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Ultra-high strength Mg-9Gd-4Y-0.5Zr alloy with bi-modal structure processed by traditional extrusion
Hong, M; Shah, SSA; Wu, D; Chen, RS; Du, XH; Hu, NT; Zhang, YF; Chen, RS (reprint author), Chinese Acad Sci, Grp Magnesium Alloys & Their Applicat, Inst Met Res, Shenyang 110016, Peoples R China.
2016-11-01
Source PublicationMETALS AND MATERIALS INTERNATIONAL
ISSN1598-9623
Volume22Issue:6Pages:1091-1097
AbstractIt is usual to observe that multi-scale structures can lead to combined strength and ductility both in aluminum alloys and steels, but related research has been seldom reported yet in magnesium alloys. In this study, applying traditional one step extrusion, we have successfully obtained a bimodal (Mg-9Gd-4Y-0.5Zr) alloy capable of ultra-high strength. The characterized sample reveal a bi-modal microstructure with two constitutions, i.e. stretched coarse-grain region with strong basal fiber texture and recrystallization fine-grain region. The bi-modal structured sample exhibit excellent mechanical properties with an ultimate strength 508 MPa and elongation 8% via 400 A degrees C extrusion and subsequently 200 A degrees C-60 h peak aging process. Ultra-high strength can be attributed to its strong extrusion texture in stretched coarse grains and dispersed nano-scale precipitates. This unique bimodal structure could be produced easily by one step extrusion, which is quite reliable and low costs in industrial applications of magnesium alloys with ultra-high strength as well as ideal ductility.
description.department[hong, m. ; shah, s. s. a. ; wu, d. ; chen, r. s.] chinese acad sci, grp magnesium alloys & their applicat, inst met res, shenyang 110016, peoples r china ; [hong, m. ; hu, n. t. ; zhang, y. f.] shanghai jiao tong univ, dept micro nano elect, key lab thin film & microfabricat, minist educ, shanghai 200240, peoples r china ; [du, x. h.] shenyang aerosp univ, sch mat sci & engn, shenyang 110136, peoples r china
KeywordMg-gd-y Alloy Ultra-high Strength Bi-modal Structure Extrusion Tensile Test
Subject AreaMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
Funding OrganizationNational Natural Science Foundation of China (NSFC) [51301173, 51531002]; National Basic Research Program of China (973 Program) [2013CB632202]
Indexed Bysci
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/76199
Collection中国科学院金属研究所
Corresponding AuthorWu, D; Chen, RS (reprint author), Chinese Acad Sci, Grp Magnesium Alloys & Their Applicat, Inst Met Res, Shenyang 110016, Peoples R China.
Recommended Citation
GB/T 7714
Hong, M,Shah, SSA,Wu, D,et al. Ultra-high strength Mg-9Gd-4Y-0.5Zr alloy with bi-modal structure processed by traditional extrusion[J]. METALS AND MATERIALS INTERNATIONAL,2016,22(6):1091-1097.
APA Hong, M.,Shah, SSA.,Wu, D.,Chen, RS.,Du, XH.,...&Chen, RS .(2016).Ultra-high strength Mg-9Gd-4Y-0.5Zr alloy with bi-modal structure processed by traditional extrusion.METALS AND MATERIALS INTERNATIONAL,22(6),1091-1097.
MLA Hong, M,et al."Ultra-high strength Mg-9Gd-4Y-0.5Zr alloy with bi-modal structure processed by traditional extrusion".METALS AND MATERIALS INTERNATIONAL 22.6(2016):1091-1097.
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