摘要
采用自制的Hopkinson拉杆装置，研究了微量硼对形变Ti—47Al—2Mn—2Nb合金在20—1000S－1应变速率范围内的拉伸性能的影响；发现添加1．0％B（原子分数）能明显提高其动态拉伸强度，不破坏动态拉伸强度与应变速率之间的线性关系，但对其动态拉伸塑性无明显的改善作用，对动态断裂方式也无明显影响.
The effect of minor boron addition on tensile properties of wrought Ti-47Al-2Mn-2Nb alloy was investigated at strain rates from 20 to 1000s-1 , using a self-made separated Hopkinson tensile bar setup. It was found that the addition of 1.0%B (atom fraction) increases dynamic tensile strength considerably, but does not damage the linear relationship between dynamic tenisle strength and the strain rate. Meanwhile, the addition produces neither obvious improvement on dynamic tensile ductility nor noteworthy change in fracture mode.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1998年第9期915-918,共4页
Acta Metallurgica Sinica
