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| 1 | Microstructure and Lattice Parameters of AIN Particle-Reinforced Magnesium Matrix Composites Fabricated by Powder Metallurgy显示文摘Magnesium matrix composites reinforced with A1N particles were fabricated by the powder metallurgy technique.The evolution of lattice constants and solid solubility levels of Al in a-Mg and the microstructure of Mg-Al/AIN composites were investigated in the present study.The results showed that the solid solubility of Al in ot-Mg reached a relatively high level by the P/M process with a long time of milling.X-ray diffraction showed that the peaks of Mg phase clearly shifted to higher angles.The lattice constants and cell volume decreased significantly compared with those of standard Mg due to a significant amount of Al incorporated into a-Mg in the form of substitutional solid solution.The degree of lattice deformation decreased at a low sintering temperature and increased at higher sintering temperatures due to the presence of A1N.Microstructural characterization of the composites revealed a necklace distribution of A1N particles in the Mg matrix.Heat treatment led to precipitation of Mg_(17)Al_(12) from the supersaturated a-Mg solid solution.The precipitate exhibited granular and lath-shaped morphologies in Mg matrix and flocculent precipitation around A1 N particles. | Jie Chen Chong-Gao Bao Yong Wang Jin-Ling Liu Challapalli Suryanarayana | 2015 | Acta Metallurgica Sinica(English Letters)2015，28，11： | 4 |
| 2 | Mechanical Alloying: A Novel Technique to Synthesize Advanced Materials显示文摘Mechanical alloying is a solid-state powder processing technique that involves repeated cold welding,fracturing,and rewelding of powder particles in a high-energy ball mill.Originally developed about 50 years ago to produce oxide-dispersion-strengthened Ni-and Fe-based superalloys for aerospace and high temperature applications,it is now recognized as an important technique to synthesize metastable and advanced materials with a high potential for widespread applications.Te metastable materials produced include supersaturated solid solutions,intermediate phases,quasicrystalline phases,amorphous alloys,and high-entropy alloys.Additionally,nanocrystalline phases have been produced in virtually every alloy system.Because of the fneness of the powders,their consolidation to full density without any porosity being present is a challenging problem.Several novel methods have been developed to overcome this issue.Powder contamination during milling and subsequent consolidation constitutes another issue;this can be resolved,though expensive.A number of applications have been developed for these novel materials.Tis review article presents an overview of the process of mechanical alloying,mechanism of grain refnement to nanometer levels,and preparation of materials such as nanocomposites and metallic glasses.Te application of mechanical alloying to synthesize some advanced materials such as pure metals and alloys,hydrogen storage materials,and energy materials is described.Te article concludes with an outlook on future prospects of this technique. | Challapalli Suryanarayana | 2019 | Research2019，，1： | 2 |
| 3 | Relationship of heart rate variability to parasym pathetic effect显示文摘 | GOLDBERGER J J CHALLAPALLI S TUNG R | 2001 | Circulation2001，103，15： | 1 |
| 4 | Use of choline PET-CT as a noninvasive method for detecting pelviclymph node status from prostate cancer and relationship withcholine kinase expression显示文摘 | Contractor K Challapalli A Barwick T | 2011 | Clin Cancer Kes2011，17，24： | 1 |
| 5 | Systemic administration of local anesthetics to relieve ncuropathic pain:a systematic review and meta-analysis显示文摘 | Tremont Lukats IW Vidya Challapalli Ewan D | | 0，，06： | 1 |
