Microstructural Characterization of a 1200 MPa Complex-Phase Steel

Renan de Melo Correia Lima; Julio Cesar Spadotto; Flávia Tereza dos Santos Fernandes Tolomelli; Maria Isabel Ramos Navarro; Amy J. Clarke; Kester D. Clarke; Fernando Cosme Rizzo Assunção

doi:10.1590/1980-5373-MR-2023-0015

Microstructural Characterization of a 1200 MPa Complex-Phase Steel

Renan de Melo Correia Lima^*, Julio Cesar Spadotto, Flávia Tereza dos Santos Fernandes Tolomelli, Maria Isabel Ramos Navarro, Amy J. Clarke, Kester D. Clarke, Fernando Cosme Rizzo Assunção

^*Corresponding author for this work

Materials Engineering

Research output: Contribution to journal › Article › peer-review

Abstract

The demand for new advanced high strength steels (AHSS) has been increasing in the last few decades. A large part of this demand comes from automotive companies. We have produced a new complex-phase (CP) steel with 1200 MPa of mechanical resistance and 8% of elongation, called CP1200. In this paper the dilatometric and microstructural characterization of a newly produced CP1200 steel is presented. The new steel was produced by making changes to the heat treatment of the already industrially available CP1100. The microstructure was quantified using light optical microscopy (LOM) and electron backscatter diffraction (EBSD). The microstructure of both steels was compared to identify the origin of the mechanical properties improvement. A new microstructure distribution, with higher amount of bainite and smaller concentration of ferrite and martensite was identified.

Original language	English
Article number	e20230015
Journal	Materials Research
Volume	26
DOIs	https://doi.org/10.1590/1980-5373-MR-2023-0015
Publication status	Published - 2 Jun 2023

Keywords

AHSS
Complex-Phase steel
Phase Transformation

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10.1590/1980-5373-MR-2023-0015Licence: CC BY

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title = "Microstructural Characterization of a 1200 MPa Complex-Phase Steel",

abstract = "The demand for new advanced high strength steels (AHSS) has been increasing in the last few decades. A large part of this demand comes from automotive companies. We have produced a new complex-phase (CP) steel with 1200 MPa of mechanical resistance and 8\% of elongation, called CP1200. In this paper the dilatometric and microstructural characterization of a newly produced CP1200 steel is presented. The new steel was produced by making changes to the heat treatment of the already industrially available CP1100. The microstructure was quantified using light optical microscopy (LOM) and electron backscatter diffraction (EBSD). The microstructure of both steels was compared to identify the origin of the mechanical properties improvement. A new microstructure distribution, with higher amount of bainite and smaller concentration of ferrite and martensite was identified.",

keywords = "AHSS, Complex-Phase steel, Phase Transformation",

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year = "2023",

month = jun,

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doi = "10.1590/1980-5373-MR-2023-0015",

language = "English",

volume = "26",

journal = "Materials Research",

issn = "1516-1439",

publisher = "Universidade Federal de Sao Carlos",

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T1 - Microstructural Characterization of a 1200 MPa Complex-Phase Steel

AU - de Melo Correia Lima, Renan

AU - Spadotto, Julio Cesar

AU - dos Santos Fernandes Tolomelli, Flávia Tereza

AU - Navarro, Maria Isabel Ramos

AU - Clarke, Amy J.

AU - Clarke, Kester D.

AU - Assunção, Fernando Cosme Rizzo

PY - 2023/6/2

Y1 - 2023/6/2

N2 - The demand for new advanced high strength steels (AHSS) has been increasing in the last few decades. A large part of this demand comes from automotive companies. We have produced a new complex-phase (CP) steel with 1200 MPa of mechanical resistance and 8% of elongation, called CP1200. In this paper the dilatometric and microstructural characterization of a newly produced CP1200 steel is presented. The new steel was produced by making changes to the heat treatment of the already industrially available CP1100. The microstructure was quantified using light optical microscopy (LOM) and electron backscatter diffraction (EBSD). The microstructure of both steels was compared to identify the origin of the mechanical properties improvement. A new microstructure distribution, with higher amount of bainite and smaller concentration of ferrite and martensite was identified.

AB - The demand for new advanced high strength steels (AHSS) has been increasing in the last few decades. A large part of this demand comes from automotive companies. We have produced a new complex-phase (CP) steel with 1200 MPa of mechanical resistance and 8% of elongation, called CP1200. In this paper the dilatometric and microstructural characterization of a newly produced CP1200 steel is presented. The new steel was produced by making changes to the heat treatment of the already industrially available CP1100. The microstructure was quantified using light optical microscopy (LOM) and electron backscatter diffraction (EBSD). The microstructure of both steels was compared to identify the origin of the mechanical properties improvement. A new microstructure distribution, with higher amount of bainite and smaller concentration of ferrite and martensite was identified.

KW - AHSS

KW - Complex-Phase steel

KW - Phase Transformation

U2 - 10.1590/1980-5373-MR-2023-0015

DO - 10.1590/1980-5373-MR-2023-0015

M3 - Article

AN - SCOPUS:85165208977

SN - 1516-1439

VL - 26

JO - Materials Research

JF - Materials Research

M1 - e20230015

ER -

Microstructural Characterization of a 1200 MPa Complex-Phase Steel

Abstract

Keywords

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