Novel continuous forging extrusion in a one-step extrusion process for bulk ultrafine magnesium alloy

被引：29
|
作者：
Peng, Peng [1 ]
She, Jia [1 ,2 ]
Tang, Aitao [1 ,2 ]
Zhang, Jianyue [3 ]
Zhou, Shibo [1 ]
Xiong, Xiao [1 ]
Pan, Fusheng [1 ,2 ,4 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
[3] Purdue Univ, Sch Engn Technol, W Lafayette, IN 47906 USA
[4] Chongqing Acad Sci & Technol, Chongqing 401123, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2019年 / 764卷
基金：
中国国家自然科学基金;
关键词：
Magnesium alloy; Extrusion; Dynamic recrystallization; MECHANICAL-PROPERTIES; HIGH-STRENGTH; DYNAMIC RECRYSTALLIZATION; CYCLIC EXTRUSION; MG-3AL-1ZN ALLOY; AZ31; ALLOY; DUCTILITY; MG; MICROSTRUCTURE; TEMPERATURE;
D O I：
10.1016/j.msea.2019.138144
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Highly-uniform ultrafine Mg-3Al-1Zn alloy was successfully fabricated by a simple conventional extrusion method called continuous forging extrusion (CFE). After CFE, the average grain size of Mg-3Al-1Zn alloy was refined to 0.6 mu m. The ultra-fine grain (UFG) AZ31 alloy exhibited an excellent combination of yield strength of 307 MPa and ductility of 26.3%. The improved mechanical properties were mainly attributed to grain boundary strengthening and texture weakening. The formation of dynamic recrystallized submicron grain in the CFE was also discussed.
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页数：6
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