An analytical approach for predicting as-cast grain size of inoculated aluminum alloys

IMR OpenIR

	An analytical approach for predicting as-cast grain size of inoculated aluminum alloys
	Qi, Xin Bo; Chen, Yun; Kang, Xiu Hong; Li, Dian Zhong; Du, Qiang; qiang.du@sintef.no
	2015
发表期刊	ACTA MATERIALIA
ISSN	1359-6454
卷号	99 页码:337-346
摘要	An analytical model is proposed to predict as-cast grain size of inoculated aluminum alloys during isothermal and non-isothermal solidification. The model is derived from a unified nucleation ceasing criterion which takes into account two stifling effects resulted from recalescence and solute segregation. The theoretical framework adopted by Greer et al. is utilized to account for the phase transformation kinetics during both isothermal and non-isothermal solidification. The proposed analytical model is able to predict maximum nucleation undercooling and hence the as-cast grain size. With some rational assumptions, the model yields a novel relationship between grain size and diffusivity-weighted Grain Restriction Factor, U. The model predictions on grain size for a variety of binary alloys has been compared with that from the reported semi-empirical relation, numerical solution and experimental measurements, and good agreements have been achieved. Unlike previous analytical models, all the input parameters of the present model are physically meaningful, including thermo-physical properties, alloy composition, cooling and inoculation conditions. Therefore the model can be applied directly to various alloys systems. It is concluded that the proposed model is valuable in identifying alloy composition and processing parameters to optimize as-cast grain size. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
部门归属	[qi, xin bo ; chen, yun ; kang, xiu hong ; li, dian zhong] chinese acad sci, inst met res, shenyang 110016, peoples r china ; [du, qiang] sintef mat & chem, n-7465 trondheim, norway
关键词	Al Alloys Analytical Method Inoculants Grain Size Prediction Solidification
资助者	National Natural Science Foundation for Young Scientists of China [51401223]; National Natural Science Foundation of China [51271184]
收录类别	sci
语种	英语
WOS记录号	WOS:000362145400035
引用统计	被引频次：23[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/74623
专题	中国科学院金属研究所
通讯作者	qiang.du@sintef.no
推荐引用方式 GB/T 7714	Qi, Xin Bo,Chen, Yun,Kang, Xiu Hong,et al. An analytical approach for predicting as-cast grain size of inoculated aluminum alloys[J]. ACTA MATERIALIA,2015,99:337-346.
APA	Qi, Xin Bo,Chen, Yun,Kang, Xiu Hong,Li, Dian Zhong,Du, Qiang,&qiang.du@sintef.no.(2015).An analytical approach for predicting as-cast grain size of inoculated aluminum alloys.ACTA MATERIALIA,99,337-346.
MLA	Qi, Xin Bo,et al."An analytical approach for predicting as-cast grain size of inoculated aluminum alloys".ACTA MATERIALIA 99(2015):337-346.