刘毅
,
林栋梁
,
汪德宁
,
陈达
,
陈世朴
,
刘治国
,
孟祥康
金属学报
利用透射电子显微镜研究了ＰＳＴ双相ＴｉＡｌ类单晶室温变形后的位错特征。发现除微孪晶和１／２＜１１０］单位位错外，＜０１１］超点阵位错和１／２＜１１２］超点阵位错也参与了变形。＜０１１］位错通常发生：［１０１］→１／２［１０１］＋ＡＰＢ＋１／６［２１１］＋ＳＩＳＦ＋１／６［１ ２］的分解，而１／２＜１...
关键词:
ＰＳＴ晶体
,
TiAl
,
intermetallics
,
dislocation
,
deformation
刘毅
,
林栋梁
,
汪德宁
,
陈达
,
陈世朴
,
刘治国
,
孟祥康
金属学报
利用透射电子显微镜研究了ＰＳＴ双相ＴｉＡｌ晶体高温变形后的位错组态。发现微孪晶变形、１／２＜１１０］单位位错、＜０１１］超点阵位错、１／２＜１１２］超点阵位错均参与了变形。螺型＜０１１］超点阵位错可在｛１００｝面上分解，构成Ｋｅａｒ－Ｗｉｌｓｄｏｒｆ锁。４００℃，６００℃变形时由１／２＜１１２］位错...
关键词:
ＰＳＴ晶体
,
TiAl
,
intermetallics
,
dislocation; high temperature deformation
,
null
Y.Umakoshi
,
T. Nakano and H .Y. Yasuda (Department of Materials Science and Engineering
,
Faculty of Engineering
,
Osaka University
,
2-1
,
Yamada-Oka
,
Suita
,
Osaka 565 Japan)
金属学报(英文版)
Plastic behaviour of TiAl polysynthetically twinned (PST) crystals is reviewed to show our knowledge and understanding for receiving a good combination of strength and ductility of two phase TiAl alloys under monotonic and cyclic loading conditions. Anisotropy and mechanism of strength, ductility, t...
关键词:
:Fatigue. Deformation
,
null
,
null
P. He
,
J. H. Zhang
,
J. C. Feng and Y. Y. Qian (National Key Laboratory of Advanced Welding Production Technology
,
HIT
,
Harbin 150001
,
China)
金属学报(英文版)
TiAl was diffusion bonded to Ti and TC4 alloy in vacuum furnace. Results showed,at the TiAl-Ti interface,the reaction layer of stratification Ti3Al was formed closest to TiAl base,and the a phase and the α + βphase arised closest to Ti base at 1173K and 1573K respectively. The phase structure of...
关键词:
diffusion bonding
,
null
,
null
