典型文献
Twin and twin intersection phenomena in a creep deformed microalloyed directionally solidified high Nb containing TiAl alloy
文献摘要：
The creep behavior of a directionally solidified TiAl alloy with a high Nb content after microalloying by the addition of small amounts of W,Cr,and B elements was investigated by scanning electron microscopy and transmission electron microscopy.By means of directional solidification and microalloying,a TiAl al-loy with a fine and uniform microstructure and continuous columnar crystals was obtained.High-density dislocations,deformation nanotwins,and twin intersections were observed in y lamellae.The results show that,in comparison with the ternary TiAl alloy,the microalloyed high Nb containing TiAl alloy ex-hibited better creep properties at 760℃and 275 MPa.The decrease in stacking fault energy can promote dislocation dissociation and the formation of deformation twins,and the twin intersections can hinder the movement of dislocation to enhance the creep performance of the TiAl alloy.
文献关键词：
中图分类号：
作者姓名：
Xuesong Xu;Hongsheng Ding;Haitao Huang;He Liang;Hao Guo;Ruirun Chen;Jingjie Guo;Hengzhi Fu
作者机构：
National Key Laboratory for Precision Hot Processing of Metals,School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China
文献出处：
引用格式：
[1]Xuesong Xu;Hongsheng Ding;Haitao Huang;He Liang;Hao Guo;Ruirun Chen;Jingjie Guo;Hengzhi Fu-.Twin and twin intersection phenomena in a creep deformed microalloyed directionally solidified high Nb containing TiAl alloy)[J].材料科学技术（英文版）,2022(32):115-123
A类：
microalloyed,nanotwins
B类：
Twin,phenomena,creep,deformed,directionally,solidified,high,Nb,containing,TiAl,behavior,content,after,microalloying,by,addition,small,amounts,elements,was,investigated,scanning,electron,microscopy,transmission,By,means,solidification,fine,uniform,microstructure,continuous,columnar,crystals,obtained,High,density,dislocations,deformation,intersections,were,observed,lamellae,results,show,that,comparison,ternary,ex,hibited,better,properties,decrease,stacking,fault,energy,promote,dissociation,hinder,movement,enhance,performance
AB值：
0.480349
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