RT Journal Article
T1 On the Taylor-Quinney coefficient in dynamically phase transforming materials. Application to 304 stainless steel
A1 Zaera, Ramón
A1 Rodríguez-Martínez, José A.
A1 Rittel, D.
AB We present a thermodynamic scheme to capture the variability of the Taylor-Quinney coefficient in austenitic steels showing strain induced martensitic transformation at high strain rates. For that task, the constitutive description due to Zaera et al. (2012) has been extended to account for the heat sources involved in the temperature increase of the material. These are the latent heat released due to the exothermic character of the transformation and the heat dissipated due to austenite and martensite straining. Through a differential treatment of these dissipative terms, the Taylor-Quinney coefficient develops a direct connection with the martensitic transformation becoming stress, strain and strain rate dependent. The improved constitutive description sheds light on experimental results available in the literature reporting unusual (> 1) values for the Taylor-Quinney coefficient.
PB Elsevier
SN 0749-6419
YR 2013
FD 2013-01
LK https://hdl.handle.net/10016/17014
UL https://hdl.handle.net/10016/17014
LA eng
NO The researchers of the University Carlos III of Madrid are indebted to the Comunidad Autónoma de Madrid (ProjectCCG10-UC3M/DPI-5596)) and to the Ministerio de Ciencia e Innovación de España (Project DPI/2011-24068) for the financialsupport received which allowed conducting part of this work. D. Rittel acknowledges the support of Carlos III University witha Cátedra de Excelencia funded by Banco Santander during academic year 2011–2012.
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