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(50071046)

国家自然科学基金(50071046): 作品数：48被引量：104H指数：6; 导出分析报告; 相关作者：陈铮王永欣卢艳丽李永胜赵宇宏更多>>; 相关机构：西北工业大学清华大学青岛理工大学更多>>; 相关期刊：《Progress in Natural Science:Materials International》《热加工工艺》《稀有金属材料与工程》《自然科学进展》更多>>; 相关主题：计算机模拟微观相场模拟NIMICROSCOPIC铝锂合金更多>>; 相关领域：金属学及工艺一般工业技术自动化与计算机技术理学更多>>

Ni-Al-V合金DO_(22)相间有序畴界面的微观相场模拟被引量：2: 《稀有金属材料与工程》2009年第6期962-966,共5页张明义王永欣陈铮董卫平来庆波张利鹏; 国家自然科学基金项目(50071046);陕西省自然科学基金项目(2003E106)资助; 利用微观相场动力学模型模拟Ni-Al-V合金沉淀过程中DO22(Ni3V)相沿[100]和[001]方向形成的有序畴界面,对界面结构及其界面处合金元素的成分进行了研究。结果表明:DO22相沿[100]和[001]方向形成3种稳定界面,且都不可以迁移;界面性质与界...; 关键词：有序界面成分偏聚 DO22(Ni3V)相微观相场 Ni-Al-V合金

Ni_(75)Cr_(25-x)Al_x合金中L1_2相和D0_(22)相形核孕育期的微观相场模拟被引量：2: 《物理学报》2009年第F06期319-326,共8页卢艳丽陈铮来庆波张静; 国家自然科学基金(批准号:50071046;50875217);中国博士后科学基金(批准号:20070420218;200801437);陕西省自然科学基金(批准号:SJ08-ZT05)资助的课题~~; 基于微观相场动力学模型,运用原子图像、平均长程序参数和平均成分偏离序参数,研究了Al浓度对Ni75Cr25-xAlx合金中L12相和D022相形核孕育期的影响以及孕育期与沉淀相析出顺序之间的关系.结果表明,L12相和D022相的形核孕育期不仅与Al浓...; 关键词：形核孕育期序参数沉淀微观相场模拟

Microscopic phase-field simulation of Cr atom substitution character during formation of L1_2 and DO_22 phases in Ni-Cr-Al alloy被引量：1: 《Journal of Central South University of Technology》2008年第5期588-592,共5页褚忠陈铮石云霞卢艳丽王永欣; Project(50071046) supported by the National Natural Science Foundation of China; The simulations of Cr atom substitution character during the formation of L12 and DO22 phases in Ni-Cr-Al alloy were performed at 873 K based on microscopic phase-field model. It is found that the substitution of Cr i...; 关键词：Ni-Cr-Al alloy microscope phase-field precipitation SUBSTITUTION simulation

Ni-Cr-Al合金中D0_(22)相和L1_2相沉淀过程微观相场模拟被引量：2: 《稀有金属材料与工程》2007年第12期2099-2103,共5页卢艳丽陈铮王永欣李永胜褚忠; 国家自然科学基金资助项目(50071046);国家"863"资助项目(2002AA331051); 基于微观相场动力学模型和微观弹性理论,对Ni75Cr19Al6.0合金的沉淀过程进行了研究。结果表明,合金沉淀初期,D022相以失稳分解机制从无序基体中析出,L12相以非经典形核长大机制析出,两相均呈现不规则形状且随机分布。共格沉淀相和母相...; 关键词：Ni75cr19Al6.0合金沉淀弹性应变能微观相场模拟

Computer simulation for the effect of coherent strain on the precipitation progress of binary alloy: 《Journal of Harbin Institute of Technology(New Series)》2007年第5期634-640,共7页卢艳丽陈铮王永欣; Sponsored by the National Natural Science Foundation of China (Grant No.50071046);the National Hi-Tech Research and Development Program ofChina (Grant No.2002AA331051).; Based on the microscopic elasticity theory and microscopic diffusion equation, the precipitation progress of the binary alloys including coherent strain energy was studied. The results show that coherent strain has ob...; 关键词：binary alloy coherent strain precipitation progress computer simulation

