A research on the creep properties of titanium matrix composites rolled with different deformation degrees

被引：21

作者：

Guo, Xianglong ^{[1
]}

Lu, Weijie ^{[1
]}

Wang, Liqiang ^{[1
]}

Qin, Jining ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200240, Peoples R China

来源：

MATERIALS & DESIGN | 2014年 / 63卷

关键词：

Titanium matrix composites; Deformation degree; Creep; Dislocation; Gain refinement; TiB whisker; SHORT-FIBER COMPOSITES; SITU SYNTHESIZED (TIB; STEADY-STATE CREEP; TENSILE PROPERTIES; GRAIN-SIZE; HEAT-TREATMENT; BEHAVIOR; TEMPERATURE; MICROSTRUCTURE; PREDICTION;

D O I：

10.1016/j.matdes.2014.05.063

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

(TiB + La2O3)/Ti composites were in situ synthesized and deformed with different deformation degrees. The influence of TiB whisker orientation and grain refinement on the creep properties of titanium matrix composites (TMCs) are discussed. The creep test reveals that the steady state creep rate of TMCs first decreases and then increases with the increase of deformation degree, which can be attributed to competing effects: TiB whisker rotating to the rolling direction, alpha plate grain boundary hindering and pinning dislocations can all decrease the creep rate, however, dislocation movement on the alpha plate grain boundary and dislocation emitting from the alpha plate grain boundary can both increase the creep rate. (C) 2014 Published by Elsevier Ltd.

引用

页码：50 / 55

页数：6

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