Title: Research on surface residual stress of micro-milling nickel-based superalloy Inconel 718

Authors: Xiaohong Lu; Yanjun Lu; Furui Wang; Chunyu Zhao; Lusi Gao; Likun Si

Addresses: Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, No. 2 LingGong Road, Dalian, LiaoNing Province, China ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, No. 2 LingGong Road, Dalian, LiaoNing Province, China ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, No. 2 LingGong Road, Dalian, LiaoNing Province, China ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, No. 2 LingGong Road, Dalian, LiaoNing Province, China ' School of Materials Science and Engineering, Dalian University of Technology, No. 2 LingGong Road, Dalian, LiaoNing Province, China ' Key Laboratory for Precision and Non-traditional Machining Technology of Ministry of Education, Dalian University of Technology, No. 2 LingGong Road, Dalian, LiaoNing Province, China

Abstract: Nowadays, there are urgent demands of micro structure/parts which have high strength in high temperature environment in the fields such as aerospace, energy, power, bio-medical, etc. Nickel-based superalloy Inconel 718 is the suitable material for manufacturing the kind of micro parts. Micro-milling can be applied to manufacture Inconel 718 micro components. Different processing conditions lead to different residual stress on workpiece surface, which has a significant effect on reliability and working life of product. To study the residual stress problem in micro-milling of Inconel 718, the investigation of micro-milling Inconel 718 process was implemented based on ABAQUS simulation. The model based on the input of cutting parameters and the output of surface residual stress was developed. At last, the experiments of micro-milling Inconel 718 were conducted to verify the validity of model. The work offers reference for selecting cutting parameters in micro-milling of Inconel 718.

Keywords: nickel-based superalloys; Inconel 718; micro-milling; ABAQUS; residual stress; cutting parameters; modelling; simulation; micromachining; high temperature environments.

DOI: 10.1504/IJNM.2016.076159

International Journal of Nanomanufacturing, 2016 Vol.12 No.1, pp.82 - 92

Received: 27 Nov 2015
Accepted: 27 Nov 2015
Published online: 27 Apr 2016 *

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