| Phase Constitution and Tensile Properties of Semi-continuous Cast Mg-6Al-6Zn-3Sn-1Y-0.5Mn Alloy at Casting State and Heat Treatment State | |
| Zhou Jixue1; Ma Baichang1; Wang Jinwei1; Tang Shouqiu1; Yang Yuansheng2 | |
| Corresponding Author | Ma Baichang(mabch@sdas.org) |
| 2019-07-01 | |
| Source Publication | RARE METAL MATERIALS AND ENGINEERING
 |
| ISSN | 1002-185X |
| Volume | 48Issue:7Pages:2258-2265 |
| Abstract | The phase constitution, tensile properties and failure mechanism during tensile process of as-cast, as-solutioned and as-aged samples of a Mg-6Al-6Zn-3Sn-1Y-0.5Mn (AZTYM66310) magnesium alloy were investigated. The microstructure of semi continuous cast AZTYM66310 alloy is distributed nonuniformly. The dendrite is finer and the second phase distribution is more dispersed from the edge to the centre of the ingot, when the solidification rate is increased. The alpha-Mg primaries in the microstructure of as-cast AZTYM66310 alloy exhibit typical equiaxed dendrites morphology, and a large number of interdendritic phases form during solidification, including Mg + Mg-32(Al, Zn)(49) eutectic, Mg2Sn divorced eutectic phases, Al2Y phases and Al8Mn4Y phases. After the solution treatment of 380 degrees C/6 h, the majority of Mg-32(Al, Zn)(49) phases and part of Mg2Sn phases are dissolved into the matrix, increasing the contents of Al, Zn and Sn in the matrix significantly, while Al2Y phase and Al8Mn4Y phase do not change remarkably. Solution treatment significantly improves the tensile strength and the elongation of the alloy. After aging treatment of 380 degrees C/6 h + 150 degrees C /16 h, a large number of nano-scaled particle reinforced phases precipitate in the alloy, especially near the grain boundary, increasing the yield strength to 187.4 MPa. During the tensile process of the alloy, the second phases in the structure first break or separate from the matrix, resulting in the generation of microcracks. And then these microcracks propagate along the grain boundaries, eventually causing the sample to fracture. |
| Keyword | AZTYM66310 magnesium alloy semi-continuous casting phase constitution tensile properties heat treatment |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Materials Science ; Metallurgy & Metallurgical Engineering |
| WOS Subject | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000480493400032 |
| Publisher | NORTHWEST INST NONFERROUS METAL RESEARCH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/134880 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ma Baichang |
| Affiliation | 1.Qilu Univ Technol, Shandong Acad Sci, Adv Mat Inst, Shandong Prov Key Lab High Strength Lightweight M, Jinan 250014, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Zhou Jixue,Ma Baichang,Wang Jinwei,et al. Phase Constitution and Tensile Properties of Semi-continuous Cast Mg-6Al-6Zn-3Sn-1Y-0.5Mn Alloy at Casting State and Heat Treatment State[J]. RARE METAL MATERIALS AND ENGINEERING,2019,48(7):2258-2265. |
| APA | Zhou Jixue,Ma Baichang,Wang Jinwei,Tang Shouqiu,&Yang Yuansheng.(2019).Phase Constitution and Tensile Properties of Semi-continuous Cast Mg-6Al-6Zn-3Sn-1Y-0.5Mn Alloy at Casting State and Heat Treatment State.RARE METAL MATERIALS AND ENGINEERING,48(7),2258-2265. |
| MLA | Zhou Jixue,et al."Phase Constitution and Tensile Properties of Semi-continuous Cast Mg-6Al-6Zn-3Sn-1Y-0.5Mn Alloy at Casting State and Heat Treatment State".RARE METAL MATERIALS AND ENGINEERING 48.7(2019):2258-2265. |
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