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High-speed extrusion of dilute Mg-Zn-Ca-Mn alloys and its effect on microstructure, texture and mechanical properties
Jiang, MG; Xu, C; Nakata, T; Yan, H; Chen, RS; Kamado, S; Chen, RS (reprint author), Chinese Acad Sci, Inst Met Res, Grp Magnesium Alloys & Their Applicat, 62 Wencui Rd, Shenyang 110016, Peoples R China.
2016-12-15
Source PublicationMATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN0921-5093
Volume678Pages:329-338
AbstractThree dilute Mg-Zn-Ca-Mn alloys were successfully extruded at 24 m/min and the alloy with lowest Zn content (0.21 wt%) can even be extruded at 60 m/min without any surface defects, which was ascribed to the thermally stable Mg2Ca phase and high solidus temperature (similar to 620 degrees C). The alloys extruded at die-exit speed >= 6 m/min showed a fully dynamically recrystallized (DRXed) microstructure and weak rare earth (RE) texture at the position between [2114] and [2112] parallel to the extrusion direction. Besides, fine Mg2Ca and alpha-Mn particles dynamically precipitated during extrusion, acting as effective pinning obstacles against the DRXed grain growth via Zener drag effect. Due to the deformation temperature rise with increasing extrusion speeds, the grain size increased gradually, which can be understood from the relationship between DRXed grain size and Zener-Hollomon parameter. The RE texture contributed to high uniform elongation of similar to 23%, but the increased grain size ( > 30 mu m) deteriorated post-uniform elongation due to the prevalence of {10 (1) over bar1} contraction and {10 (1) over bar1}-{10 (1) over bar2} double twins during post-uniform deformation.
description.department[jiang, m. g. ; yan, h. ; chen, r. s.] chinese acad sci, inst met res, grp magnesium alloys & their applicat, 62 wencui rd, shenyang 110016, peoples r china ; [jiang, m. g.] univ chinese acad sci, 19 yuquan rd, beijing 100049, peoples r china ; [xu, c. ; nakata, t. ; kamado, s.] nagaoka univ technol, dept mech engn, nagaoka, niigata 9402188, japan
KeywordMagnesium Alloy Extrusion Microstructure Texture Mechanical Properties
Subject AreaNanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationState Key Program of National Natural Science of China [51531002]; National Natural Science Foundation of China (NSFC) [51601193, 51301173]; National Key Research and Development Program of China [2016YFB0301104]; National Basic Research Program of China (973 Program) [2013CB632202]; JST, Advanced Low Carbon Technology Research and Development Program (ALCA) [12102886]; JSPS [16K18266]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/76153
Collection中国科学院金属研究所
Corresponding AuthorYan, H; Chen, RS (reprint author), Chinese Acad Sci, Inst Met Res, Grp Magnesium Alloys & Their Applicat, 62 Wencui Rd, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Jiang, MG,Xu, C,Nakata, T,et al. High-speed extrusion of dilute Mg-Zn-Ca-Mn alloys and its effect on microstructure, texture and mechanical properties[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2016,678:329-338.
APA Jiang, MG.,Xu, C.,Nakata, T.,Yan, H.,Chen, RS.,...&Chen, RS .(2016).High-speed extrusion of dilute Mg-Zn-Ca-Mn alloys and its effect on microstructure, texture and mechanical properties.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,678,329-338.
MLA Jiang, MG,et al."High-speed extrusion of dilute Mg-Zn-Ca-Mn alloys and its effect on microstructure, texture and mechanical properties".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 678(2016):329-338.
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