AZ31镁合金循环冷轧及退火的组织和织构演变

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• 英文论文题名：Microstructure and texture evolutions of magnesium alloy AZ31 during repeated cold rolling and subsequent annealing
• 论文作者：胡维 ; 孟利 ; 李萧 ; 陈冷
• 英文论文作者：HU Wei ; MENG Li ; LI Xiao ; CHEN Leng ; School of Materials Science and Engineering ; University of Science and Technology Beijing ; Central Iron & Steel Research Institute ; Institute of Engineering Technology ; University of Science and Technology Beijing
• 年：2016
• 作者机构：北京科技大学材料科学与工程学院;钢铁研究总院;北京科技大学工程技术研究院;
• 论文关键词：镁合金 ; 循环冷轧 ; 退火 ; 晶粒细化
• 英文论文关键词：Magnesium alloy ; repeated cold rolling ; annealing ; grain refinement
• 会议召开时间：2016-08-16
• 会议录名称：第十届全国材料科学与图像科技学术会议暨校地企产学研合作创新论坛论文摘要集
• 语种：中文
• 分类号：TG146.22;TG339;TG166.4
• 学会代码：EGTA
• 会议名称：第十届全国材料科学与图像科技学术会议暨校地企产学研合作创新论坛
• 会议地点：中国河南洛阳
• 主办单位：中国体视学学会材料科学分会、中国金属学会材料科学分会
• 学会名称：中国体视学学会
• 页数：9
• 文件大小：5218k
• 原文格式：O
• 会议级别：全国

摘要

变形镁合金通常形成较强单一性的织构,影响镁合金的深加工和应用,弱化织构强度及细化晶粒尺寸是有效的解决途径之一。本文对热挤压AZ31镁合金板材进行循环冷轧和退火处理,研究了该过程中的显微组织和织构演变,结果表明:4次循环处理使得平均晶粒尺寸从~52μm降低到~10μm,织构由初始的柱面织构转变为低强度的基面织构。压缩孪生与再结晶的交替作用促进了晶粒细化及基面织构漫散。
Wrought magnesium usually has a strong monistic texture and thus their deep processing and applications are extremely restricted.Weaking the texture intensity and refining the grain size simultaneously is one of solutions to improve the room temperature workability of AZ31 alloy sheet.The sheets were processed by repeated cold rolling and subsequent annealing using a small pass reduction.The evolution of microstructure and texture during these processes were investigated.Results show that the average grain size was refined from about 52μm to about 10 μm after 4 times repeated processes,the texture component changed from prismatic to basal texture with the intensity decreased.The grain refinement and weakened texture are ascribed to the alternating effect of compression twin and recrystallization.

引文

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