退火对热轧Mg‑1.3Zn‑0.15Ca合金组织、织构和力学性能的影响  

The effect of annealing on the microstructure,texture and mechanical properties of hot‑rolled Mg‑1.3Zn‑0.15Ca sheet

作　　者：赵岭玉 王妍 吕宁 魏健雄 罗骏 陈荣石[2] ZHAO Lingyu;WANG Yan;LÜNing;WEI Jianxiong;LUO Jun;CHEN Rongshi(School of Materials Science and Engineering,Shenyang Ligong University,Shenyang 110159,China;Shi‑changxu Innovation Center for Advanced Materials,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;School of Mechanical Engineering,Hunan Institute of Engineering,Xiangtan 411104,China)

机构地区：[1]沈阳理工大学材料科学与工程学院,辽宁沈阳110159 [2]中国科学院金属研究所师昌绪先进材料创新中心,辽宁沈阳110016 [3]湖南工程学院机械工程学院,湖南湘潭411104

出　　处：《现代交通与冶金材料》2024年第3期44-49,57,共7页Modern Transportation and Metallurgical Materials

基　　金：国家自然科学基金资助项目(52301164);辽宁省教育厅基本科研项目(JYTQN2023066);湖南省自然科学基金资助项目(2023JJ50225);沈阳理工大学2022年引进高层次人才支持经费资助项目(1010147001123)。

摘　　要：将热轧Mg‑1.3Zn‑0.15Ca(质量分数)合金板材在不同温度下退火1 h,研究板材在轧态和不同退火态的微观组织、织构和力学性能。结果表明:板材变形组织在300~350℃退火后转变为完全再结晶组织,晶粒由22μm细化至12μm;板材在轧态时为弱基面三峰织构,随退火温度升高,基面织构组分消失,c轴向TD的偏转角度增加,最终转变为非基面三峰织构;板材显微硬度在退火过程中先迅速下降后几乎不变,由73 HV下降至45 HV;350℃退火后,板材室温塑性显著提高,断裂伸长率达到28%。The microstructure,texture and mechanical properties of hot-rolled Mg-1.3Zn-0.15Ca(mass fraction)alloy sheet in both rolled and annealed states are studied.The results show that the rolled deformation microstructure transforms into a completely recrystallized microstructure after annealing at 300~350℃,and grain size refined from 22μm to 12μm.The rolled sheet exhibits a weak basal texture with three peaks.As the annealing temperature increases,the basal texture component disappears,tilting angle towards TD increases,and an annealed non-basal texture with three peaks forms.The micro-hardness of the sheet first rapidly decreases and then remains almost unchanged during the annealing process,decreasing from 73 HV to 45 HV.After annealing at 350℃,the elongation after fracture of the sheet has significantly increased,reaching 28%.

关 键 词：镁合金 退火 再结晶 织构 塑性 

分 类 号：TG146.22[一般工业技术—材料科学与工程] TG156.2[金属学及工艺—金属材料]