Competitive growth of grains in ZA alloys during continuous casting with heated mould

doi:10.1179/136404605225022838

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	Competitive growth of grains in ZA alloys during continuous casting with heated mould
	Ma, Y; Liu, HJ; Hao, Y; Yan, FY
	2005
发表期刊	INTERNATIONAL JOURNAL OF CAST METALS RESEARCH
ISSN	1364-0461
卷号	18 期号:1 页码:55-58
摘要	Nucleation and competitive growth of grains in Zn-Al alloys were studied during pulling of ingots under conditions of continuous casting by the Ohno Continuous Casting (OCC) process. Microstructural observation shows that nuclei appearing on the end of the dummy bar have a disordered orientation. However, during competitive growth under conditions of directional heat flow, the ingot grows continuously, and the crystals with less favourable orientations are gradually eliminated. The properties of the alloy greatly influence the selection process. Alloys with a narrow solidification range (ZA5 and ZA8) can directly initiate their columnar structure from nuclei on the end of the dummy bar through competitive growth. Alloys with higher aluminium content (ZA12, ZA22 and ZA27) have a wider solidification range, and their parallel columnar structure evolves only later from the equiaxed crystals on the end of the dummy bar.
关键词	Zn-Al alloy Ohno Continuous Casting directional solidification crystal growth mechanism
DOI	10.1179/136404605225022838
收录类别	SCI
语种	英语
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000227828600007
出版者	TAYLOR & FRANCIS LTD
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/35815
专题	国际教育学院材料科学与工程学院
通讯作者	Hao, Y
作者单位	Lanzhou Univ Technol, State Key Lab Adv Nonferrous Mat, Lanzhou 730050, Peoples R China
推荐引用方式 GB/T 7714	Ma, Y,Liu, HJ,Hao, Y,et al. Competitive growth of grains in ZA alloys during continuous casting with heated mould[J]. INTERNATIONAL JOURNAL OF CAST METALS RESEARCH,2005,18(1):55-58.
APA	Ma, Y,Liu, HJ,Hao, Y,&Yan, FY.(2005).Competitive growth of grains in ZA alloys during continuous casting with heated mould.INTERNATIONAL JOURNAL OF CAST METALS RESEARCH,18(1),55-58.
MLA	Ma, Y,et al."Competitive growth of grains in ZA alloys during continuous casting with heated mould".INTERNATIONAL JOURNAL OF CAST METALS RESEARCH 18.1(2005):55-58.