湖南大学学报（自然科学版）2017，Vol.44Issue(6)：12-18,7.DOI:10.16339/j.cnki.hdxbzkb.2017.06.003
预变形对7N01铝合金力学性能及显微结构的影响
Effect of Pre-deformation on Mechanical Properties and Microstructure of 7N01 Alloys
摘要
Abstract
The effect of pre-deformation and ageing on mechanical properties and microstructure of 7N01 alloy was investigated by means of process optimization, mechanical property measurement and microstructure characterization.The results show that, compared with single deformation and aging treatment, a suitable combination of pre-deformation and thermal aging can significantly improve the mechanical properties of the material.In this study, sample processed with a 10% pre-deformation and followed by 120 ℃ aging treatment had the best mechanical property with 430 MPa yield stress and 470 MPa tensile strength, respectively.Meanwhile, the elongation still maintained as 14%.The dislocation introduced during pre-deformation played a key role on the types, size and distribution of precipitates in the subsequent aging treatment, which affected the final mechanical properties of the alloys.关键词
7N01铝合金/预变形/时效/位错/析出相Key words
7N01 alloy/pre-deformation/ageing/dislocation/precipitation分类
矿业与冶金引用本文复制引用
陈江华,赵甜甜,余雄伟,杨修波,高珍,伍翠兰,饶栋..预变形对7N01铝合金力学性能及显微结构的影响[J].湖南大学学报（自然科学版）,2017,44(6):12-18,7.基金项目
国家自然科学基金资助项目(51171063,51471067,51371081,51501059),National Natural Science Foundation of China(51171063,51471067,51371081,51501059) （51171063,51471067,51371081,51501059）
