Lanzhou University of Technology Institutional Repository (LUT_IR)
Effects of samarium addition on as-cast microstructure, grain refinement and mechanical properties of Mg-6Zn-0.4Zr magnesium alloy | |
Zhang Yu; Huang Xiaofeng; Li Ya; Ma Zhenduo; Ma Ying; Hao Yuan | |
2017-05 | |
发表期刊 | JOURNAL OF RARE EARTHS |
ISSN | 1002-0721 |
卷号 | 35期号:5页码:494-502 |
摘要 | In this paper, the microstructural evolution, grain refinement and mechanical properties of as-cast Mg-6Zn-0.4Zr alloys with varying Sm contents (0, 2 wt.%, 4 wt.% and 6 wt.%) were investigated by using an optical microscope (OM), a scanning electron microscope (SEM) equipped with energy dispersive spectroscope (EDS), an X-ray diffractometer (XRD) and mechanical tests at room temperature, respectively. The experimental results indicated that the addition of Sm could obviously refine the as-cast grains, modify the eutectic morphology and affect the mechanical properties of the alloys. The main phases in Mg-6Zn-xSm-0.4Zr alloys included matrix alpha-Mg, Mg2Zn3, Mg41Sm5 and MgZnSm. With Sm content increasing to 4%, the MgZnSm phase was created, meanwhile, the morphology of some eutectic phases revealed apparently lamellar structure, which had a bad effect on the mechanical properties. In addition, the maximum values of ultimate tensile strength (UTS, 214 MPa) and elongation (EL, 7.42%) were simultaneously obtained from the alloy with 2% Sm. However, Sm addition had no obvious effects on the fracture behavior of the alloys, namely, the fracture pattern of Mg-6Zn-0.4Zr alloy belonged to inter-granular and brittle modes while the fracture regimes of all the Sm-containing alloys were dominated by the mixture of inter-granular and trans-granular modes. |
关键词 | Mg-Zn-Zr magnesium alloy Sm addition microstructure grain refinement mechanical property fracture behavior rare earths |
DOI | 10.1016/S1002-0721(17)60939-6 |
收录类别 | SCI ; SCIE |
语种 | 英语 |
资助项目 | National Nature Science Foundations of China[51464032] ; National Basic Research Program of China[2010CB635106] |
WOS研究方向 | Chemistry |
WOS类目 | Chemistry, Applied |
WOS记录号 | WOS:000401090100012 |
出版者 | ELSEVIER SCIENCE BV |
EI入藏号 | 20171803624207 |
EI主题词 | Magnesium alloys |
EI分类号 | 531.2 Metallography - 542.2 Magnesium and Alloys - 546.3 Zinc and Alloys - 547.2 Rare Earth Metals - 708.3 Superconducting Materials - 801.4 Physical Chemistry - 804.2 Inorganic Compounds - 931.1 Mechanics - 951 Materials Science |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | https://ir.lut.edu.cn/handle/2XXMBERH/33273 |
专题 | 省部共建有色金属先进加工与再利用国家重点实验室 材料科学与工程学院 |
通讯作者 | Huang Xiaofeng |
作者单位 | Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China |
第一作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
通讯作者单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
第一作者的第一单位 | 省部共建有色金属先进加工与再利用国家重点实验室 |
推荐引用方式 GB/T 7714 | Zhang Yu,Huang Xiaofeng,Li Ya,et al. Effects of samarium addition on as-cast microstructure, grain refinement and mechanical properties of Mg-6Zn-0.4Zr magnesium alloy[J]. JOURNAL OF RARE EARTHS,2017,35(5):494-502. |
APA | Zhang Yu,Huang Xiaofeng,Li Ya,Ma Zhenduo,Ma Ying,&Hao Yuan.(2017).Effects of samarium addition on as-cast microstructure, grain refinement and mechanical properties of Mg-6Zn-0.4Zr magnesium alloy.JOURNAL OF RARE EARTHS,35(5),494-502. |
MLA | Zhang Yu,et al."Effects of samarium addition on as-cast microstructure, grain refinement and mechanical properties of Mg-6Zn-0.4Zr magnesium alloy".JOURNAL OF RARE EARTHS 35.5(2017):494-502. |
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