The Influence of Different Microstructures to Fracture Toughness and Hardness of Quenched LNE 380 Steel at Different Temperatures-Reference-Cited by-同舟云学术

The Influence of Different Microstructures to Fracture Toughness and Hardness of Quenched LNE 380 Steel at Different Temperatures

Published:2014-09 Issue: Volume:805 Page:231-235
ISSN:1662-9752
Container-title:Materials Science Forum
language:
Short-container-title:MSF

Author:

Nogueira Ottoboni Dias Alexandre¹,Baldissera Márcia Regina¹,Coelho Gilberto Carvalho²,Oshiro Alfredo Yassuo³,Carvalho Rossi Eduardo¹,Paula Andersan dos Santos⁴,Rodrigues Geovani¹

Affiliation:

1. Universidade Federal de Itajubá/ UNIFEI

2. Escola de Engenharia de Lorena (EEL/USP)

3. Centro Universitário de Volta Redonda/ UniFOA

4. Universidade Federal Fluminense

Abstract

In this work it was analyzed the evolution of mechanical properties of Dual-Phase steel as a function of volume fractions of ferrite and martensite, obtained from steel type LNE 380. The intercritical region and the existing phases in function of temperature were determined using the THERMOCALC software. The samples of steel were quenched at different temperatures to obtain differents microstructures consisting of ferrite, pearlite and martensite. The microstructural characterization of the samples was performed by qualitative and quantitative metallography. The mechanical properties were determined by hardness and impact tests. It was concluded that the volume fraction of ferrite and martensite calculated experimentally agrees with the simulation and the variation of these fractions affects significantly the hardness of the steel, but does not significantly affect the results of fracture toughness.

Publisher

Trans Tech Publications, Ltd.

Subject

Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science

Link

https://www.scientific.net/MSF.805.231.pdf

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