固溶时效处理对Al-4.0Cu-2.0Mg合金型材组织性能的影响  

Effect of solution and aging treatments on microstructure and property of Al-4.0Cu-2.0Mg aluminum alloy profile

作　　者：许晨玲[1] 王英君[1] 董晓林[1] 孙兰[1] 

机构地区：[1]东北轻合金有限责任公司,黑龙江哈尔滨150060

出　　处：《轻合金加工技术》2012年第9期45-48,共4页Light Alloy Fabrication Technology

摘　　要：试验研究了固溶温度、保温时间、淬火转移时间、冷却水温及自然时效对Al-4.0Cu-2.0Mg铝合金型材组织和性能的影响,确定了合理的热处理工艺制度。结果表明,固溶温度为(500±5)℃、保温时间在15 min～30 min为适宜;淬火转移时间在15 s以内,冷却水温控制在20℃以内时,合金无晶间腐蚀倾向;自然时效时间大于4 d(96 h)时,该合金型材性能趋于稳定。The effect of solution temperature, solution holding time, transfer time for quenching,temperature of cooling water and nature aging on microstructure and propertiy of A1-4.0Cu-2.0Mg aluminum alloy profile has been researched. The reasonable heating treat- ment system has been set up accordingly. The results show that the proper solution tempera- ture is （500 ±5）℃with 15 min-30 min holding time;transfer time for quenching is 15 s and less, and cooling water temperature is lower than 20℃ ;at these conditions no intergranular corrosion being happened. The properties of the alloy tend to be stable while the natural aging time beyond 4 days （96 h）.

关 键 词：Al-Cu—Mg合金 固溶 自然时效 

分 类 号：TG156.94[金属学及工艺—热处理]