Experimental and Finite Element Simulation of Milling Process for gamma-TiAl Intermetallics

doi:10.11900/0412.1961.2016.00256

IMR OpenIR

	Experimental and Finite Element Simulation of Milling Process for gamma-TiAl Intermetallics
	Zhou Li 1,2; Cui Chao 1; Jia Qing 2; Ma Yingshi 1
通讯作者	Jia Qing(qjia@imr.ac.cn)
	2017-04-11
发表期刊	ACTA METALLURGICA SINICA
ISSN	0412-1961
卷号	53 期号:4 页码:505-512
摘要	gamma-TiAl intermetallics are attractive candidates for applications in aircraft turbine engines due to their low density and good mechanical properties at high temperature. However, the low room temperature ductility makes the machinability of these materials poorer compared to the conventional alloys. In this work, a meso-model of gamma-TiAl intermetallic was developed using ABAQUS finite element software. The surface morphology and edge fracture mechanism of different material models were analyzed, and the effects of cutting parameters on the surface roughness and size of edge fracture were investigated. The results indicate that the cracks and pits occur between the lamellar and lamellar with different material properties. At the same time, due to the low ductility of gamma-TiAl intermetallic, the negative shear angle begins to form at the exit of workpiece, then the edge fracture is formed. In addition, for both surface roughness and size of edge fracture, the experimental data are slightly higher than the simulated data obtained by the hexagonal lamellar model, and smaller than those obtained by the rectangular lamellar model. With the increasing of cutting depth, the surface roughness and the size of edge fracture increase gradually, on the contrary, the cutting speed has a small effect on them. Therefore, in order to obtain a fine surface quality during machining of gamma-TiAl intermetallic, the cutting speed can be adopted as higher as possible, but not the cutting depth.
关键词	gamma-TiAl intermetallics milling process meso-model finite element
资助者	General Project of Liaoning Provincial Department of Education
DOI	10.11900/0412.1961.2016.00256
收录类别	SCI
语种	英语
资助项目	General Project of Liaoning Provincial Department of Education[LG201603]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000399921900015
出版者	SCIENCE PRESS
引用统计	被引频次：5[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/321006/124557
专题	中国科学院金属研究所
通讯作者	Jia Qing
作者单位	1.Shenyang Ligong Univ, Sch Mech Engn, Shenyang 110159, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhou Li,Cui Chao,Jia Qing,et al. Experimental and Finite Element Simulation of Milling Process for gamma-TiAl Intermetallics[J]. ACTA METALLURGICA SINICA,2017,53(4):505-512.
APA	Zhou Li,Cui Chao,Jia Qing,&Ma Yingshi.(2017).Experimental and Finite Element Simulation of Milling Process for gamma-TiAl Intermetallics.ACTA METALLURGICA SINICA,53(4),505-512.
MLA	Zhou Li,et al."Experimental and Finite Element Simulation of Milling Process for gamma-TiAl Intermetallics".ACTA METALLURGICA SINICA 53.4(2017):505-512.