云南高校图书馆联盟文献共享服务平台- 国家自然科学基金(50875217)

国家自然科学基金(50875217): 作品数：19被引量：29H指数：3; 导出分析报告; 相关作者：陈铮王永欣杨坤张明义董卫平更多>>; 相关机构：西北工业大学中国商用飞机有限责任公司北京民用飞机技术研究中心西北有色金属研究院更多>>; 相关期刊：《Journal of Wuhan University of Technology(Materials Science)》《材料热处理学报》《Science Bulletin》《热加工工艺》更多>>; 相关主题：MICROSCOPIC_PHASE-FIELDL1微观相场MICROSCOPICALLOY更多>>; 相关领域：金属学及工艺一般工业技术理学电气工程更多>>

On ferroelectric domain polarization switching mechanism subject to an external electric field by simulations with the phase-field method被引量：6: 《Science China(Technological Sciences)》2013年第5期1129-1138,共10页ZHOU GuangZhao WANG YongXin LIU Chong CHEN Zheng; supported by the National Natural Science Foundation of China(Grant Nos.51075335,51174168,10902086,and 50875217);the NPU Foundation for Fundamental Research(Grant No.JC201005); The ferroelectric domain formation(FDF) and polarization switching(FDPS) subjected to an external electric field are simulated using the phase-field(PF) method,and the FDPS mechanism under different external electric ...; 关键词：ferroelectric domain polarization switching external electric field phase-field method

Microscopic phase-field study on directional coarsening mechanism caused by interaction between precipitates in Ni-Al-V alloy被引量：4: 《Transactions of Nonferrous Metals Society of China》2013年第1期193-200,共8页杨坤陈铮王永欣范晓丽; Projects(51075335,10902086,50875217) supported by the National Natural Science Foundation of China;Project(JC201005) supported by the Northwestern Polytechnical University Foundation for Fundamental Research,China;Project(CX201007) supported by the Doctorate Foundation of Northwestern Polytechnical University,China; A microscopic phase-field model was used to investigate a directional coarsening mechanism caused by the anisotropic growth of long period stacking and different effects of phases on precipitation in Ni-Al-V alloy.The...; 关键词：nickel-based alloys microscopic phase-field simulation directional coarsening anisotropic growth MISMATCH diffusion

Ni_(75)Al_xV_(25-x)合金中反相畴界有序无序化的微观相场模拟被引量：2: 《材料热处理学报》2013年第1期163-169,共7页张明义杨坤陈铮王永欣张嘉振; 国家自然科学基金项目(50941020,10902086,50875217,20903075); 基于微观相场模型研究了Ni75AlxV25-x合金中L12-Ni3Al相间反相畴界和DO22-Ni3V相间反相畴界的有序无序化过程。结果表明,伴随着V的富集,Al和Ni的贫化,L12相间反相畴界(200)L//(200)L.1/2[001]L和(200)L//(200)L均发生有序无序化;DO22相...; 关键词：微观相场反相畴界有序无序化 Ni75AlxV25-x合金粗化

Phase-field crystal modeling of shape transition of strained islands in heteroepitaxy被引量：1: 《Science China(Physics,Mechanics & Astronomy)》2012年第11期2042-2048,共7页CHEN Cheng CHEN Zheng ZHANG Jing DU XiuJuan; supported by the National Natural Science Foundation of China (Grant Nos. 51075335,51174168,10902086 and 50875217);the Northwestern Polytechnical University Foundation for Fundamental Research (Grant Nos. 201109 and NPU-FFR-JC201005); The phase-field crystal(PFC) model is employed to study the shape transition of strained islands in heteroepitaxy on vicinal substrates.The influences of both substrate vicinal angles β and the lattice mismatch ξ ar...; 关键词：HETEROEPITAXY strained islands phase field crystal

Site occupation evolution of alloying elements in L1_2 phase during phase transformation in Ni_(75)Al_(7.5)V_(17.5): 《Transactions of Nonferrous Metals Society of China》2012年第10期2439-2443,共5页张明义刘富陈铮郭红军岳广全杨坤; Projects (50941020, 10902086, 50875217, 20903075) supported by the National Natural Science Foundation of China;Projects (SJ08-ZT05, SJ08-B14) supported by the Natural Science Foundation of Shaanxi Province, China; Correlation between site occupation evolution of alloying elements in L12 phase and growth of DO22 phase in Ni75Al7.5V17.5 was studied using microscopic phase field model. The results demonstrate that the growing proc...; 关键词：nickel based superalloys Ni75Al7.5V17.5 alloy phase transformation micro-phase field grain growth antisite defect

