退火态Ti_2AlNb合金板材的超塑性变形行为  

Superplastic deformation behavior of annealed Ti_2AlNb alloy sheet

作　　者：王新[1] 卢斌[2] 王娟华[1] 王俭[1] 王红武[1] 陈永辉[1] 

机构地区：[1]宝鸡钛业股份有限公司,宝鸡721014 [2]中国科学院金属研究所,沈阳110016

出　　处：《中国有色金属学报》2010年第B10期289-292,共4页The Chinese Journal of Nonferrous Metals

摘　　要：研究退火态Ti_2AlNb合金热轧板材在温度为940～980℃和初始应变速率为8.33×10^(-4)～1×10^(-2)s^(-1)时的超塑变形行为。结果表明:该合金具有良好的超塑性;在本实验范围内,其最高伸长率可达400%,最佳超塑条件为960℃和1.67×10^(-3)s^(-1),可用作超塑性成形工艺制作复杂构件。The superplastic behavior of annealed Ti2AlNb based alloy sheets was investigated at temperature range of 940-980 ℃ and initiate strain rate range of 8.33×10^-4-1×10^-2 s^-1. The results show that the alloy exhibits good superplasticity. The maximum tensile elongation can reach up 400% at the temperature of 960 ℃ and the initiate strain rate of 1.67 × 10^-3 s^-1. Some complex parts will be formed by superplastic forming technology.

关 键 词：Ti2AlNb合金 超塑性 显微组织 变形行为 

分 类 号：TG146.2[一般工业技术—材料科学与工程]