摘要
运用XRD、金相显微镜、扫描电镜及力学性能测试,研究了添加不同含量的Sr、Y对A356铝合金显微组织和力学性能影响。结果表明,复合添加0.04%Sr和0.3%Y时,α-Al晶粒等效直径和二次枝晶间距值趋于稳定;抗拉强度和伸长率在此时达到最大值,分别为188.3MPa和7.2%。
The effects of adding different contents of Sr and Y on the microstructure and mechanical properties of A356aluminum alloy were studied by using XRD,metallographic microscope,scanning electron microscope and mechanical properties test.The results show that when adding 0.04%Sr and 0.3%Y into the alloy,the equivalent diameter of α-Al grains and the value of secondary dendrite spacing tend to be stable.The tensile strength and elongation reach the maximum at this time,which are 188.3MPa and 7.2%,respectively.
作者
孙彦华
张艺杰
杜景红
谭国寅
岳有成
冯炜光
SUN Yanhua;ZHANG Yijie;DU Jinghong;TAN Guoyin;YUE Youcheng;FENG Weiguang(Kunming Metallurgical Research Institute Company Limited,Kunming 650031,China;State Key Laboratory of Pressure Hydrometallurgical Technology of Associated Nonferrous Metal Resources,Kunming 650031,China;Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming 650093,China)
出处
《热加工工艺》
北大核心
2023年第17期48-51,共4页
Hot Working Technology
基金
云南省科技人才与平台计划项目(202105AD160020)
重大科技专项计划项目(202102AB080015)。
关键词
A356铝合金
复合变质剂
微观组织
力学性能
A356 aluminum alloy
compound modifier
microstructure
mechanical properties
作者简介
孙彦华(1977-),男,黑龙江富锦人,高级工程师,硕士,主要研究方向:材料深加工,电话:0871-65919682,E-mail:syh19771108@163.com。
