有色金属科学与工程2024，Vol.15Issue(3)：392-399,431,9.DOI:10.13264/j.cnki.ysjskx.2024.03.009
双级时效工艺对QAl9-4铝青铜力学性能的影响
Effect of two-stage aging process on mechanical properties of QAl9-4 aluminum bronze alloy
摘要
Abstract
In this paper,the effects of the aging process on the microstructure and mechanical properties of QAl9-4 aluminum bronze alloy were investigated with orthogonal test.The results show that different process parameters have different effects on alloy properties,with the order of influence degree being second-order aging temperature>first-order aging temperature>first-order aging time>second-order aging time.The variance analysis of orthogonal test results showed that the optimal two-stage aging process was(150℃/2 h)+(500℃/2.5 h),and the alloy was treated by this process.Compared with the single-stage aging treatment,the compressive strength,ultimate compression ratio,and hardness of the alloy treated by the optimized two-stage aging process are increased by 14.79%,25.59%,and 5.28%,respectively.Finally,the microstructure characterization was performed on alloys treated under different aging processes.The results reveal that the differences in properties are attributed to the alloys after two-stage aging treatment containing more dispersed enhanced phases and fewer γ2 phases.Therefore,QAl9-4 aluminum bronze alloy can obtain better performance by two-stage aging treatment than that of single-stage aging treatment.关键词
铝青铜/抗压强度/双级时效/正交实验Key words
aluminum bronze alloy/compressive strength/two-stage aging/orthogonal test分类
矿业与冶金引用本文复制引用
宗林,赵鸿金,胡玉军,张兵,徐星星..双级时效工艺对QAl9-4铝青铜力学性能的影响[J].有色金属科学与工程,2024,15(3):392-399,431,9.基金项目
江西省教育厅科学技术研究项目(GJJ181176) （GJJ181176）
江西理工大学研究生创新专项资金项目(XY2021-S050) （XY2021-S050）
