| Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy | |
| Cui, Jie1,2; Luo, Tianjiao2; Wang, Cong1,2; Li, Yingju2; Feng, Xiaohui2; Huang, Qiuyan2; Yang, Yuansheng2 | |
| Corresponding Author | Yang, Yuansheng(ysyang@imr.ac.cn) |
| 2020-10-09 | |
| Source Publication | ADVANCED ENGINEERING MATERIALS
 |
| ISSN | 1438-1656 |
| Pages | 8 |
| Abstract | The evolution of the microstructure and microsegregation in a new type of Mg-6Al-4Zn-1.2Sn (wt%) cast magnesium alloy solidified at cooling rates from 4.5 x 10(1) degrees C s(-1)to 2.3 x 10(3) degrees C s(-1)is investigated. The results indicate that the secondary dendrite arm spacing and the average grain sizes decrease from 14.3 to 2.9 mu m and from 187 to 78 mu m, respectively, as the cooling rate increases from 4.5 x 10(1) degrees C s(-1)to 2.3 x 10(3) degrees C s(-1). The relationship between the secondary dendrite arm spacing (lambda(2)) and cooling rate (R) is fitted as lambda(2) = 69.7 x R-0.42. When the alloy solidifies in the range of cooling rates, a new quasi-crystalline I phase is formed due to faster solidification. The microsegregation ratios of Al, Zn, and Sn elements decrease significantly with the increase in cooling rate. Compared with the specimen solidified at 4.5 x 10(1) degrees C s(-1), the microsegregation ratios of Al, Zn, and Sn of that solidified at a cooling rate of 2.3 x 10(3) degrees C s(-1)decrease by 37.4%, 45.7%, and 31.6%, respectively. |
| Keyword | grain refinement magnesium alloy microsegregation quasi-crystalline phase subrapid solidification |
| Funding Organization | National Key Research and Development Program of China |
| DOI | 10.1002/adem.202000583 |
| Indexed By | SCI |
| Language | 英语 |
| Funding Project | National Key Research and Development Program of China[2017YFB0103904] |
| WOS Research Area | Materials Science |
| WOS Subject | Materials Science, Multidisciplinary |
| WOS ID | WOS:000579286800001 |
| Publisher | WILEY-V C H VERLAG GMBH |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/140935 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Yang, Yuansheng |
| Affiliation | 1.Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| Recommended Citation GB/T 7714 | Cui, Jie,Luo, Tianjiao,Wang, Cong,et al. Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy[J]. ADVANCED ENGINEERING MATERIALS,2020:8. |
| APA | Cui, Jie.,Luo, Tianjiao.,Wang, Cong.,Li, Yingju.,Feng, Xiaohui.,...&Yang, Yuansheng.(2020).Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy.ADVANCED ENGINEERING MATERIALS,8. |
| MLA | Cui, Jie,et al."Evolution of the Microstructure and Microsegregation in Subrapidly Solidified Mg-6Al-4Zn-1.2Sn Magnesium Alloy".ADVANCED ENGINEERING MATERIALS (2020):8. |
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