2219铝合金应力时效强度演变规律及其强化模型OA北大核心CSCDCSTPCD
Strength evolution rule and its model for stress aging of 2219 aluminum alloy
在时效温度为175℃，时效时间为18 h时，开展不同应力水平(120~200 MPa)条件下的应力松弛时效与蠕变时效对比实验。建立应力松弛时效与蠕变时效强化模型，对强化模型进行验证与分析。研究结果表明：合金的屈服强度不仅受应力强化作用面积的影响，而且在时效初期阶段高应力作用对合金的屈服强度产生重要影响；在相同应力强化作用面积条件下，分别由应力松弛时效强化模型与蠕变时效强化模型计算的屈服强度增量差值与应力强化作用面积之间存在一定的线性关系，可以通过…查看全部>>
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…查看全部>>
湛利华;张姣;贾树峰
中南大学 机电工程学院，高性能复杂制造国家重点实验室，湖南 长沙，410083中南大学 机电工程学院，高性能复杂制造国家重点实验室，湖南 长沙，410083中南大学 机电工程学院，高性能复杂制造国家重点实验室，湖南 长沙，410083
矿业与冶金
应力松弛时效蠕变时效力学性能强化模型2219铝合金
stress relaxation agingcreep agingmechanical propertiesstrength model2219 aluminum alloy
《中南大学学报（自然科学版）》 2016 (7)
2235-2241,7
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 Project(51235010) supported by the Key Program of the National Natural Science Foundation of ChinaProject(20120162110003) supported by the PhD Programs Foundation of Ministry of Education of China)