The effect of Ca addition on microstructure and mechanical properties of extruded AZ31 alloys

被引：11
作者：
Song, Leipeng [1 ]
Lu, Yalin [1 ,2 ]
Zhang, Yang [1 ]
Li, Xingcheng [2 ]
Cong, Mengqi [2 ]
Xu, Wenting [1 ]
机构：
[1] Jiangsu Univ Technol, Sch Mat Engn, Changzhou 213001, Peoples R China
[2] Key Lab Adv Mat Design & Addit Mfg Jiangsu Prov, Changzhou 213001, Peoples R China
来源：
VACUUM | 2019年 / 168卷
基金：
中国国家自然科学基金;
关键词：
AZ31; alloys; Ca addition; Microstructure; Strengthening; SN-ZN ALLOY; TEXTURE EVOLUTION; MAGNESIUM ALLOY; GRAIN-SIZE; IMPROVEMENT; RECRYSTALLIZATION; DEFORMATION; ASYMMETRY; CALCIUM;
D O I：
10.1016/j.vacuum.2019.108822
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Evolution of microstructure and tensile properties of extruded AZ31 alloys through Ca addition have been systematically investigated in this paper. Results show that Al-Mn and Al2Ca phases scattered along extruding direction exist in extruded AZ31-xCa (0.5 and 1 wt%Ca) alloys. AZ31-1 wt%Ca alloys exhibit finer microstructure with mean grain size of similar to 2.79 mu m in comparison with AZ31-0.5 wt%Ca alloys, which is mainly related to the dynamic recrystallization (DRX) and the inhibition of grain coarsening by Al2Ca phase. In addition, the increased Ca content weakens the {0001} basal texture of extruded AZ31 alloys owing to the formation of Al2Ca phase. The comprehensive mechanical properties of extruded AZ31 alloys have an obvious improvement by adding Ca element owing to the grain refinement strengthening, second phase strengthening and texture strengthening.
引用
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页数：6
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