Constitutive Model of TRIP600 Based on Rheological Theory

Abstract:

TRIP steels are prone to crack during forming process, mainly because of the transformation of retained Austenite to Martensite, causing discordance between external force and deformation. The mechanical behavior of TRIP steels has conventional elastic and plastic deformation, as well as time-dependent viscous properties. So it is necessary to consider the effect of time to their deformation behavior during constitutive model building. The rheological model used in TRIP steels is not only to reveal the soft and hard phase properties accurately and reasonably by combination of different components but also to indicate the TRIP effect during deformation process by change and combination of coefficients of components. In this paper, rheological constitutive models for TRIP600 are adopted and discussed based on rheological theory, and finally the uniform constitutive equations under creep condition and stress relaxation are built.

• Periodical: Materials Science Forum (Volume 850)
• Pages: 370-378
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.850.370
• Online since: March 2016
• Authors: Ji Quan Sun, Chuang Niu, Yan Jun Yin, Sheng Yang Teng
• Keywords: Constitutive Equation, Rheology, TRIP Effect

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