Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel

The effect of the initial starting microstructures on the austenite reverse transformation kinetics is thoroughly studied in low-carbon steel. The different initial starting microstructures including the ferrite + pearlite, bainite, and martensite are obtained through varied forward transformation....

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Main Authors:	Junhua Hou, Binbin He
Format:	Article
Language:	English
Published:	MDPI AG 2020-11-01
Series:	Metals
Subjects:	reverse transformation austenite martensite bainite advanced high-strength steel
Online Access:	https://www.mdpi.com/2075-4701/10/12/1601

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spelling	doaj-4ab06172534a46098764cedc93cb69cc2020-11-30T00:01:41ZengMDPI AGMetals2075-47012020-11-01101601160110.3390/met10121601Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon SteelJunhua Hou0Binbin He1Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaDepartment of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen 518055, ChinaThe effect of the initial starting microstructures on the austenite reverse transformation kinetics is thoroughly studied in low-carbon steel. The different initial starting microstructures including the ferrite + pearlite, bainite, and martensite are obtained through varied forward transformation. It is found that the bainite phase demonstrates highest reverse transformation rate while the ferrite + pearlite shows the lowest transformation rate. The above observation can be explained through the different grain size of the initial starting microstructures as the grain boundaries could act as the nucleation sites for austenite reverse transformation. The explanation is further substantiated based on the consideration of the reverse transformation kinetics from the martensite microstructure with different grain size.https://www.mdpi.com/2075-4701/10/12/1601reverse transformationaustenitemartensitebainiteadvanced high-strength steel
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Junhua Hou Binbin He
spellingShingle	Junhua Hou Binbin He Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel Metals reverse transformation austenite martensite bainite advanced high-strength steel
author_facet	Junhua Hou Binbin He
author_sort	Junhua Hou
title	Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel
title_short	Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel
title_full	Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel
title_fullStr	Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel
title_full_unstemmed	Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel
title_sort	effect of starting microstructures on the reverse transformation kinetics in low-carbon steel
publisher	MDPI AG
series	Metals
issn	2075-4701
publishDate	2020-11-01
description	The effect of the initial starting microstructures on the austenite reverse transformation kinetics is thoroughly studied in low-carbon steel. The different initial starting microstructures including the ferrite + pearlite, bainite, and martensite are obtained through varied forward transformation. It is found that the bainite phase demonstrates highest reverse transformation rate while the ferrite + pearlite shows the lowest transformation rate. The above observation can be explained through the different grain size of the initial starting microstructures as the grain boundaries could act as the nucleation sites for austenite reverse transformation. The explanation is further substantiated based on the consideration of the reverse transformation kinetics from the martensite microstructure with different grain size.
topic	reverse transformation austenite martensite bainite advanced high-strength steel
url	https://www.mdpi.com/2075-4701/10/12/1601
work_keys_str_mv	AT junhuahou effectofstartingmicrostructuresonthereversetransformationkineticsinlowcarbonsteel AT binbinhe effectofstartingmicrostructuresonthereversetransformationkineticsinlowcarbonsteel
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Effect of Starting Microstructures on the Reverse Transformation Kinetics in Low-Carbon Steel

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