6063铝合金在线淬火试验及有限元模拟  

Experiment and finite element simulation of online quenching process for 6063 aluminum alloy

作　　者：陈彬[1] 高萌[1] 温柳[1] 潘学著 王迎新 王孟君[1] 

机构地区：[1]中南大学有色金属材料科学与工程教育部重点实验室,湖南长沙410083 [2]广亚铝业有限公司。广东佛山528237

出　　处：《轻合金加工技术》2012年第3期55-59,共5页Light Alloy Fabrication Technology

基　　金：广东省重大科技专项(2009A080205003)

摘　　要：通过淬火试验获得了6063铝合金的在线淬火冷却曲线,结合数值方法获得该合金的在线淬火换热系数,运用ABAQUS有限元软件动态模拟了其在线淬火过程。结果表明:喷水淬火初始阶段,换热系数较小,随着淬火温度降低,换热系数逐渐增大至峰值约47 kW/(m2.℃),随后又逐渐减小;有限元模拟获得的冷却曲线与实测冷却曲线基本吻合;淬火时试样的温度分布符合一维传热特征,轴向应力呈"内压外拉"状态,且无论是拉应力还是压应力都在淬火开始不久后出现峰值。The online quenching curve of 6063 aluminum alloy has been obtained. The thermo-transfer coefficient has been calculated by numerical method, and the online quench ing process has been dynamically simulated by using of FE software ABAQUS. The results indicate that the thermotransfer coefficient is low at the beginning of water quenching; the thermotransfer coefficient has been increased till get to the peak value of 47 kW/m2 ℃, and then the coefficient decreased; the cooling curve obtained by finite element simulation which can match that obtained on the production line; the quenching temperature distribution can fit with the characteristic of one dimension thermotransfer; the axial stress distribution morphology is ＂pressure inside, tension outside＂ ; the stress peak comes up at beginning of quenching no mater it is tension stress or pressure stress.

关 键 词：6063铝合金:在线淬火 换热系数 ABAQUS有限元模拟 

分 类 号：TG156.3[金属学及工艺—热处理]