Development of a new magnesium alloy ZW21
Chen, T. J.; Wang, W.; Zhang, D. H.; Ma, Y.; Hao, Y.
2013-02
发表期刊MATERIALS & DESIGN
ISSN0264-1275
卷号44页码:555-565
摘要A new magnesium alloy named ZW21 has been developed through orthogonal experiment method and the effects of heat treatment on the alloy's tensile properties have also been investigated. The results indicate that the alloy only has one Mg-Zn-Y(Nd) phase of Mg3Zn3(Y, Nd)(2) (named W phase) and has higher mechanical properties, lower cost and lighter weight compared with the other congeneric alloys. Its microstructure is composed of small equiaxed dendrites and interdendritic discontinuous net-like eutectic structures. The eutectic structures appear in divorced W phase laths in the thin regions between the dendrites and in regular W + alpha-Mg lamellar structures in the triangle regions. The eutectic structures, especially the W phase, with such distribution are harmful to the tensile properties and thus proper heat treatment can improve its properties through changing the W phase distribution. Solution treatment at 525 degrees C for 4 h (T-4 treatment) increases the elongation from 17.75% to 26.5%. Subsequent ageing treatment at 250 degrees C for 24 h (T-6 treatment) improves the ultimate tensile strength from 210 MPa to 243 MPa. The fracture modes of the as-cast, T-4- and T-6-treated alloys all obey the quasi-cleavage regime. The fracture of the as-cast alloy belongs to a mixed mode of intergranular and transgranular forms, but those of the T-4- and T-6-treated alloys follow the transgranular mode due to the relatively high bonding strength between the grains. (C) 2012 Elsevier Ltd. All rights reserved.
关键词Non-ferrous metals and alloys Mechanical Microstructure
DOI10.1016/j.matdes.2012.08.040
收录类别SCI ; SCIE
语种英语
资助项目National Basic Research Program of China[G2010CB635106] ; Program for New Century Excellent Talents in University of China[NCET-10-0023]
WOS研究方向Materials Science
WOS类目Materials Science, Multidisciplinary
WOS记录号WOS:000310572200068
出版者ELSEVIER SCI LTD
EI入藏号20132516440098
EI主题词Magnesium alloys
EI分类号408 Structural Design - 531.2 Metallography - 537.1 Heat Treatment Processes - 542.2 Magnesium and Alloys - 801.4 Physical Chemistry - 951 Materials Science
引用统计
被引频次:17[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符https://ir.lut.edu.cn/handle/2XXMBERH/34749
专题材料科学与工程学院
通讯作者Chen, T. J.
作者单位Lanzhou Univ Technol, Key Lab Gansu Adv Nonferrous Met Mat, Lanzhou 730050, Peoples R China
第一作者单位材料科学与工程学院
通讯作者单位材料科学与工程学院
第一作者的第一单位材料科学与工程学院
推荐引用方式
GB/T 7714
Chen, T. J.,Wang, W.,Zhang, D. H.,et al. Development of a new magnesium alloy ZW21[J]. MATERIALS & DESIGN,2013,44:555-565.
APA Chen, T. J.,Wang, W.,Zhang, D. H.,Ma, Y.,&Hao, Y..(2013).Development of a new magnesium alloy ZW21.MATERIALS & DESIGN,44,555-565.
MLA Chen, T. J.,et al."Development of a new magnesium alloy ZW21".MATERIALS & DESIGN 44(2013):555-565.
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