| 6 | Hierarchical microstructures and strengthening mechanisms of nano-TiC reinforced CoCrFeMnNi high-entropy alloy composites prepared by laser powder bed fusion显示文摘High entropy alloys(HEAs)have recently received extensive attention due to their appealing mechani-cal performance given their simple phase formation.This study utilized laser powder bed fusion(LPBF)to fabricate high-performance HEA components.By processing respective powder blends,LPBF enabled the fabrication of stronger composites with a uniformly distributed reinforcing phase.Here,the impact of varying content of nano-scale TiC(1-3 wt%)particles for strengthening the CoCrFeMnNi HEA was ex-plored.The microstructural features and mechanical properties of the HEA composites were investigated in detail.The introduction of nano-scale TiC into the HEA matrix encouraged the development of cross-scale hierarchical microstructure and eliminated the formation of oxide inclusions.Incorporating more nano-TiC led to a higher dislocation density and more refined microstructure in the HEA composites,whereas it posed little influence on the anisotropy of the HEA matrix which typically featured a<001>texture along the building direction.With an optimized content of nano-TiC(1-2 wt%),the strength-ductility trade-offcan be overcome by exploiting multiple strengthening mechanisms encompassing grain boundary strengthening,solid solution strengthening,Orowan strengthening,and dislocation strengthen-ing.The HEA composites showed a favored strength-ductility combination with a yield strength of 748-882 MPa,ultimate tensile strength of 931-1081 MPa,and fracture elongation of 23%-29%.This study demonstrates that the introduction of nano-scale TiC is an effective way to simultaneously improve the strength and ductility of additively manufactured HEA materials. | Hongyu Chen Konrad Kosiba Tiwen Lu Ning Yao Yang Liu Yonggang Wang Konda Gokuldoss Prashanth Challapalli Suryanarayana | 2023 | Journal of Materials Science & Technology2023，，5： | 1 |
| 7 | Cefuroxime-induced immune hemolysis 显示文摘 | MaUoy C A Kiss J E Challapalli M | 2003 | J Pediatr2003，143，1： | 1 |
| 8 | Systemic administration of local anesthetics to relieve neu- ropathic pain: a systematic review and meta-analysis 显示文摘 | Tremont-Lukats IW Challapalli V McNicol ED | 2005 | Anesth Analg2005，101，6： | 1 |
| 9 | Imaging apoptosis with positron emission tomography: ‘Bench to bedside’ development of the caspase-3/7 specific radiotracer [ 18 F]ICMT-11显示文摘 | Quang-Dé Nguyen Amarnath Challapalli Graham Smith Robin Fortt Eric O. Aboagye | 2011 | European Journal of Cancer2011，，： | 1 |
| 10 | System- ic administration of local anesthetics to relieve neuropathic pain: a systematic review and meta-analysis 显示文摘 | Tremont-Lukats IW Challapalli V McNicol ED | 2005 | Anesth Analg2005，101，6： | 1 |
| 11 | Systemic administration of local anesthetic agents to relieve neuropathic pain显示文摘 | Challapalli V Tremont-Lukats I W McNicol E D | 2005 | Cochrane Database Syst Rev2005，，00： | 1 |
| 12 | Differential effects of parasympathetic blockade and parasympathetic withdrawal on heart rate variability显示文摘 | Challapalli S Kadish AH Horvath G | 1999 | J Cardiosc Electrophysiol1999，10，： | 1 |
| 13 | Relationship of heart rate variabihty to parasympathetic effect 显示文摘 | Goldberger J J Challapalli S Tung R | 2001 | Circulation2001，103，： | 1 |
| 14 | 18F-ICMT-11, a cas-pase-3-specific PET tracer for apoptosis- biodistribution and radiation dosimetry显示文摘 | Challapalli A Kenny LM Hallett WA | 2013 | J Nuel Med2013，54，9： | 1 |
| 15 | Antagonism of the histamine H 4 receptor reduces LPS-induced TNF production in vivo显示文摘 | Jeffery M. Cowden Fuqu Yu Mamatha Challapalli Jing-Feng Huang Sunhwa Kim Wai-Ping Fung-Leung Jing Ying Ma Jason P. Riley Mai Zhang Paul J. Dunford Robin L. Thurmond | 2013 | Inflammation Research2013，，6： | 1 |
| 16 | Bulushev, Lioubov Kiwi- Minsker, Dynamic behavlour of activated carbon catalysts during ozone decomposition at room temperature显示文摘 | Challapalli Subrahmanyam Dmitri A | 2005 | Applied Catalysis B:Environmental2005，61，： | 1 |
| 17 | Congestive heart failure due to reversible cardiomyopathy in patients with hyperthyroidism显示文摘 | Umpierrez GE Challapalli Patterson C | 1995 | Am Med Sci1995，310，3： | 1 |
| 18 | Exploring the potential of choline-PET/CT as a novel imaging biomarker for predicting early treatment response in prostate cancer 显示文摘 | CHALLAPALLI A BARWICK T TOMASI G | 2014 | Nucl Med Commun2014，35，1： | 1 |
| 19 | Differential effects of parasympathetic blockade and parasympathetic withdrawal on heart rate variability显示文摘 | Challapalli s Kadish A H Horvath G | 1999 | J Cardiosc Electrophysiol1999，10，： | 1 |
| 20 | Systemic administration of local anesthetics to relieve neuropathic pain: a systematic review and metaanalysis 显示文摘 | Tremont - Lukats IW Challapalli V McNicol ED | 2005 | Anesth Analg2005，101，6： | 1 |
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