IMR OpenIR
Heterogeneous strip originated from the separate enriched melt: Innate character and physical mechanism
Ma, Xiaoping; Li, Dianzhong; Ma, XP (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Materials Sci, Shenyang 110016, Peoples R China.
2016-07-01
发表期刊INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
ISSN0017-9310
卷号98页码:558-567
摘要The chemical heterogeneity, well-known as macrosegregation, is a major problem in the casting of steel ingots. Most heterogeneity generally originated from the solute partition and solute distribution in the solidification process with interdendritic convection. In this article, a new heterogeneous phenomenon originated from the movement of separate enriched melt is discovered in a steel ingot. A strip characterized as ferrite chains and MnS chains is revealed by macro-etching. The formation mechanism for the heterogeneous strip is proposed. In the mushy zone of the ingot, a large amount of separate S-enriched melts move laterally and upwards. Some S-enriched melts will remain in the moving trace. Such residual S-enriched melts produce a large amount of MnS inclusion chains. In the subsequent solid phase transition process, promoted by the MnS chains, ferrite prefers to be transited from the austenite near the MnS inclusions and shows as a large amount of separate ferrite chains. A large amount of ferrite chains align in a strip-like zone, which results in the heterogeneous strip phenomenon in macro-etching process. The physical model about the driving force for the movement of separate S-enriched melts is further theoretically analyzed. In the mushy zone, the interface tension resultant applied on the separate S-enriched melts can act as the drive force for the lateral movement of separate S-enriched melts. And the buoyance applied on the separate S-enriched melts acts as the drive force for the upwards movement. The interaction between the impurity movement and the solute segregation is also discussed. (C) 2016 Elsevier Ltd. All rights reserved.
部门归属[ma, xiaoping ; li, dianzhong] chinese acad sci, inst met res, shenyang natl lab materials sci, shenyang 110016, peoples r china
关键词Heterogeneous Strip Mushy Zone Separate Melt Movement Interface Tension Phase Transition
学科领域Thermodynamics ; Engineering ; Mechanics
资助者Youth Innovation Promotion Association of Chinese Academy of Sciences
收录类别sci
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/75821
专题中国科学院金属研究所
通讯作者Ma, XP (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Materials Sci, Shenyang 110016, Peoples R China.
推荐引用方式
GB/T 7714
Ma, Xiaoping,Li, Dianzhong,Ma, XP . Heterogeneous strip originated from the separate enriched melt: Innate character and physical mechanism[J]. INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,2016,98:558-567.
APA Ma, Xiaoping,Li, Dianzhong,&Ma, XP .(2016).Heterogeneous strip originated from the separate enriched melt: Innate character and physical mechanism.INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER,98,558-567.
MLA Ma, Xiaoping,et al."Heterogeneous strip originated from the separate enriched melt: Innate character and physical mechanism".INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER 98(2016):558-567.
条目包含的文件
条目无相关文件。
个性服务
推荐该条目
保存到收藏夹
查看访问统计
导出为Endnote文件
谷歌学术
谷歌学术中相似的文章
[Ma, Xiaoping]的文章
[Li, Dianzhong]的文章
[Ma, XP (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Materials Sci, Shenyang 110016, Peoples R China.]的文章
百度学术
百度学术中相似的文章
[Ma, Xiaoping]的文章
[Li, Dianzhong]的文章
[Ma, XP (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Materials Sci, Shenyang 110016, Peoples R China.]的文章
必应学术
必应学术中相似的文章
[Ma, Xiaoping]的文章
[Li, Dianzhong]的文章
[Ma, XP (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Materials Sci, Shenyang 110016, Peoples R China.]的文章
相关权益政策
暂无数据
收藏/分享
所有评论 (0)
暂无评论
 

除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。