共搜索到28880条信息,每页显示10条信息,共2888页。用时:0小时0分0秒546毫秒
on the zones of deferent deformation characteristics was performed after compression. In the meantime, numerical simulations of the compression process with the deformation parameters same as those used... Microstructure evolution of casting Mg alloy AM60B subjected to compression deformation CAO Han-xue(曹韩学)1, 2, LONG Si-yuan(龙思远)1, 2, YOU Guo-qiang(游国强)1, 2, LIAO Hui-min(廖慧敏)1 1. College......
Role of pre-vertical compression in deformation behavior of Mg alloy AZ31B during super-high reduction hot rolling processWeitao Jia,Qichi Le,Yan Tang,Yunpeng Ding,Fangkun Ning,Jianzhong CuiKey... with different thickness reductions per pass and prevertical compression followed by super-high reduction hot rolling(PVCR), respectively. Microstructure evolution, rolling formability variation......
好地描述ZK60镁合金的流变应力,其预测值与实验值吻合很好;利用该模型预测的变形温度和应变速率对流变应力的影响结果与一般热加工理论所得结果一致. 关键词:ZK60镁合金;人工神经网络;流变应力;热压缩变形 中图分类号:TG 146.2 文献标识码:A Hot compression deformation behavior... on the flow behavior of the ZK60 alloy are consistent with what is expected from he fundamental theory of hot compression deformation. Key words: ZK60 magnesium alloy; artificial neural network......
Twinning during hot compression of ZK30+0.3Yb magnesium alloy YE Cheng-wu(叶呈武), LIU Zhi-yi(刘志义),ZHANG Kun(张 坤), ZHENG Qing-chun(郑青春) (School of Materials Science and Engineering, Central South University, Changsha 410083, China) Abstract: The twinning process of ZK30+0.3Yb magnesium alloy was studied. The results show that twinning occurs at the initial stage of deformation......
University of Technology, Hamedan, Iran Received 4 February 2013; accepted 3 June 2013 Abstract: Hot compression tests were carried out on a Fe-29Ni-17Co alloy in the temperature range of 900 °C to 1200 °C and at strain rates of 0.001-1 s-1. Dynamic recrystallization was found responsible for flow softening during hot compression. The flow behavior was successfully analyzed by the hyperbolic sine......
Flow behavior and microstructure evolution of TB8 alloy during hot deformation process DUAN Yuan-pei(段园培), LI Ping(李 萍), XUE Ke-min(薛克敏), ZHANG Qing(张 青), WANG Xiao-xi(王小溪) School of Materials...; Abstract: Hot compression tests of metastable β titanium alloy TB8 were carried out using......
was then verified by using DEFORM-3 D finite element analysis to simulate the experimental hot compression process. The results show that the modified equation successfully predicts flow stress, load... the high strain rate correction into account. The constitutive equation for a31 vol.% B4Cp/6061 Al composite was constructed based on the flow stresses measured during isothermal hot compression......
deformation. Furthermore, the dynamic recrystallization behavior was effectively suppressed during the hot compression process because spherical Al3Zr precipitates pinned the dislocation movement...Effects of hot compression deformation temperature on the microstructure and properties of Al–Zr–La alloysXian-hua Yue1,Chun-fang Liu2,Hui-hua Liu2,Su-fen Xiao1,Zheng-hua Tang1,Tian Tang11. College......
with a peak efficiency of about 60%, and a domain of β dynamic recrystallization in the β region with a peak efficiency of 80%. Key words: titanium alloy; Ti-6.5Al-3.5Mo-1.5Zr-0.3Si; hot compression... from the heat-treated samples. Hot compression tests were carried out at temperatures ranging from 860 to 1 100 °C and strain rates from 0.01 to 10 s-1. Samples were reheated to the test temperature......
; constitutive equation? flow stress? isothermal compression 1 Introduction In the field of process modeling, finite element method (FEM) is used as a common tool to find out the optimum thermo-mechanical process parameters in metal forming processes, such as hot rolling, extrusion and forging. Constitutive equation which represents the flow behavior of materials is commonly used as input to the FEM code......