共搜索到15735条信息,每页显示10条信息,共1574页。用时:0小时0分0秒218毫秒
Experimental Study of Microstructure Evolution during Tempering of Quenched Steel and Its Application CHEN Nan1,SHI Wei1,YAO Ke-fu1,WANG Hong-peng1 (1.Mechanical Engineering Department, Tsinghua University, Beijing 100084, P.R. China) 摘要:Microstructure evolution during tempering of quenched steel was studied via dilatometric experiments.Temperature ranges of transformation were determined......
Microstructure and Mechanical Properties of Tic/NiCrMo Cermets Produced by Liquid Sintering Technique Jing BI1,Dehui GUAN1,Yue LIU1,Baohai YU1 (1.Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110015) 摘要:The effect of M additions on the microstructure and mechanical properties of TiC-based cermet produced by li oquid sintering method of powder metallurgy was investigated......
......
Microstructure of hot-pack rolled Ti-43Al-9V-0.3Y alloyCHEN Yu-yong(陈玉勇), KONG Fan-tao(孔凡涛), CHEN Zi-yong(陈子勇), TIAN Jing(田 竞)(School of Materials Science and Engineering,Harbin Institute of Technology, Harbin 150001, China)Abstract:A kind of Ti-43Al-9V-0.3Y alloy sheet material using hot-pack rolling method is prepared. The microstructures of this alloy containing α2/γ lamellar microstructure......
Microstructure evolution of TA15 titanium alloy during hot power spinningCHEN Yong, XU Wen-chen, SHAN De-bin, GUO Bin(School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China)Abstract:The microstructure evolution of TA15 titanium alloy during hot power spinning was studied. Effects of wall reduction on microstructure evolution of TA15 titanium alloy were......
......
;Zn含量的增加降低了Al在Mg中的溶解极限,促进了β-Mg17Al12相在晶界的析出及α-Mg+β-Mg17Al12离异共晶组织的形成;Zn元素的偏析倾向为激活成分过冷区内的形核质点提供了驱动力,从而阻碍了晶粒长大. 关键词:镁合金;喷射成形;微观组织 中图分类号:TG132.1+1 文献标识码:A Microstructure.... The microstructure evolution of the alloys was observed. The microstructure analysis shows that the microstructure of the conventional as-cast AZ91 alloy consists of coarse grains, and the brittle β-Mg17Al12 phases......
......
J. Cent. South Univ. Technol. (2009) 16: 0906-0913 DOI: 10.1007/s11771-009-0151-y Preparation and microstructure characterization of poly-sialate-disiloxo type of geopolymeric cement ZHANG Yun... the microstructure of the most fully reacted geopolymeric cement matrix. The experimental results show that n(K2O)/n(Al2O3) has the most significant effect on compressive strength amongst the three ratios......
......