Next Article in Journal
Thermal Simulation Study on the Solidification Structure and Segregation of a Heavy Heat-Resistant Steel Casting
Next Article in Special Issue
Avrami Kinetic-Based Constitutive Relationship for Armco-Type Pure Iron in Hot Deformation
Previous Article in Journal
Properties of Jet-Plated Ni Coating on Ti Alloy (Ti6Al4V) with Laser Cleaning Pretreatment
Previous Article in Special Issue
Hot Deformation Behavior of a 2024 Aluminum Alloy Sheet and its Modeling by Fields-Backofen Model Considering Strain Rate Evolution
Article Menu
Issue 2 (February) cover image

Export Article

Open AccessArticle
Metals 2019, 9(2), 250; https://doi.org/10.3390/met9020250

Microstructure-Based Constitutive Modelling of Low-Alloy Multiphase TRIP Steels

1
Departamento de Tecnologías Industriales, Universidad de Talca, Camino a Los Niches, km. 1, Curicó 3340000, Chile
2
Departamento de Ingeniería Mecánica y Metalúrgica, Centro de Investigación en Nanotecnología y Materiales Avanzados (CIEN-UC), Pontificia Universidad Católica de Chile, Vicuña Mackenna 4860, Macul 7820436, Chile
3
Departamento de Ingeniería Metalúrgica, Universidad de Santiago de Chile, Av. Ecuador 3735, Estación Central 9170124, Chile
*
Author to whom correspondence should be addressed.
Received: 14 December 2018 / Revised: 11 February 2019 / Accepted: 13 February 2019 / Published: 20 February 2019
(This article belongs to the Special Issue Constitutive Modelling for Metals)
Full-Text   |   PDF [5537 KB, uploaded 20 February 2019]   |  
  |   Review Reports

Abstract

The microstructure of low-alloy multiphase transformation-induced plasticity (TRIP) steels consists of ferrite, bainite, and metastable retained austenite, which can be transformed into martensite by plastic deformation. In some cases, residual martensite can be present in the initial microstructure. The mechanical behavior of these steels depends on the interaction between the intrinsic characteristics of the existing phases and the austenite stability. Due to these factors, the definition of their true stress-strain flow law is complex. This work presents the mechanical characterization of a phenomenological constitutive stress-strain flow law based on the Bouquerel et al. model, as evaluated for three TRIP steels of the same composition but undergoing different heat treatments. Morphological aspects of the existing phases, austenite stability, and suitable mixture laws between phases are considered. The model is found to accurately reproduce a true stress-strain flow law obtained under tensile uniaxial conditions and provide detailed information on the effective stress strain partition between the existing phases. View Full-Text
Keywords: low-alloy TRIP steel; constitutive model; mechanical characterization. low-alloy TRIP steel; constitutive model; mechanical characterization.
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Salinas, Á.; Celentano, D.; Carvajal, L.; Artigas, A.; Monsalve, A. Microstructure-Based Constitutive Modelling of Low-Alloy Multiphase TRIP Steels. Metals 2019, 9, 250.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Metals EISSN 2075-4701 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top