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Ti3Al基合金板材的超塑性研究王旭,曹京霞,黄旭北京航空材料研究院摘 要:研究非典型等轴细晶的两种不同轧制变形量的Ti3Al基合金热轧板的超塑性变形行为及其变形前后的显微组织.研究结果表明:该合金在超塑性变形过程中组织会转化为有利于超塑性的细小等轴组织.其在变形温度为940~1020℃,应变速率为2×10-4~2×10-3S-1时具有良好的超塑性,其最大伸长率可达859.5%,应变速率敏感指数达0.43,该合金超塑性变形的主要机制是晶界滑动,而且这种非典型等轴细晶条件下超塑性变形时晶内变形以及位错蠕变所起的作用比在等轴细晶态组织条件下的作用更为显著.对非典型等轴细晶的Ti3Al基合金热轧板,无需进行复杂热处理,也可以获得良好的超塑性,更具有工业意义.关键词:Ti3Al基合金;超塑性;显......
Liquid-liquid phase separation in highly undercooled Ni-Pb hypermonotectic alloys YANG Gen-cang(杨根仓)1, XIE Hui(谢 辉)1, 2, HAO Wei-xin(郝维新)1, ZHANG Zhong-ming(张忠明)2, GUO Xue-feng(郭学锋)2 1. State...; Abstract: Liquid-liquid phase separation in the undercooled Ni-20%Pb(mole fraction, the same below if not mentioned) hypermonotectic melts......
First-Principles Study of Phase Stability and Mechanical Property of Co_3(Al,W) Precipitates with Different Ratio of Al to W in Co Base Alloys () 摘要:The energetics, electronic structure... cobalt matrix. 关键词:phase stability; mechanical property; first-principles; Co base alloy; [全文内容正在添加中] ......
Preparation of BaMgAl10O17∶Eu2+ and Its Phase Behavior in Microemulsion System Zhuang Weidong1,Huang Xiaowei1,He Huaqiang1,Cui Xiangzhong1,Zhang Xiying1 (1.National Engineering Research Center... system and its phase behavior was studied. There exists a small region in the reverse microemulsion system where the dispersed particles are of spherical form. In this way, BAM blue phosphor with good......
Phase stability and structural distortion of NiO under high pressure ZHANG Wei-bing(张卫兵), HU Yu-lin(胡玉林), TANG Bi-yu(唐壁玉) Key Laboratory of Advanced Materials and Ryeological Properties of Ministry of Education, Department of Physics, Xiangtan University 411105, China Received 10 April 2006; accepted 25 April 2006 Abstract: The phase stability and structural distortion of NiO under high......
Phase selection of ternary intermetallic compounds during solidification of high zinc magnesium alloy GUAN Shao-kang(关绍康)1, ZHANG Chun-xiang(张春香)1, WANG Li-guo(王利国)1, WU Li-hong(吴立鸿)1, CHEN Pei...; Abstract: The phase selection of ternary intermetallic compound τ phase (Mg32(Al, Zn)49 ) and φ phase (Al2Mg5Zn2) in high zinc magnesium alloys was studied......