所属单位：机电学院
发表刊物：Zhongguo Youse Jinshu Xuebao
摘要：Hot forming test with synchronous cooling, metallographic and TEM observation and tensile test were performed to investigate the influence of hot forming with synchronous cooling operations on the microstructure evolution and strengthening mechanism of AA2024-H18 aluminum alloy. The results show that, the yield strength of hot formed AA2024 sheet with 96 h natural aging is 4%, which is superior to that of traditionally formed sheet, and meanwhile, the tensile strength is increased by 12%. Based on the microstructure observation and analysis, the strengthening is generated by the increase of the dislocation density and precipitation of some fine acicular particles in form of Al2CuMg (S'). The main strengthening mechanism of AA2024 aluminum alloy underwent hot forming with synchronous cooling is the pinning effect of dispersoid phase Al20Cu2Mn3(T) and precipitated phase Al2CuMg (S') on dislocation as well as the interaction of dislocation. © 2017, Science Press. All right reserved.
ISSN号：1004-0609
是否译文：否
发表时间：2017-07-01
合写作者：Chen, Guo-Liang,王宁,Sun, Jia-Wei
通讯作者：陈明和
发表时间：2017-07-01