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
赵岭玉 1王妍 1吕宁 2魏健雄 2罗骏 3陈荣石2
作者信息
- 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
- 折叠
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22 μm细化至12 μm;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%.
Abstract
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 an-nealing at 300～350℃,and grain size refined from 22 μm to 12 μm.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 dur-ing 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Key words
magnesium alloys/annealing/recrystallization/texture/ductility引用本文复制引用
基金项目
国家自然科学基金(52301164)
辽宁省教育厅基本科研项目(JYTQN2023066)
湖南省自然科学基金(2023JJ50225)
沈阳理工大学引进高层次人才支持经费资助项目(2022)(1010147001123)
出版年
2024
NETL
NSTL
万方数据