6 cold-rolled steel.The results suggest a new material design strategy to obtain ultrafi ne-grained structure via the granular carbides assistance. | Han Zheng Liming Fu Xinbo Ji Ziyong Li Yanle Sun Sixin Zhao Wei Wang Aidang Shan | 2020 | Acta Metallurgica Sinica(English Letters)2020，33，12： | 0 |
| 18 | SUPERPLASTICITY IN LARGE-GRAINED Fe_3Al ALLOYS显示文摘SUPERPLASTICITYINLARGE-GRAINEDFe_3AlALLOYSLINDongliang(T.L.Lin),(SHANAidang,CHENMingweiShanghaiJiaotongUniversity,Shanghai200?.. | LIN Dongliang(T. L. Lin),(SHAN Aidang, CHEN Mingwei Shanghai Jiaotong University, Shanghai 200030, China) | 1995 | Acta Metallurgica Sinica(English Letters)1995，8，Z1： | 0 |
| 19 | Strengthening of Ultrafine Lamellar-Structured Martensite Steel via Tempering-Induced Nanoprecipitation显示文摘An ultrafine lamellar-structured martensite steel fabricated by heavy warm rolling(HWR)has shown an excellent combination of strength and ductility.By appending tempering at 400℃to HWR,we show that the comprehensive mechanical property of a lamellar-structured low-carbon martensite steel can be further improved to reach a yield strength of~1.8 GPa,an ultimate tensile strength of~2.0 GPa and a total elongation of~9.3%.This is achieved by tempering the HWR steel from 300 to 750℃,and the optimum tempering temperature is thus obtained.We find that the tempered ultrafine lamellar martensite contains high-density nanoprecipitates dispersed within the aligned martensite laths with reduced crystallographic variations.The ultrahigh strength of the steel is rationalized as mainly the result of grain boundary strengthening and precipitation strengthening,which contribute to yield stress by 610 MPa and 440 MPa,respectively.The good ductility is believed to be closely related to the capacity of the tempered grains to accommodate dense dislocations upon plastic deformation.The present thermomechanical processing provides a feasible routine for producing steels with ultrahigh-strength and good-ductility. | Xinbo Ji Liming Fu Han Zheng Jian Wang Hengchang Lu Wei Wang Mao Wen Han Dong Aidang Shan | 2022 | Acta Metallurgica Sinica(English Letters)2022，35，11： | 0 |
| 20 | Oxidation kinetics and high temperature in-situ observation of the oxidation behaviour of NbSi_2 at 1023 K显示文摘By using high temperature optical microscopy, oxidation behaviors of poly- and single crystalline NbSi2 were observed in-situ at 1023 K. The effects of micro-cracks, porosity and grain boundary on the oxidation behavior of NbSi2 have been studied. The results indicate that new cracks initiate and extend from the pre-existing cracking areas in the arc-melted poly-crystalline specimen, leading to fragmentation after 220 min at 1023 K. However, although pores and grain boundary are the preferential oxidation site, they do not directly lead to fragmentation during oxidation, indicating that the pre-existing cracks in specimen are the key reason to pesting. The oxidation kinetics of the studied NbSi2 specimens corresponds well with the in-situ observation. | ZHANG Fang ZHANG Lanting SHAN Aidang WU Jiansheng | 2006 | Science China(Technological Sciences)2006，49，2： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员