The Faceted Discrete Growth and Phase Differentiation During the Directional Solidification of 20SiMnMo5 Steel

doi:10.1007/s12540-018-0103-x

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	The Faceted Discrete Growth and Phase Differentiation During the Directional Solidification of 20SiMnMo5 Steel
	Ma, XP; Li, DZ
刊名	METALS AND MATERIALS INTERNATIONAL
	2018-07-01
卷号	24 期号:4 页码:886-893
关键词	Crystal morphology Segregation Discrete crystal growth Faceted interfaces Phase differentiation
ISSN号	1598-9623
DOI	10.1007/s12540-018-0103-x
英文摘要	The microstructures, segregation and cooling curve were investigated in the directional solidification of 20SiMnMo5 steel. The typical characteristic of faceted growth is identified. The microstructures within the single cellular and within the single dendritic arm, together with the contradictive segregation distribution against the cooling curve, verify the discrete crystal growth in multi-scales. Not only the single cellular/dendritic arm but also the single martensite zone within the single cellular/dendritic arm is produced by the discrete growth. In the viewpoint of segregation, the basic domain following continuous growth has not been revealed. Along with the multi-scale faceted discrete growth, the phase differentiation happens for both the solid and liquid. The differentiated liquid phases appear and evolve with different sizes, positions, compositions and durations. The physical mechanism for the faceted discrete growth is qualitatively established based on the nucleation of new faceted steps induced by the composition gradient and temperature gradient.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000435016700023
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80128]
专题	金属研究所_中国科学院金属研究所
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Ma, XP,Li, DZ. The Faceted Discrete Growth and Phase Differentiation During the Directional Solidification of 20SiMnMo5 Steel[J]. METALS AND MATERIALS INTERNATIONAL,2018,24(4):886-893.
APA	Ma, XP,&Li, DZ.(2018).The Faceted Discrete Growth and Phase Differentiation During the Directional Solidification of 20SiMnMo5 Steel.METALS AND MATERIALS INTERNATIONAL,24(4),886-893.
MLA	Ma, XP,et al."The Faceted Discrete Growth and Phase Differentiation During the Directional Solidification of 20SiMnMo5 Steel".METALS AND MATERIALS INTERNATIONAL 24.4(2018):886-893.