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. Microstructure changes due to heat treatment are responsible for changes of the logarithmic decrement. Key words: AZ61 magnesium alloy; heat treatment; damping; dislocation ..., the absolute temperature T and the specific heat capacity C. f0 depends on the thickness a of the specimen and the thermal conductivity κ. Using the data for AZ61 alloy(E=45 GPa[10], α=27.2×10-6 K-1......
Effect of Heat Treatment on the Microstructure and Corrosion Resistance of Cu-Zn Alloy Zhao Xiangling1,Xu Tao2,Xiao Nianxin3,Zhang Hailong3 (1.College of Materials Science, Yanshan University..., Qinhuangdao 066004, China) Abstract:The microstructure of Cu-Zn alloy with different heat treatment conditions in 3.5% NaCl + NH3 solution were observed, and the average corrosion rates......
Effect of heat treatment on microstructure and dimensional stability of ZL114A aluminum alloy JIANG Long-tao(姜龙涛), WU Gao-hui(武高辉), YANG Wen-shu(杨文澍), ZHAO Yong-gang(赵永刚), LIU Shan-shan(刘珊珊... alloy; microstructure; heat treatment; dimensional stability 1 Introduction ZL114A alloy is high strength Al-Si-Mg casting aluminum alloy, which is produced by adding a certain amount of Mg into Zl101A......
, and then different heat treatments were performed to improve their properties. The microstructures and tensile properties of the alloy sheets were investigated, including as-rolled, annealed and T5..., the ultimate tensile strength is 456.8 MPa, yield strength is 348.9 MPa, and elongation is 3.8%. Keywords: Mg-Gd-Y alloy; hot rolling; precipitation; heat treatment; mechanical properties ......
Heat transfer characteristics of lost foam casting process of magnesium alloy
LIU Zi-li(刘子利)1, 2, PAN Qing-lin(潘青林)2,
CHEN Zhao-feng(陈照峰)1, LIU Xi-qin(刘希琴)1, TAO Jie(陶 杰)1
1. College... decreases slightly at low pouring temperature.
Key words: magnesium alloy; lost foam casting; heat transfer
......Microstructural evolution of a forged TiAl based alloy during heat treatment at subtransus temperature
来源： 《中国有色金属学报(英文版)2000年第2期》——唐建成 黄伯云 刘文胜 贺跃辉
线分析 图2所示为挤压态阻燃钛合金在不同应变速率下的真应力-真应变曲线,可以看出. 图1 试验用阻燃钛合金的显微组织 Fig. 1 Initial microstructures of burn resistant titanium alloy 图2 挤压态阻燃钛合金不同应变速率下的真应力-真应变曲线 Fig. 2 True stress-strain curves of as-extruded burn resistant titanium alloy at different strain rates 1) 当应变速率一定时,变形温度越高,流变应力越小(1100和1150 ℃与此规律不符,推测与此温度区间内合金中的碳化物第二相的溶解现象有关[6]).这是因为随着变形温度的升高,原子的平均动能增大,位错运动和晶面滑移更加容易,另外,动态......
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