MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A Ni_3Al-Fe BASED ALLOY

查看全文 作　　者：LI Hui GUO Jianting TAN Minghui SUN Chao LAI Wanhui WANG Shuhe Institute of Metal Research,Academia Sinica,Shenyang,China Professor,Institute of Metal Research,Academia Sinica,Shenyang 110015,China 出　　处：《Acta Metallurgica Sinica(English Letters)》索引1993年第6卷第1期,共6页 摘　　要：The microstructure,tensile properties at 20—950℃ and creep rupture properties at 700-900℃ in a Ni₃Al-Fe based alloy after high temperature deformation have been studied.Theresults show the microstructure of the alloy is composed of γ′-and β-phases.The grain sizeand yield strength of the alloy is stable when the temperature≤600℃,and it is ductile athigh temperature.The creep of the alloy at 700—900℃ is controlled by the climbing of dislo-cations,and the activation energy for creep is 439 KJ/mol with a stress exponent of 4. 关 键 词：Ni₃Al-Fe BASED ALLOY microstructure mechanical PROPERTY creep rupture PROPERTY