AlSi7MgBe合金半固态挤压成形件的热处理工艺  

Effects of Heat Treatment Parameters on Microstructure and Properties of Extruded Semi-solid AlSi7MgBe Alloy Parts

作　　者：赵大志[1] 路贵民[1] 张宇 崔建忠[1] 

机构地区：[1]东北大学材料电磁过程研究教育部重点实验室 [2]福建闽发铝业有限公司

出　　处：《特种铸造及有色合金》2007年第12期933-935,共3页Special Casting & Nonferrous Alloys

基　　金：教育部科学技术研究重点项目(106058);教育部博士点基金资助项目(20050145007);国家教育部新世纪优秀人才支持计划资助项目(NCET-04-0279)

摘　　要：采用正交设计方法,研究了固溶时效工艺参数对AlSi7MgBe合金半固态挤压成形件热处理性能的影响,通过对抗拉强度的测试,对热处理工艺进行了优化,结果表明:当545℃固溶4h,175℃时效11h,成形件具有最优力学性能σb=318MPa,δ5=15.24%,此时析出相弥散地分布在基体上。Effects of solid solution and aging parameters on properties of semi-solid AlSi7MgBe alloy parts have been examined by orthogonal testing.The processing parameters were optimized based on the measurement of tensile strength.The results show that the parts with desirable mechanical properties including tensile strength of 318 MPa and elongation of 15.24% can be produced with solid solution at 545 ℃ for 4 h and aging at 175 ℃ for 11 h,and the precipitates are dispersively distributed in the matrix.

关 键 词：AlSi7MgBe合金 半固态 触变成形 固溶时效 正交设计 

分 类 号：TG156[金属学及工艺—热处理]