摘要
本文通过一种ECAP-Conform技术,经过多道次挤压及后续热处理工艺,研究了其对纯铝的热稳定性和织构的影响。结果表明:ECAP-Conform挤压1道次后,纯铝晶粒细化明显,强度和硬度明显增大,塑性明显降低,2道次后,晶粒变化不明显,纯铝的机械性能变化不大;纯铝经ECAP-Conform变形,具有一定的热稳定性,挤压4道次后温度超过200℃以后,纯铝硬度才明显下降;经ECAP-Conform变形,纯铝的各向异性程度大为降低。
The impact of the ＇ECAP-Conform technique on the thermal stability and texture of pure aluminum after multi-pass extrusion and heat treatment process has been studied in this paper. The results show that after one ECAP deformation pass, aluminum grains are refined obviously, strength and hardness are significantly increased, plastic is significantly reduced; after two ECAP deformation passes, the grains aren＇t changed obviously, mechanical properties of pure aluminum aren＇t changed obviously. By ECAP-Conform deformation, thermal stability of pure aluminum is increased, and after four ECAP deformation passes, when the heating temperature exceeds 200℃, the hardness of pure aluminum is greatly decreased. After ECAP- Conform deformation, the dearee of anisotropv of pure aluminum is areatlv reduced.
出处
《有色金属加工》
CAS
2013年第5期11-15,共5页
Nonferrous Metals Processing
关键词
连续ECAP
纯铝
热稳定性
织构
组织性能
continuous equal channel angular pressing （ECAP） technique
pure aluminum
thermal stability
texture
structure property