延髓海绵状血管畸形临床特征与预后相关因素分析: 《热加工工艺》2012年第6期52-56,共5页程立维王永欣陈铮孙朝远; 国家自然科学基金资助（51075335,50875217）; 目的探讨延髓海绵状血管畸形临床特征和预后相关因素。方法回顾性分析16例延髓海绵状血管畸形病人的临床资料,采用枕下后正中入路手术切除病灶,KPS评分对术前、术后及随访状况进行评估,统计分析影响呼吸、吞咽功能和预后KPS评分的相关...; 关键词：血管畸形中枢神经系统延髓血管外科手术预后

Microscopic phase-field study on order-disorder transition of the antiphase domain boundary formed between L1_2 phases: 《Science China(Technological Sciences)》2011年第12期3409-3414,共6页ZHANG MingYi YANG Kun CHEN Zhen WANG YongXin FAN XiaoLi; supported by the National Natural Science Foundation of China (Grant Nos. 50941020, 10902086, 50875217,and 20903075);the Natural Science Foundation of Shaanxi Province (Grant Nos.SJ08-ZT05 and SJ08-B14);the Doctorate Foundation of Northwest Polytechnical University (Grant No.CX200905); Kinetics of order-disorder transition at antiphase domain boundary （APDB） formed between L12 （Ni3A1） phases is investigated using microscopic phase-field model. The results demonstrate that whether order-disorder ...; 关键词：microscopic phase-field antiphase domain boundary order-disorder transition transient phase Ni-AI-V alloy

Phase field simulation of interatomic potentials for double phase competition during early stage precipitation: 《Chinese Science Bulletin》2011年第19期2055-2060,共6页DONG WeiPing WANG YongXin YANG Kun CHEN Zheng LU YanLi; supported by the National Natural Science Foundation of China (10902086, 51075335 and 50875217);the Basic Research Fund of the Northwestern Polytechnical University (JC201005);the Doctoral Foundation of Northwestern Polytechnical University; Phase field model was employed to study the variations of interatomic potentials of Ni 3 Al (L1 2 phase) and Ni 3 V (DO 22 phase) as a function of temperature and concentration. The long-range order (LRO) parameter re...; 关键词：原子间沉淀场模拟竞争反演方程 NI3AL 相场模型长程有序

Ageing process of pre-precipitation phase in Ni_(0.75)Al_(0.05)Fe_(0.2) alloy based on phase field method被引量：4: 《Transactions of Nonferrous Metals Society of China》2011年第5期1105-1111,共7页董卫平王永欣陈铮杨坤; Projects(10902086, 50941020, 50875217) supported by the National Natural Science Foundation of China; Projects(JC201005) supported by Basic Research Fund of Northwestern Polytechnical University, China; Project supported by Graduate Starting Seed Fund and Doctoral Foundation of Northwestern Polytechnical University, China; By utilizing phase field method combined with analysis on free energy and interatomic potentials, pre-precipitation phase formation and transformation process of Ni0.75Al0.05Fe0.2 alloy in early precipitation stage du...; 关键词：pre-precipitation phase equilibrium phase interatomic potentials free energy phase field method

Energy studies of precipitation sequence in Ni_(75)Al_(10)Cr_(15) alloy based on the phase field theory: 《Science China(Physics,Mechanics & Astronomy)》2011年第5期821-826,共6页DONG WeiPing CHEN Zheng WANG YongXin; supported by the National Natural Science Foundation of China (Grant Nos. 10902086, 51075335 and 50875217);the Basic Re-search Fund of the Northwestern Polytechnical University (Grant No. JC201005);the Doctoral Foundation of Northwestern Polytechnical University (Grant No. CX201103); Based on the phase field theory, the phase precipitation sequence of Ni75A110Cr15 alloy and the free energy of each phase were studied. Moreover, the interatomic potentials of Llo phase, L12 phase and DO22 phase chang...; 关键词：precipitation sequence pre-precipitation phase equilibrium phase interatomic potentials free energy phase field theory

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