Finite element modelling of microstructural changes in dry and cryogenic machining AISI 52100 steel. Issue 11 (23rd July 2016)

• Record Type: Journal Article
• Authors: Umbrello, D.; Caruso, S.; Imbrogno, S.
• Is Part Of: Materials science and technology. Volume 32:Issue 11(2016)
• Page Start: 1062
• Page End: 1070
• Publication Date: 2016-07-23
• Subjects: AISI 52100 -- Machining -- White layer -- Finite element modelling; Materials science -- Periodicals; Microstructure -- Periodicals; Metallurgy -- Periodicals; 620.1105
• DOI: 10.1080/02670836.2015.1104085
• Languages: English
• ISSNs: 0267-0836

Abstract

Abstract : The paper presents the results of investigations of grain size and hardness variation induced by orthogonal machining of hardened AISI 52100 bearing steel in the white layer (WL). The experiments were performed under dry and cryogenic cooling conditions using honed cubic boron nitride tool inserts. The experimental results are compared with a newly developed finite element model to describe microstructural changes and dynamic recrystallisation. Furthermore, the numerical model will be able to suggest if the WL formation is mainly thermally induced through phase transformation or mainly mechanically induced through severe plastic deformation. An iterative procedure was utilised to experimentally calibrate and then validate the proposed model at varying cutting speeds and cutting cooling conditions (dry and cryogenic). This paper is part of a Themed Issue on Recent developments in bearing steels.