摘要
研究了Ti-15-3合金以不同的应变速率进行一段拉伸与二段拉伸后的力学性能与微观组织。试样在超塑性变形过程中发生了不同程度的连续动态再结晶,第二相粒子弥散分布在β相基体中,晶粒尺寸随变形量的增加而减小,而晶界取向差则随变形量的增加而增加。非理想组织的Ti-15-3合金在二段拉伸条件下表现出更好的超塑性。
The mechanical properties and microstructure of Ti-15-3 alloy were investigated after singlestage and two-stage tensile tests at different strain rates. Dynamic continuous recrystallization occurs during superplastic deformation. Second-phase particles disperse in the matrix of β phase. With the increase of strain, grain size of β phase decreases and grain boundary misorientation increases. Ti-15-3 alloy of imperfect structure represents better superplasticity after two-stage tensile test.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2006年第5期577-581,共5页
Chinese Journal of Rare Metals
基金
国家自然科学基金资助项目(50071027)
