Grain Refinement and Mechanical Properties of AZ31 Alloy Processed by Pre-die Forging Extrusion at Different Temperatures

被引：2
作者：
Wang, Senwei [1 ]
Zhang, Kunming [1 ]
Ouyang, Sihui [1 ,2 ]
Du, Chengao [1 ]
Wu, Xiong [1 ]
Tang, Aitao [1 ,2 ]
She, Jia [1 ,2 ]
Pan, Fusheng [1 ,2 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing, Peoples R China
[2] Chongqing Univ, Natl Engn Res Ctr Mg Alloys, Chongqing, Peoples R China
来源：
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE | 2023年 / 32卷 / 23期
基金：
中国博士后科学基金; 中国国家自然科学基金;
关键词：
dynamic recrystallization; extrusion; grain refinement; magnesium alloy; MAGNESIUM ALLOY; MG ALLOYS; MICROSTRUCTURE; SUPERPLASTICITY; IMPROVEMENT; TEXTURE; DEFORMATION; DUCTILITY; BEHAVIOR; SHEETS;
D O I：
10.1007/s11665-023-07883-9
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
A Mg-3Al-1Zn (AZ31) alloy with highly homogeneous fine grains was fabricated using a simple extrusion method named pre-die forging extrusion (PFE). The strain induced by the pre-forging process resulted in crystal defects and a higher driving force for dynamic recrystallization. The grain size of AZ31 alloy was significantly refined to 1.74 mu m by using PFE for 60 s at 300 degrees C (300-60 s). The 300-60 s samples exhibited excellent mechanical properties of tensile yield strength of 305 MPa and elongation of 27%. The improvement in the mechanical properties of the PFE samples is mainly attributed to the grain refinement mechanism. An experimental basis for the appropriate temperature to refine the grains during extrusion is provided in this study.
引用
收藏
页码：10877 / 10884
页数：8
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