Please use this identifier to cite or link to this item: https://hdl.handle.net/10419/288334 
Year of Publication: 
2020
Citation: 
[Journal:] Journal of Intelligent Manufacturing [ISSN:] 1572-8145 [Volume:] 32 [Issue:] 3 [Publisher:] Springer US [Place:] New York, NY [Year:] 2020 [Pages:] 877-894
Publisher: 
Springer US, New York, NY
Abstract: 
When machining metastable austenitic stainless steel with cryogenic cooling, a deformation-induced phase transformation from γ-austenite to α′-martensite can be realized in the workpiece subsurface. This leads to a higher microhardness and thus improved fatigue and wear resistance. A parametric and a non-parametric model were developed in order to investigate the correlation between the thermomechanical load in the workpiece subsurface and the resulting α′-martensite content. It was demonstrated that increasing passive forces and cutting forces promoted the deformation-induced phase transformation, while increasing temperatures had an inhibiting effect. The feed force had no significant influence on the α′-martensite content. With the proposed models it is now possible to estimate the α′-martensite content during cryogenic turning by means of in-situ measurement of process forces and temperatures.
Subjects: 
Martensite
Cryogenic turning
Metastable austenitic steel
Deformation-induced phase transformation
Persistent Identifier of the first edition: 
Creative Commons License: 
cc-by Logo
Document Type: 
Article
Document Version: 
Published Version

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