摘要
以国内某公司自主改进的非真空压铸AlSi10MnMg合金片状试样作为实验对象,研究不同的热处理制度对该合金组织和力学性能的影响。结果表明:非真空压铸件经高温固溶+淬火+人工时效处理后综合性能下降,容易发生弯曲变形和鼓泡现象。仅经低温时效处理的压铸件屈服强度和抗拉强度分别达到了251.8 MPa和327.1 MPa,较压铸态分别提高了42.6%和10.5%,断后伸长率则有所下降。经低温时效后合金析出的主要强化相为Mn_(6)Si和Mg_(2)Si相。
When nonvacuum die-casting AlSi10MnMg alloy samples developed by a domestic company were taken as the experimental objects, the effects of heat treatment on the microstructure and mechanical properties of the alloy were investigated. The results showed that the comprehensive performance of nonvacuum die castings decreased after high temperature solution-quenching-artificial aging treatment, and distortion and blistering were prone to occur in the castings. When the die-casting specimens were treated by low-temperature aging only, their yield strength and tensile strength reached 251.8 MPa and 327.1 MPa,respectively, which were 42.6% and 10.5% higher than those of the die-cast specimens, and the elongation after fracture decreased. The main strengthening phases that precipitated in the alloy after low-temperature aging treatments were the Mn_(6)Si and Mg_(2)Si phases.
作者
全泳琪
程汉明
王鹤睿
赵耀
林高用
QUAN Yongqi;CHENG Hanming;WANG Herui;ZHAO Yao;LIN Gaoyong(School of Materials Science and Engineering,Central South University,Changsha 410083,China;Jiangsu Nantong Hongjin Metal Aluminum Co.,Ltd.,Nantong 226000,Jiangsu,China)
出处
《有色金属科学与工程》
CAS
北大核心
2022年第2期98-106,共9页
Nonferrous Metals Science and Engineering
作者简介
通信作者:林高用(1966—),男,教授,博士生导师,主要从事材料加工方面的研究。E-mail:mater218@163.com。
