轧制温度对AZ31镁合金组织与耐磨性的影响  

Effect of rolling temperature on microstructure and wear resistance of AZ31 magnesium alloy

作　　者：李庆芬[1] 邓彬[1,2] 吴远志 屈伟明[1] 刘先兰 向思诚 王柯[1] 尹浩屹 Li Qingfen;Deng Bin;Wu Yuanzhi;Qu Weiming;Liu Xianlan;Xiang Sicheng;Wang Ke;Yin Haoyi(School of Intelligent Manufacturing and Mechanical Engineering,Hunan Institute of Technology,Hengyang Hunan 421002,China;Research Institute of Auto Parts Technology,Hunan Institute of Technology,Hengyang Hunan 421002,China)

机构地区：[1]湖南工学院智能制造与机械工程学院,湖南衡阳421002 [2]湖南工学院汽车零部件技术研究院,湖南衡阳421002

出　　处：《金属热处理》2023年第6期58-62,共5页Heat Treatment of Metals

基　　金：国家自然科学基金(52171115);湖南省自然科学基金(2023JJ50109);湖南省科技创新计划(2021RC1008);衡阳市指导性计划(202222015981);大学生创新创业训练计划(S202211528066,202311528031,S202311528121)。

摘　　要：对固溶后的AZ31镁合金,在不同轧制温度(200、300和400℃)下进行轧制,研究轧制温度对AZ31合金组织与耐磨性的影响。结果表明,AZ31合金经轧制后组织均发生了完全再结晶,晶粒明显细化,组织中第二相分布更加均匀、细小。随轧制温度的升高,轧制态合金的晶粒与第二相尺寸增大,细晶强化与弥散强化作用减弱,硬度降低,热稳定性、耐磨性能下降,磨损机制由磨粒磨损向粘着磨损转变。AZ31 magnesium alloy after solution treatment was rolled at different rolling temperatures(200,300 and 400℃)to study the effect of rolling temperature on microstructure and wear resistance.The results show that the AZ31 alloy is completely recrystallized after rolling,and the grains are significantly refined,and the second phase is more uniformly and finely distributed.With the increase of rolling temperature,the grain and second phase sizes of the rolled alloy increase,the effect of fine grain strengthening and dispersion strengthening are weakened,the hardness decreases,the thermal stability and wear resistance decrease,and the wear mechanism changes from abrasive wear to adhesive wear.

关 键 词：AZ31镁合金 轧制温度 细化晶粒 第二相 耐磨性 

分 类 号：TG146.2[一般工业技术—材料科学与工程]