摘要
采用硬铝LY12研究了超塑性形变工艺,得出:(1)预先以最佳超塑性应变速度形变30～100%,然后以1.67×10^(-3)s^(-1)速度继续变形;(2)预先以1.07×10^(-2)s^(-1)速度延伸25%,然后以最佳超塑性应变速度继续变形.两种工艺均可在获得较大超塑性延伸率的情况下,使超塑性成形速度提高一倍以上。
In This Paper superplastic deformation technologies of hard-aluminum alloy Ly12 has been studied. It was found that the rate ofsuperplatic forming can be enhanced significanfly and may even increaseby a factor of above 2 using the following two deformed technologies:(1) the first predeformetion is 30～100% at optimal superplastic strainrate and then continuously deforming at 1.67×1]^(-3)s(-1); (2) Pre-elongationis 25% at the rate of 1.07×10^(-2)s(-1) and then continuously deforming atoptimal superplastic strain rate.
出处
《湘潭大学自然科学学报》
CAS
CSCD
1992年第3期48-53,共6页
Natural Science Journal of Xiangtan University