Al-Li合金分级时效的微观相场模拟: 《稀有金属材料与工程》2007年第7期1229-1233,共5页徐国栋陈铮李永胜; 国家自然科学基金(50071046);国家高技术研究发展计划项目(2002AA331051)资助; 基于离散格点形式的微观相场动力学扩散方程,以Al-10at%Li合金为对象,对3种不同的时效工艺进行计算模拟。结果表明,对于该合金,采用137℃预时效+190℃终时效工艺比另2种时效工艺获得的组织更均匀,颗粒更细化、弥散度更高。Al-10at%Li合...; 关键词：AL-LI合金时效模拟形核机制

Simulation of the coarsening behavior of intermetallic precipitates in Ni_(75)Al_xV_(25-x) alloys被引量：1: 《Rare Metals》2007年第5期498-503,共6页LI Yongsheng CHEN Zheng WANG Yongxin LU Yanli ZHANG Jianjun; the National Natural Science Foundation of China (No. 50071046);the Hi-tech Research and Development Program of China (No. 2002AA331050);the Doctorate Foundation of Northwestern Poly-technical University (No. CX200507).; The coarsening behavior of L12 and D022 in Ni75AlxV25-x （x,at.%） alloys including coherent strain was investigated using the microscopic phase-field model. The simulation results indicate that the shape transition a...; 关键词：ternary system phase transformation coarsening dynamics microscopic phase-field Ni75AlxV25-x

Dynamic scaling behaviour of late-stage phase separation in Ni75AlxV25-x alloys被引量：5: 《Chinese Physics B》2007年第3期854-861,共8页李永胜陈铮卢艳丽徐国栋; Project supported by the National Natural Science Foundation of China （Grant No 50071046） and the National High Technology and Development Program of China （Grant No 2002AA331050）, and the Doctorate Foundation of Northwestern Polytechnical University of China （Grant No CX200507）.; The dynamic scaling behaviour of late-stage phase separation and coarsening mechanisms of L12 and D022 in Ni75AlxV25-x （3 ≤ x ≤ 10, at.%） alloys are studied using the microscopic phase-field dynamic model. The mic...; 关键词：phase separation dynamic scaling elastic interaction microscopic phase-field simulation

Microscopic phase-field simulation coupled with elastic strain energy for precipitation process of Ni-Cr-Al alloys with low Al content被引量：1: 《中国有色金属学会会刊：英文版》2007年第1期64-71,共8页卢艳丽陈铮李永胜王永欣; Projects(50671084,50071046)supported by the National Natural Science Foundation of China;Project(2002AA331051)supported by the National Hi-Tech Research Development Program of China; The precipitation process of Ni-Cr-Al alloy with low Al content was studied at atomic scale based on the microscopicphase-field kinetic model coupled with elastic strain energy.The aim is to investigate the effect of ...; 关键词：弹性应变能量合金镍铝沉淀作用

Microscopic phase-field simulation of L1_2 and D0_(22) phases during the early precipitation process of Ni-Cr-Al alloys被引量：1: 《Journal of University of Science and Technology Beijing》2006年第5期429-434,共6页Zhong Chu Zheng Chen Yongxin Wang Yanli Lu Yongsheng Li; This work was financially supported by the National Natural Science Foundation of China (No.50071046) and the National High-Tech Research and Development Program of China (No.2002AA331051).; The influence of temperature on the precipitation mechanism and sequence of L 12 and D022 phases during the early precipitation process of a Ni-15.Sat%Cr-14at%Al alloy was simulated based on the microscopic phase-fiel...; 关键词：Ni-Cr-AI alloys microscope phase-field model precipitation ordering parameter simulation

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