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Orientation Dependence of Deformation-Induced Martensite Transformation During Uniaxial Tensile Deformation of Carbide-Free Bainitic Steel
, A Ghosh, D Chakrabarti, S Singh B
Published in Springer
2020
Volume: 51
   
Issue: 5
Pages: 2053 - 2063
Abstract
The present study investigates the orientation dependence of deformation-induced martensite (DIM) transformation in carbide-free bainitic steel using experimental macrotexture analysis and crystal plasticity-based modelling. The results indicate that the P {110}〈122〉 component of retained austenite preferentially undergoes DIM transformation during uniaxial tensile deformation at room temperature. It is also found that the P component of retained austenite possesses the lowest Schmid factor value compared with other possible texture components. The lowest Schmid factor value of the P component results in the highest resolved shear stress value for its slipping. As a result, during plastic deformation when most of the initial components of the retained austenite reorient themselves to other relatively stable orientations, the P component remains almost unaffected. Accumulation of stress concentration thus increases along this component, which eventually leads to its deformation-induced transformation to martensite. © 2020, The Minerals, Metals & Materials Society and ASM International.
About the journal
JournalData powered by TypesetMetallurgical and Materials Transactions A
PublisherData powered by TypesetSpringer
ISSN10735623
Open AccessNo