Cargando…
Effect of Intercritical Tempering Temperature on Microstructure Evolution and Mechanical Properties of High Strength and Toughness Medium Manganese Steel
The effect of intercritical tempering temperature (TT) on the microstructure evolution and mechanical properties of 3.6Mn medium manganese steel, which contained martensite and austenite, was investigated by X-ray diffraction, electron backscattering diffraction and transmission electron microscopy,...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8949609/ https://www.ncbi.nlm.nih.gov/pubmed/35329620 http://dx.doi.org/10.3390/ma15062162 |
_version_ | 1784674938304593920 |
---|---|
author | Liang, Xiaokai Fu, Hang Cui, Mei Liu, Gang |
author_facet | Liang, Xiaokai Fu, Hang Cui, Mei Liu, Gang |
author_sort | Liang, Xiaokai |
collection | PubMed |
description | The effect of intercritical tempering temperature (TT) on the microstructure evolution and mechanical properties of 3.6Mn medium manganese steel, which contained martensite and austenite, was investigated by X-ray diffraction, electron backscattering diffraction and transmission electron microscopy, as well as Thermo-Calc calculation. The results showed that the volume fraction of reversed austenite (RA) increased firstly and then decreased with the increasing TT in the range of 550~650 °C. When the TT was below 620 °C, lath-like RA with good stability was mainly displayed between martensite laths and its size is about 100 nm. When the TT was higher than 650 °C, larger-size and block RA was formed in the martensite block boundaries, and part of the RA transformed into fresh martensite during cooling. The yield strength and tensile strength of the experimental steels decreased gradually as the TT increased, but the tensile strength increased gradually with the formation of block RA and fresh martensite. Lath-like RA could significantly improve the toughness and plasticity with slight loss of yield strength, but block RA decreased slightly them. |
format | Online Article Text |
id | pubmed-8949609 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-89496092022-03-26 Effect of Intercritical Tempering Temperature on Microstructure Evolution and Mechanical Properties of High Strength and Toughness Medium Manganese Steel Liang, Xiaokai Fu, Hang Cui, Mei Liu, Gang Materials (Basel) Article The effect of intercritical tempering temperature (TT) on the microstructure evolution and mechanical properties of 3.6Mn medium manganese steel, which contained martensite and austenite, was investigated by X-ray diffraction, electron backscattering diffraction and transmission electron microscopy, as well as Thermo-Calc calculation. The results showed that the volume fraction of reversed austenite (RA) increased firstly and then decreased with the increasing TT in the range of 550~650 °C. When the TT was below 620 °C, lath-like RA with good stability was mainly displayed between martensite laths and its size is about 100 nm. When the TT was higher than 650 °C, larger-size and block RA was formed in the martensite block boundaries, and part of the RA transformed into fresh martensite during cooling. The yield strength and tensile strength of the experimental steels decreased gradually as the TT increased, but the tensile strength increased gradually with the formation of block RA and fresh martensite. Lath-like RA could significantly improve the toughness and plasticity with slight loss of yield strength, but block RA decreased slightly them. MDPI 2022-03-15 /pmc/articles/PMC8949609/ /pubmed/35329620 http://dx.doi.org/10.3390/ma15062162 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Liang, Xiaokai Fu, Hang Cui, Mei Liu, Gang Effect of Intercritical Tempering Temperature on Microstructure Evolution and Mechanical Properties of High Strength and Toughness Medium Manganese Steel |
title | Effect of Intercritical Tempering Temperature on Microstructure Evolution and Mechanical Properties of High Strength and Toughness Medium Manganese Steel |
title_full | Effect of Intercritical Tempering Temperature on Microstructure Evolution and Mechanical Properties of High Strength and Toughness Medium Manganese Steel |
title_fullStr | Effect of Intercritical Tempering Temperature on Microstructure Evolution and Mechanical Properties of High Strength and Toughness Medium Manganese Steel |
title_full_unstemmed | Effect of Intercritical Tempering Temperature on Microstructure Evolution and Mechanical Properties of High Strength and Toughness Medium Manganese Steel |
title_short | Effect of Intercritical Tempering Temperature on Microstructure Evolution and Mechanical Properties of High Strength and Toughness Medium Manganese Steel |
title_sort | effect of intercritical tempering temperature on microstructure evolution and mechanical properties of high strength and toughness medium manganese steel |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8949609/ https://www.ncbi.nlm.nih.gov/pubmed/35329620 http://dx.doi.org/10.3390/ma15062162 |
work_keys_str_mv | AT liangxiaokai effectofintercriticaltemperingtemperatureonmicrostructureevolutionandmechanicalpropertiesofhighstrengthandtoughnessmediummanganesesteel AT fuhang effectofintercriticaltemperingtemperatureonmicrostructureevolutionandmechanicalpropertiesofhighstrengthandtoughnessmediummanganesesteel AT cuimei effectofintercriticaltemperingtemperatureonmicrostructureevolutionandmechanicalpropertiesofhighstrengthandtoughnessmediummanganesesteel AT liugang effectofintercriticaltemperingtemperatureonmicrostructureevolutionandmechanicalpropertiesofhighstrengthandtoughnessmediummanganesesteel |