张志正
,
王春旭
,
黄顺喆
,
厉勇
,
刘宪民
,
周晓龙
机械工程材料
采用Gleeble-3800型热模拟试验机在温度1 173～1 473 K、应变速率0.01～10 s-1的条件下,对镍微合金化9310钢的高温热变形前行为进行了研究,得到了试验钢的高温流变曲线,并用光学显微镜观察了试验钢变形前后的显微组织.结果表明:镍微合金化9310钢的流变应力和峰值应变随着变形...
关键词:
镍微合金化
,
9310钢
,
流变应力
,
热变形激活能
,
热变形行为
关小军
,
付杰
,
禹宝军
,
王丽君
材料热处理学报
为了改善动态再结晶恒形核率模型的模拟精度,基于动态再结晶模拟理论和闭环控制原理,提出了一种采用实验与模拟的流变应力差的闭环控制和黄金搜索法来确定真实瞬态形核率的方法,通过HPS485wf钢动态再结晶过程的元胞自动机仿真研究检验了它的合理性和应用效果.结果表明,这一方法合理、可行,可有效确定瞬态形核率...
关键词:
动态再结晶
,
形核率
,
元胞自动机
,
模拟
,
流变应力
JIANG Zhonghao
,
GUAN Zhenzhong
,
ZHANG ZuomeiChangchun Institute of Optics and Fine Mechanics
,
Chinese Academy of Sciences
,
Changchun
,
ChinaLIA N JiansheJilin University of Technology
,
Changchun
,
China
金属学报(英文版)
Bused on the deformation model of dual phase steels, an expression for the stress of martensite in dual phase steels is derived, it predictes that the onset of plastic deformation of martensite (transition strain) depends on the strain hardening of ferrite and on the strength of martensile. The rela...
关键词:
dual phase steel
,
null
,
null
,
null
J. T. Liu
,
H.B. Chang
,
R.H. Wu
,
T. Y. Hsu(Xu Zuyao) and X.R. Ruan( 1)Department of Plasticity Technology
,
Shanghai Jiao Tong University
,
Shanghai 200030
,
China 2)School of Materials Science and Engineering
,
Shanghai Jiao Tong University
,
Shanghai 200030
,
China)
金属学报(英文版)
The hot deformation behavior of TI (18W-4Cr-1V) high-speed steel was investigated by means of continuous compression tests performed on Gleeble 1500 thermomechan- ical simulator in a wide range of tempemtures (950℃-1150℃) with strain rotes of 0.001s-1-10s-1 and true strains of 0-0. 7. The flow str...
关键词:
T1 high-speed steel
,
null
,
null
,
null
,
null
J. T.Niu
,
L.J.Sun and P.Karjalainen 1) Harbin Institute of Technology
,
Harbin 150001
,
China 2) University of Oulu
,
FIN-90571
,
Oulu
,
Finland
金属学报(英文版)
For the great significance of the prediction of control parameters selected for hot-rolling and the evaluation of hot-rolling quality for the analysis of prod uction problems and production management, the selection of hot-rolling control parameters was studied for microalloy steel by following the ...
关键词:
microalloy steel
,
null
,
null
,
null
,
null
,
null
J.M. Zhang
,
L.Z. Ma
,
J. Y. Zhuang
,
Q. Deng
,
J.H Du and Z. Y Zhong(Department of Superalloys
,
Central Iron & Steel Research Institute
,
Beijing 100081
,
China)P. Janschek(Thyssen Umformtechnik GMBH
,
42859 Remscheid
,
Germany Manuscript received 26 August 1996)
金属学报(英文版)
Isothermal constant speed compression tests of superalloy IN718 were conducted using a computer-controlled MTS machine at temperatures from 960 to 1040℃, with initial strain rates from 0.001 s~(1) to 1.0 s~(1) and engineering strain from 0.1 to 0. 7.The variations of flow stress with deformation tem...
关键词:
: constitutive relationship
,
null
,
null
