郭守仁
,
卢德忠
,
郭建亭
,
吴晰
金属学报
本文研究了GH35A合金在650—750℃,100—10000h时效过程中性能和组织的变化。结果表明,合金室温拉伸强度基本不受时效温度和时间的影响,而室温塑性、韧性及700℃持久寿命在时效至某一时间后开始降低,但下降速度缓慢,直到10000h仍有较高的水平。同时,随时效温度提高,性能降低的开始时间缩...
关键词:
高温合金
,
aging
,
mechanical property
,
σ-phase
,
γ′-phase
吴惕言
,
吴起白
,
RIQUIERY.
金属学报
研究了铁素体(F)-奥氏体(A)双相不锈钢在600—1100℃范围内的力学性能,其韧性-温度曲线在800-900℃之间有一极小值。阐述了σ相析出动力学及其对材料力学性能的影响,σ相严重损害合金塑性,其影响程度随σ相含量的增加而增高,并与试验温度有极大的关系,1000℃时σ相对拉伸性能影响消失。
关键词:
双相不锈钢;σ相
,
σ-phase
宾远红
,
李培芬
,
李志铮
,
范兆永
材料热处理学报
采用金相显微镜、扫描电镜、能谱分析、室温冲击等方法,研究了不同固溶温度下2205双相不锈钢σ相析出行为以及对冲击性能的影响,用于指导双相不锈钢的热加工工艺.结果表明:在750～ 900℃时,有σ相析出,析出位置集中在α/γ相界上.随着固溶温度的升高,σ相析出尺寸变大,析出量呈先增多再减少,σ相析出的...
关键词:
双相不锈钢
,
固溶处理
,
σ相
,
冲击韧性
LIU Shicheng
,
Dalian Railway Insitute
,
Dalian
,
ChinaHamaguchi Yoshikazu
,
Kuwano Hisashi
,
Muroran Institute of Technology
,
Muroran
,
Japan
金属学报(英文版)
The stable ranges concerning the composition and temperature have been experimentally de- termined for the intermetallic compounds in system Fe-Cr-Mo at high-temperatures. The isothermal section of the Fe-Cr-Mo ternary phase diagram at 1250℃ and the formation re- actions for the intermetallic compou...
关键词:
Fe-Cr-Mo system
,
null
,
null
,
null
,
null
GUO Shouren LU Dezhong GUO Jianting Institute of Metal Research
,
Academia
,
Shenyang
,
ChinaWU Xi Fushun Steel Works
,
Fushun
,
China Associate Professor
,
Institute of Metal Research
,
Academia Sinica
,
Shenyang 110015
,
China
金属学报(英文版)
The mechanical properties and microstructure of an Fe-base superalloy GH35A have been examined after aging at 650—750℃ for 100—10000 h.The tensile strength of the alloy changes no more with aging temperature and the time at room temperature,but the ductility and impact toughness at room temperature,...
关键词:
superalloy
,
null
,
null
,
null
,
null
NI Kequan CHEN Guoliang ZHU Ping XIA Haiping ** Dept.of Materials Science & Engineering
,
University of Science and Technology Beijing
,
Beijing
,
100083
,
China*** Shenzhen Jinyuan Stainless Steel Co.Ltd.
,
Shenzhen.518067
,
China+ To whom correspondence should be a
材料科学技术（英文）
Using the calculation of thermodynamic equilibria in multicomponent systems,two ternary phase diagrams,Ni-Cr-Mo and Ni-Cr-Co,have been calculated by optimizing the Gibbs free ener- gies with respect to phase diagrams and thermodynamic data.On the basis of this calcula- tion,the occurrence of σ-phase...
关键词:
thermodynamics
,
null
,
null
,
null
