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Experimental and Finite Element Simulation of Milling Process for gamma-TiAl Intermetallics
Zhou Li1,2; Cui Chao1; Jia Qing2; Ma Yingshi1
Corresponding AuthorJia Qing(qjia@imr.ac.cn)
2017-04-11
Source PublicationACTA METALLURGICA SINICA
ISSN0412-1961
Volume53Issue:4Pages:505-512
Abstractgamma-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.
Keywordgamma-TiAl intermetallics milling process meso-model finite element
Funding OrganizationGeneral Project of Liaoning Provincial Department of Education
DOI10.11900/0412.1961.2016.00256
Indexed BySCI
Language英语
Funding ProjectGeneral Project of Liaoning Provincial Department of Education[LG201603]
WOS Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000399921900015
PublisherSCIENCE PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/124557
Collection中国科学院金属研究所
Corresponding AuthorJia Qing
Affiliation1.Shenyang Ligong Univ, Sch Mech Engn, Shenyang 110159, Peoples R China
2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
Recommended Citation
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.
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