Phase field simulation of secondary dendrite growth in directional solidification of binary alloys

doi:10.1007/s41230-019-8126-6

	Phase field simulation of secondary dendrite growth in directional solidification of binary alloys
	Feng, Li 1,2; Lu, Ni-ni 1; Gao, Ya-long 1; Zhu, Chang-sheng 2; Zhong, Jun-he 1; Xiao, Rong-zhen 1,2
刊名	CHINA FOUNDRY
	2019-03
卷号	16 期号:2 页码:97-104
关键词	phase-field method binary alloy directional solidification secondary dendrites
ISSN号	1672-6421
DOI	10.1007/s41230-019-8126-6
英文摘要	Phase field method was used to simulate the effect of grains orientation angle theta(11), and azimuth theta(A) of non-preferentially growing dendrites on the secondary dendrites of preferentially growing dendrites. In the simulation process, two single-factor influence experiments were designed for columnar crystal structures. The simulation results showed that, when theta(11) < 45 degrees and theta(A) < 45 degrees, as theta(11) was enlarged, the growth direction of the secondary dendrites on the preferentially growing dendrites at the converging grain boundary (GB) presented an increasing inclination to that of preferentially growing dendrites; with increasing theta(A), the growth direction of the secondary dendrites on the preferentially growing dendrites at the converging GB exhibited greater deflection, and the secondary dendrites grew with branches; the secondary dendrites on the preferentially growing dendrites at diverging GBs grew along a direction vertical to the growth direction of the preferentially growing dendrites. When theta(A) = 45 degrees and theta(11) = 45 degrees, the secondary dendrites grew in a direction vertical to the growth direction of preferentially growing dendrites. The morphologies of the dendrites obtained through simulation can also be found in metallographs of practical solidification experiments. This implies that the effect of a grain's orientation angle and azimuth of non-preferentially growing dendrites on the secondary dendrites of preferentially growing dendrites does exist and frequently appears in the practical solidification process.
资助项目	National Natural Science Foundation of China[11504149][11364024][51661020]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SPRINGER SINGAPORE PTE LTD
WOS记录号	WOS:000463578500003
状态	已发表
内容类型	期刊论文
源URL	[http://119.78.100.223/handle/2XXMBERH/32051]
专题	材料科学与工程学院计算机与通信学院省部共建有色金属先进加工与再利用国家重点实验室
通讯作者	Feng, Li
作者单位	1.Lanzhou Univ Technol, Coll Mat & Engn, Lanzhou 730050, Gansu, Peoples R China 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Feng, Li,Lu, Ni-ni,Gao, Ya-long,et al. Phase field simulation of secondary dendrite growth in directional solidification of binary alloys[J]. CHINA FOUNDRY,2019,16(2):97-104.
APA	Feng, Li,Lu, Ni-ni,Gao, Ya-long,Zhu, Chang-sheng,Zhong, Jun-he,&Xiao, Rong-zhen.(2019).Phase field simulation of secondary dendrite growth in directional solidification of binary alloys.CHINA FOUNDRY,16(2),97-104.
MLA	Feng, Li,et al."Phase field simulation of secondary dendrite growth in directional solidification of binary alloys".CHINA FOUNDRY 16.2(2019):97-104.