挤压速度及淬火方式对Al-Mg-Si合金组织及性能的影响  

Effect of extrusion speed and quenching methods on the microstructure and property of Al-Mg-Si alloy

作　　者：向晶 杨海峰 赵茂密[1] 黄智 宋丰轩 XIANG Jing;YANG Haifeng;ZHAO Maomi;HUANG Zhi;SONG Fengxuan(Guangxi Academy of marine Sciences,Guangxi Academy of Sciences,Nanning 530007;Guangxi Hongrui Technology Co.,Ltd.,Baise 533000;Guilin Hesheng Experimental Equipment Co.,Ltd.,Guilin 541000;Guangxi University of Electric Power,Nanning 530007,China)

机构地区：[1]广西科学院广西海洋科学院,南宁530007 [2]广西宏锐科技有限公司,广西百色533000 [3]桂林合盛实验设备有限公司,广西桂林541000 [4]广西电力职业技术学院,南宁530007

出　　处：《铝加工》2025年第2期21-24,共4页Aluminium Fabrication

基　　金：中央引导地方科技发展资金项目(桂科ZY24212052);广西科技计划项目(桂科AB24010250);广西重大专项(桂科AA24263064、桂科AA24263075)。

摘　　要：对Al-Mg-Si合金型材进行了不同挤压速度及淬火方式(在线风冷淬火、在线水冷淬火和离线水冷淬火)的对比试验。采用光学显微镜对型材横截面显微组织进行观察,应用电子万能试验机对型材试样进行拉伸试验。结果表明:挤压速度越快,型材淬火后力学性能越高,但型材表层粗晶层越厚;离线水冷淬火后,型材粗晶层规律与在线淬火型材一致,同时型材的力学性能均值以及均匀性都优于在线淬火。Al-Mg-Si alloy profiles were tested with different extrusion speeds and quenching methods(on-line air-cooled quenching,online water-cooled quenching and off-line water-cooled quenching).The cross section microstructure was observed by optical microscope,and the tensile test was carried out by electronic universal testing machine.The results show that the faster the extrusion speed,the higher the mechanical property after quenching,but the thicker the surface layer of coarse grain.After off-line watercooled queching,the coarse grain layer rule of profiles is consistent with that of on-line queched profiles,and the average mechanical property and uniformity of profiles are better than that of on-line quenching.

关 键 词：AL-MG-SI合金 挤压速度 淬火方式 力学性能 粗晶层 

分 类 号：TG146.21[一般工业技术—材料科学与工程]