升温固溶对Al-Zn-Mg-Cu合金组织与力学性能的影响

来源期刊：中南大学学报(自然科学版)2000年第4期

论文作者：陈康华 刘红卫 刘允中

文章页码：339 - 341

关键词：铝合金;固溶;组织;力学性能;第二相

Key words：aluminum alloy; solution; microstructure; mechanical properties; second phases

摘    要：研究了7075合金升温固溶处理过程.结果表明:升温处理可使极限固溶温度高于多相共晶温度,同时能避免过烧组织的形成,有效强化了残余结晶相的固溶,显著提高了7075合金的力学性能.通过强化固溶,7075合金的断裂和屈服强度可达660 MPa和606 MPa.

Abstract: The temperature-incremental solution heat treatment of 7075 alloy was investigated to elevate the solution temperature limit for enhancing the solution of the soluble remaining constituents. It was discovered that temperature-incremental treatment can make the limit solution temperature higher than the multi-phase eutectic temperature without the formation of overheated structure, effectively enhance the solution and improve the mechanical properties of the 7075 alloy. By the enhanced solution, the yield strength and ultimate tensile strength of 7075 alloyrise to 606MPa and 660MPa respectively.