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during semi-solid isothermal heat treatment were investigated deeply in the present work. Results showed that the lamellar (Mg,Al)3Gd phases transformed into the particle-like Al2Gd phases in AZ31 magnesium alloys with Gd addition during semi-solid isothermal heat treatment, leading to yielding more spherical α-Mg grains. When Gd content is 2.0 wt. %, the size of semi-solid spherical grains......
HEAT TREATMENT STRENGTHENING EFFECTS OF RARE EARTHS ON Mg-9Al ALLOY Y.S.Wang1,W.J.Ding2,Q.D.Wang2,J.Z.Yu1 (1.Shanghai Cosmopolitan Automobile Accessory Co. LTD, Shanghai 200083, China;2.School...%), respectively. Influence of rare earths (RE) on microstructureand strength in both T4 (solute heat treatment) and T6 (solute heat treatment andartificial ageing treatment) were investigated......
metallurgy and subsequent heat treatment LIU Rui-feng(刘瑞峰)1, 2, WANG Wen-xian(王文先)2, 3, CHEN Hong-sheng(陈洪胜)2, 4 1. College of Aeronautics and Astronautics, Taiyuan University of Technology, Taiyuan 030024...-sized B4C and Mg2Si. The stress distributions of as-rolled and heated composites were similar, considering that the T6 heat treatment was only effective in eliminating the first internal stress......
Influence of processing parameters and heat treatment on phase composition and microstructure of plasma sprayed hydroxyapatite coatings ZHAO Guo-liang(赵国亮)1, WEN Guang-wu(温广武)1, WU Kun... parameters on the phase composition and the microstructure of the obtained coatings was investigated. The effect of heat treatment on as-sprayed coating in terms of the crystallinity......
Effect of holding time on microstructure of Mg-9Al-1Si alloy during semisolid isothermal heat treatment MA Guo-rui(马国睿), LI Xin-lin(李新林), LI Qing-fen(李庆芬) Center for Biomedical... microstructure can be produced by the semi-solid isothermal heat treatment. With holding time varying from 5 to 30 min, the volume fraction of liquid is gradually enlarged from 29.3% to 38.6......
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EFFECTS OF HEAT TREATMENT ON THE MICROSTRUCTURE OF Cu-Zn-Al (RE) SHAPE MEMORY ALLOYS S.C.Sun1,N.C.Si1 (1.Material Science and Engineering School,Jiangsu University of Science and Technology,Jiangsu 212013,China) Abstract:The effects of heat treatment on the Cu-Zn-Al shape memory alloys with mixed REwere researched with the help of X-ray diffraction and transmission electron micro-scope (TEM......
Surface Cleaning or Activation?Control of Surface Condition Prior to Thermo-Chemical Heat Treatment Brigitte Haase1,Juan Dong2,Jens Heinlein2 (1.Hochschule Bremerhaven, Dpt. Of Process Engineering, Bremerhaven, Germany;2.Stiftung Institut fur Werkstofftechnik, Bremen, Germany) 摘要:Actual heat treatment processes must face increasing specifications with reference to process quality, safety......
-independent logarithmic decrement for the specimens annealed at higher temperatures is a little lower than that for as-cast specimen, and it increases with increasing temperature of heat treatment. Microstructure changes due to heat treatment are responsible for changes of the logarithmic decrement. Key words: AZ61 magnesium alloy; heat treatment; damping; dislocation ......
Microstructure evolution of semi-solid Mg-14Al-0.5Mn alloys during isothermal heat treatment ZHANG Liang(张 亮), CAO Zhan-yi(曹占义), LIU Yong-bing(刘勇兵) Key Laboratory of Automobile... that exhibits a wide solidification range and sufficient fluidity for semi-solid forming was designed. And the microstructure evolution of semi-solid Mg-14Al-0.5Mn alloy during isothermal heat treatment......
