| Coalescence-dominated microstructure evolution during solidification of 20SiMn steel | |
| Ma, Xiao-ping; Li, Dian-zhong | |
| Corresponding Author | Ma, Xiao-ping(xpma@imr.ac.cn) |
| 2020-05-01 | |
| Source Publication | JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL
 |
| ISSN | 1006-706X |
| Volume | 27Issue:5Pages:506-516 |
| Abstract | The evolution of microstructures during the solidification of 20SiMn steel was investigated. The dominant role of coalescence was revealed by analyzing the quenched microstructures and the solute distribution. In the parameter range investigated, including the slow solidification, the fast solidification and the directional solidification, the coalescence can happen at multiple solidification stages and on multi-scales. During the directional solidification, the ternary and fourth dendritic arms coalesce into the secondary dendritic arms, and the secondary dendritic arms further coalesce to produce the cellular crystals. The cellular crystals become coarse through further coalescence. During the non-directional solidification, the initial microstructures are discrete crystals without the dendritic pattern. Both the dendritic arms and dendritic stems appearing in the later solidification stage are produced by the coalescence on multi-scales. The coalescence is more significant in the later solidification stage. The mechanism of coalescence is attributed to different melt compositions in different local domains and the reduction of the interface energy. |
| Keyword | Solidification Microstructure Coalescence Steel Microsegregation |
| DOI | 10.1007/s42243-019-00311-0 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Research Area | Metallurgy & Metallurgical Engineering |
| WOS Subject | Metallurgy & Metallurgical Engineering |
| WOS ID | WOS:000531155800003 |
| Publisher | SPRINGER |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.imr.ac.cn/handle/321006/138776 |
| Collection | 中国科学院金属研究所 |
| Corresponding Author | Ma, Xiao-ping |
| Affiliation | Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China |
| Recommended Citation GB/T 7714 | Ma, Xiao-ping,Li, Dian-zhong. Coalescence-dominated microstructure evolution during solidification of 20SiMn steel[J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,2020,27(5):506-516. |
| APA | Ma, Xiao-ping,&Li, Dian-zhong.(2020).Coalescence-dominated microstructure evolution during solidification of 20SiMn steel.JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL,27(5),506-516. |
| MLA | Ma, Xiao-ping,et al."Coalescence-dominated microstructure evolution during solidification of 20SiMn steel".JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL 27.5(2020):506-516. |
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