固溶时效对Al-0.2Ni铝合金组织和性能的影响  

Effects of Solution and Aging on Microstructure and Properties of Al-0.2Ni Aluminum Alloy

作　　者：王丽媛 李亨 胡越[1] 李明 张真[2,3] WANG Liyuan;LI Heng;HU Yue;LI Ming;ZHANG Zhen(Industry ＆ Equipment Technology Institute,Hefei University of Technology,Hefei 230009,China;State and Local Joint Engineering Research Center for Non-ferrous Metals and Processing Technology,Hefei University of Technology,Hefei 230009,China;Laboratories of Nonferrous Metal Material and Processing Engineering of Anhui Province,Hefei 230009,China)

机构地区：[1]合肥工业大学工业与装备技术研究院,安徽合肥230009 [2]合肥工业大学有色金属与加工技术国家地方联合工程研究中心,安徽合肥230009 [3]安徽省有色金属材料与加工工程实验室,安徽合肥230009

出　　处：《热加工工艺》2018年第16期226-229,共4页Hot Working Technology

基　　金：国家自然科学青年基金项目(JZ2016GJQN910);安徽省自然科学基金项目(JZ2015AKZR0061);高等学校博士学科点专项科研新教师基金项目(2013JYXJ0653)

摘　　要：通过硬度和导电率测量并采用金相显微镜、扫描电镜等分析技术,研究了不同固溶时效处理对Al-0.2Ni铝合金的组织和性能的影响。结果表明：Al-0.2Ni铝合金经600℃×12 h固溶＋250℃×10 h时效处理后的组织和硬度最好,在此工艺处理下,Al-0.2Ni合金的硬度和导电率分别是30.883 HV、62.16%IACS。在固溶处理时,粗大的含Ni初生相大部分回溶,晶粒未发生粗化。固溶后200~400℃时效处理,合金的硬度峰值随着时效温度的增高而先升后降,在250℃时效时,随着时效时间的延长,Al-0.2Ni合金的硬度先增后减,而导电率略有升高。The effects of different solution and aging treatment on the microstructure and properties Al-0.2 Ni aluminum alloys were studied by hardness and conductivity measurement and using optical microscopy and electronic microscopy. The results show that, microstructure and hardness Al-0.2 Ni aluminum alloy after solution at 600 ℃ for 12 h and then aging at 250℃ for 12 h are the best. Under this process, the hardness and conductivity of Al-0.2 Ni alloy are 30.883 HV and 62.16%IACS,respectively. During the solution treatment, most of the coarse primary phases containing Ni dissolve, and grain coarsening does not occur. After solid solution and aging treatment at 200-400 ℃, the hardness peak of the alloy increases firstly and then decreases with the increase of aging temperature. During the aging at 250℃, with the increase of aging time, the hardness of Al-0.2 Ni alloy firstly increases and then decreases, while the conductivity increases slightly.

关 键 词：AL-NI合金 固溶处理 时效 组织与性能 导电率 

分 类 号：TG166.3[金属学及工艺—热处理]