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Evolution of local texture and its effect on mechanical properties and fracture behavior of friction stir welded joint of extruded Mg-3A1-1Zn alloy
Shang, Q.; Ni, D. R.; Xue, P.; Xiao, B. L.; Ma, Z. Y.; Ni, DR (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
2017-06-01
发表期刊MATERIALS CHARACTERIZATION
ISSN1044-5803
卷号128页码:14-22
摘要For the wrought Mg alloys, the strong texture may greatly affect their fracture behavior and mechanical property. In the present study, a single plate of extruded AZ31 alloy was subjected to friction stir welding at different tilt angles relative to the extrusion direction, with the aim to investigate the evolution of local texture in the weld as well as its effect on the mechanical behavior of the joint. The results showed that the formation of specific-textured nugget zone and prevalent twinning activated at low strain brought about the reduction of yield anisotropy in the tensile test Relatively higher elongation of the joints was achieved with the welding direction aligned at 45 to the extrusion direction. The fracture locations were observed to occur in different regions and shift with the variation of the welding direction, which was mainly attributed to the strain localization induced by incompatible deformation of different sub-regions. EBSD analyses indicated that the microstructure and texture evolution in both the nugget zone and the thermo-mechanically affected zone played a vital role in the inconsistent deformation behavior. (C) 2017 Elsevier Inc All rights reserved.; For the wrought Mg alloys, the strong texture may greatly affect their fracture behavior and mechanical property. In the present study, a single plate of extruded AZ31 alloy was subjected to friction stir welding at different tilt angles relative to the extrusion direction, with the aim to investigate the evolution of local texture in the weld as well as its effect on the mechanical behavior of the joint. The results showed that the formation of specific-textured nugget zone and prevalent twinning activated at low strain brought about the reduction of yield anisotropy in the tensile test Relatively higher elongation of the joints was achieved with the welding direction aligned at 45 to the extrusion direction. The fracture locations were observed to occur in different regions and shift with the variation of the welding direction, which was mainly attributed to the strain localization induced by incompatible deformation of different sub-regions. EBSD analyses indicated that the microstructure and texture evolution in both the nugget zone and the thermo-mechanically affected zone played a vital role in the inconsistent deformation behavior. (C) 2017 Elsevier Inc All rights reserved.
部门归属[shang, q. ; ni, d. r. ; xue, p. ; xiao, b. l. ; ma, z. y.] chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china ; [shang, q.] univ sci & technol china, sch mat sci & engn, hefei, peoples r china
关键词Ebsd Magnesium Alloy Welding Mechanical Property Texture Fracture
学科领域Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering ; Materials Science, Characterization & Testing
资助者National Natural Science Foundation of China [51371179, 51331008]
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/78096
专题中国科学院金属研究所
通讯作者Ni, DR (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Shang, Q.,Ni, D. R.,Xue, P.,et al. Evolution of local texture and its effect on mechanical properties and fracture behavior of friction stir welded joint of extruded Mg-3A1-1Zn alloy[J]. MATERIALS CHARACTERIZATION,2017,128:14-22.
APA Shang, Q.,Ni, D. R.,Xue, P.,Xiao, B. L.,Ma, Z. Y.,&Ni, DR .(2017).Evolution of local texture and its effect on mechanical properties and fracture behavior of friction stir welded joint of extruded Mg-3A1-1Zn alloy.MATERIALS CHARACTERIZATION,128,14-22.
MLA Shang, Q.,et al."Evolution of local texture and its effect on mechanical properties and fracture behavior of friction stir welded joint of extruded Mg-3A1-1Zn alloy".MATERIALS CHARACTERIZATION 128(2017):14-22.
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