Molecular Dynamics Simulation to Investigate the Rake Angle Effects on Nanometric Cutting of Single Crystal Ni3Al
Feng, Rui-cheng(冯瑞成)1,2; Qi, Yong-nian1,2; Zhu, Zong-xiao(朱宗孝)2; Song, Wen-yuan1,2; Li, Hai-yan(李海燕)2; Wang, Mao-mao1,2; Rui, Zhi-yuan(芮执元)1,2; Gu, Feng-shou3
2020-04
Source PublicationINTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING
ISSN2234-7593
Volume21Issue:4Pages:711-724
Abstract

Molecular dynamics, an effective method to gain an insight into nanometric behaviour of materials, was employed to study the nano-cutting behaviour of single crystal Ni3Al in nanometric scale. In this paper, comparisons were made for compressive/tensile stress, subsurface damage and surface roughness with three rake angles of a diamond tool. Subsurface damage was partitioned by region and studied with work hardening in detail. A model for precise characterization of surface roughness was established with consideration of local surface fluctuation. Simulation results showed that the chip thickness increased as rake angle changed from negative to positive, and the boundary formed between tensile and compressive stress was in consistent with the glide direction of stacking fault. Subsurface damage decreased as the increase of rake angle, and regular glide planes of stacking faults were found in front of the cutting tool. Further, the pinned dissociated 1/2 < 110 > superpartial dislocation with anti-phase boundary was demonstrated. The model was tested and characterized by implanted pits on perfect surface. Results showed that surface roughness can be well characterized, and an evident discrepancy was observed among three rake angles, especially for 30 degrees rake angle, which showed an distinct smooth surface compared with the others.

KeywordMolecular dynamics Local stress Anti-phase boundary Surface roughness Ni3Al
DOI10.1007/s12541-019-00249-z
Indexed BySCI
Language英语
WOS Research AreaEngineering
WOS SubjectEngineering, Manufacturing ; Engineering, Mechanical
WOS IDWOS:000522450300013
PublisherKOREAN SOC PRECISION ENG
Document Type期刊论文
Identifierhttp://ir.lut.edu.cn/handle/2XXMBERH/76497
Collection机电工程学院
Corresponding AuthorQi, Yong-nian; Li, Hai-yan(李海燕)
Affiliation1.Lanzhou Univ Technol, Engn Res Ctr Nonferrous Met New Equipment, Minist Educ, Lanzhou 730050, Peoples R China
2.Lanzhou Univ Technol, Sch Mech & Electron Engn, Lanzhou 730050, Peoples R China
3.Univ Huddersfield, Ctr Efficiency & Performance Engn, Huddersfield HD1 3DH, W Yorkshire, England
First Author AffilicationLanzhou University of Technology
Corresponding Author AffilicationLanzhou University of Technology
First Signature AffilicationLanzhou University of Technology
Recommended Citation
GB/T 7714
Feng, Rui-cheng,Qi, Yong-nian,Zhu, Zong-xiao,et al. Molecular Dynamics Simulation to Investigate the Rake Angle Effects on Nanometric Cutting of Single Crystal Ni3Al[J]. INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING,2020,21(4):711-724.
APA Feng, Rui-cheng.,Qi, Yong-nian.,Zhu, Zong-xiao.,Song, Wen-yuan.,Li, Hai-yan.,...&Gu, Feng-shou.(2020).Molecular Dynamics Simulation to Investigate the Rake Angle Effects on Nanometric Cutting of Single Crystal Ni3Al.INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING,21(4),711-724.
MLA Feng, Rui-cheng,et al."Molecular Dynamics Simulation to Investigate the Rake Angle Effects on Nanometric Cutting of Single Crystal Ni3Al".INTERNATIONAL JOURNAL OF PRECISION ENGINEERING AND MANUFACTURING 21.4(2020):711-724.
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