国家自然科学基金(50471097)

作品数:8被引量:50H指数:4
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相关作者:陈国良李红宇宋西平王艳丽左玲立更多>>
相关机构:北京科技大学更多>>
相关期刊:《Journal of Iron and Steel Research International》《材料工程》《稀有金属材料与工程》《Science China(Physics,Mechanics & Astronomy)》更多>>
相关主题:高温合金MICROHARDNESSGH742FGH95合金相稳定性更多>>
相关领域:金属学及工艺一般工业技术理学轻工技术与工程更多>>
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Characterization of γ′ precipitates in a nickel base superalloy quenching from aging temperature at different rates被引量:4
《Rare Metals》2010年第2期204-208,共5页LI Hongyu, SONG Xiping, WANG Yanli, and CHEN Guoliang State Key Lab for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China 
supported by the National Natural Science Foundation of China (No. 50471097)
The characteristics of γ′ precipitates in a superalloy quenched from 1050°C at different rates were investigated using field emission scanning electron microscope(FESEM).When quenched from 1050°C, the size of pr...
关键词:superalloys precipitates quenching rate microhardness 
GH742中γ′相和γ基体成分随时效时间和温度的变化规律研究被引量:1
《材料工程》2009年第7期12-15,22,共5页李红宇 宋西平 王艳丽 陈国良 
国家自然科学基金资助项目(50471097)
利用透射电镜能谱法(TEM-EDX)研究了GH742合金中γ′和γ基体两相成分随温度和时效时间的变化规律。结果表明:合金在1050℃时效时,γ′相和γ基体的成分在时效初期变化较大,当时效时间超过1440min后,γ′相和γ基体的成份基本稳定。合金...
关键词:高温合金 相成分 能谱分析EDX 偏析率Cγ′/Cγ 
Coarsening and Age Hardening Behaviors of γ' Particles in GH742 During High Temperature Treatment被引量:4
《Journal of Iron and Steel Research International》2009年第5期81-86,共6页LI Hong-yu SONG Xi-ping WANG Yan-li CHEN Guo-liang 
Sponsored by National Natural Science Foundation of China(50471097)
The coarsening and ageing hardening behaviors of γ′ particles in superalloy GH742 have been investigated by field emission scanning electron microscopy (FESEM), coarsening kinetics calculation and microhardness te...
关键词:SUPERALLOY γ′ particle coarsening kinetics activation energy MICROHARDNESS 
Coarsening behavior of γ' particles in a nickel-base superalloy被引量:6
《Rare Metals》2009年第2期197-201,共5页Li, Hongyu  Zuo, Lingli  Song, Xiping  Wang, Yanli  Chen, Guoliang 
the National Natural Science Foundation of China (No. 50471097);the Programme of Introducing Talents of Discipline to Chinese Universities (No. B07003).
The coarsening behavior of γ particles in a nickel-base superalloy FGH95 was investigated by means of experimental observations and growth kinetics calculations. The results show that when aging at 1000,1080 and 1140...
关键词:nickel-base superalloys γ particles coarsening behavior particle size distribution activation energy 
FGH95合金中γ′相稳定性研究被引量:20
《稀有金属材料与工程》2009年第1期64-67,共4页李红宇 宋西平 王艳丽 陈国良 
国家自然科学基金资助项目(50471097)
利用扫描电镜和透射电镜观察分析了热等静压HIP FGH95高温合金经热处理后,基体中γ′相的形貌、分布和稳定性。结果表明:合金经热处理后基体为再结晶晶粒与原始枝晶的混晶组织。基体中除了晶界上分布的固溶处理未溶的棒状γ′相颗粒外,...
关键词:FGH95合金 热等静压 γ′相 分解 
Atomic structures of Zr-based metallic glasses被引量:8
《Science China(Physics,Mechanics & Astronomy)》2008年第4期400-413,共14页HUI XiDong LIU XiongJun GAO Rui HOU HuaiYu FANG HuaZhi LIU ZiKui CHEN GuoLiang 
the National Natural Science Foundation of China (Grant Nos. 50431030 and 50471097);the National Basic Research Program of China (Grant No. 2007CB613901);the Programme of Introducing Talents of Discipline to Universities (Grant No. B07003)
The atomic structures of Zr-Ni and Zr-Ti-Al-Cu-Ni metallic glasses were investigated by using classical molecular dynamic (MD),reverse Monte Carlo (RMC),ab initio MD (AIMD) simulations and high resolution transmission...
关键词:METALLIC GLASSES ATOMIC structure SHORT-RANGE order medium-range order molecular dynamics REVERSE MONTE Carlo 
高Cu高强Zr基块体非晶合金的制备与力学性能(英文)被引量:3
《稀有金属材料与工程》2008年第2期320-324,共5页张翠梅 惠希东 刘雄军 陈国良 
National Nature Science Foundation of China(50431030and50471097); National Basic Research Program of China(2007CB613901)
利用铜模铸造的方法制备了(Zr41.2Ti13.8Ni10Be22.5)1-x/87.5Cu12.5+x (x=1.6,6,11.2)块体非晶合金及其复相组织,分析了合金的相组成、热稳定性、力学性能及断口形貌。结果表明:随着铜含量的不断增多,尽管过冷液相区(△Tx)逐渐增大,但...
关键词:ZR基块体非晶合金 玻璃形成能力 压缩断裂强度 
GH742合金中γ′相粗化动力学研究被引量:7
《材料工程》2007年第8期8-11,共4页李红宇 左玲立 宋西平 王艳丽 陈国良 
国家自然科学基金资助项目(50471097)
采用场发射扫描电镜观察和定量金相分析等方法,研究了GH742合金在900,950,1050℃时效时,基体中γ′相的粗化规律。结果表明:合金在一定温度时效时,基体中初期析出的高密度细小γ′相随时效时间延长逐渐长大为低密度粗大γ′相,即发生Ost...
关键词:高温合金 γ′相 粗化动力学 激活能 
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