中南大学学报（自然科学版）2016，Vol.47Issue(7)：2235-2241,7.DOI:10.11817/j.issn.1672-7207.2016.07.008
2219铝合金应力时效强度演变规律及其强化模型
Strength evolution rule and its model for stress aging of 2219 aluminum alloy
摘要
Abstract
The comparison experiment of stress relaxation aging and creep aging was carried out under the stress of 120−200 MPa at 175 ℃ aging for 18 h. The strength model of both stress relaxation aging and creep aging was established. The results show that the yield strength is affected not only by the reinforcement area of stress, but also by the high stress at the beginning of the aging stage through the test of mechanical properties. A linear relationship is found between the incremental difference of yield strength calculated based on the strength model of stress relaxation aging and creep aging under the condition of the same stress reinforcement area. So the evolution rule of strength during stress relaxation aging can be predicted by conducting the experiment of creep aging.关键词
应力松弛时效/蠕变时效/力学性能/强化模型/2219铝合金Key words
stress relaxation aging/creep aging/mechanical properties/strength model/2219 aluminum alloy分类
矿业与冶金引用本文复制引用
湛利华,张姣,贾树峰..2219铝合金应力时效强度演变规律及其强化模型[J].中南大学学报（自然科学版）,2016,47(7):2235-2241,7.基金项目
国家重点基础研究发展计划(973计划)项目(2014CB046602)；国家自然科学基金重点资助项目(51235010)；国家教育部博士点基金资助项目(20120162110003)(Project(2014CB046602) supported by the National Basic Research Development Program(973 Program) of China （973计划）
Project(51235010) supported by the Key Program of the National Natural Science Foundation of China （51235010）
Project(20120162110003) supported by the PhD Programs Foundation of Ministry of Education of China) （20120162110003）
