Physical simulation on Joining of 700 MC steel: A HAZ and CCT curve study

In the present work, coarse grain heat-affected zone (CGHAZ) was simulated by Gleeble 3800 thermo-mechanical simulator. A continuous cooling transformation (CCT) diagram was generated from the results of the dilatometer, hardness, and microstructure analysis. The heating rate of 100 °C s ^−1 , the p...

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Main Authors: Rakesh Roshan, Ajit Kumar Naik, Kuldeep Kumar Saxena, Velaphi Msomi
Format: Article
Language:English
Published: IOP Publishing 2022-01-01
Series:Materials Research Express
Subjects:
Online Access:https://doi.org/10.1088/2053-1591/ac6792
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author Rakesh Roshan
Ajit Kumar Naik
Kuldeep Kumar Saxena
Velaphi Msomi
author_facet Rakesh Roshan
Ajit Kumar Naik
Kuldeep Kumar Saxena
Velaphi Msomi
author_sort Rakesh Roshan
collection DOAJ
description In the present work, coarse grain heat-affected zone (CGHAZ) was simulated by Gleeble 3800 thermo-mechanical simulator. A continuous cooling transformation (CCT) diagram was generated from the results of the dilatometer, hardness, and microstructure analysis. The heating rate of 100 °C s ^−1 , the peak temperature of 1300 °C, the holding time of one second, and thirteen different cooling conditions representing the actual welding condition were chosen here for simulation where the cooling rate was controlled by t _8/3 . At slow cooling rate ferrite, cementite, pearlite, and bainite were obtained. At a medium cooling rate, ferrite, bainite, and a small amount of martensite were observed. At a fast-cooling rate i.e., 100 °C s ^−1 fully martensite was obtained. The obtained hardness values were 225 HV, 263 HV, and 342 HV for slower, medium, and fast cooling rates respectively. The increase in hardness value shows that the amount of non-diffusional phases increases with an increase in cooling rate. The CCT curve shows the range of cooling rate and phase transformation temperature of ferrite, bainite, and martensite.
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spelling doaj.art-3c257c602deb4c0a881cc50ef3a16d7f2023-08-09T16:04:36ZengIOP PublishingMaterials Research Express2053-15912022-01-019404652210.1088/2053-1591/ac6792Physical simulation on Joining of 700 MC steel: A HAZ and CCT curve studyRakesh Roshan0Ajit Kumar Naik1Kuldeep Kumar Saxena2https://orcid.org/0000-0003-4064-5113Velaphi Msomi3https://orcid.org/0000-0002-5752-8848Department of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela 769 008, IndiaDepartment of Metallurgical and Materials Engineering, National Institute of Technology, Rourkela 769 008, IndiaDepartment of Mechanical Engineering, GLA University , Mathura, U. P., 281406, IndiaMechanical Engineering Department, Faculty of Engineering and the Built Environment (FEBE), Cape Peninsula University of Technology , South AfricaIn the present work, coarse grain heat-affected zone (CGHAZ) was simulated by Gleeble 3800 thermo-mechanical simulator. A continuous cooling transformation (CCT) diagram was generated from the results of the dilatometer, hardness, and microstructure analysis. The heating rate of 100 °C s ^−1 , the peak temperature of 1300 °C, the holding time of one second, and thirteen different cooling conditions representing the actual welding condition were chosen here for simulation where the cooling rate was controlled by t _8/3 . At slow cooling rate ferrite, cementite, pearlite, and bainite were obtained. At a medium cooling rate, ferrite, bainite, and a small amount of martensite were observed. At a fast-cooling rate i.e., 100 °C s ^−1 fully martensite was obtained. The obtained hardness values were 225 HV, 263 HV, and 342 HV for slower, medium, and fast cooling rates respectively. The increase in hardness value shows that the amount of non-diffusional phases increases with an increase in cooling rate. The CCT curve shows the range of cooling rate and phase transformation temperature of ferrite, bainite, and martensite.https://doi.org/10.1088/2053-1591/ac6792gleebleCCTCGHAZmicrostructure700 MC steel
spellingShingle Rakesh Roshan
Ajit Kumar Naik
Kuldeep Kumar Saxena
Velaphi Msomi
Physical simulation on Joining of 700 MC steel: A HAZ and CCT curve study
Materials Research Express
gleeble
CCT
CGHAZ
microstructure
700 MC steel
title Physical simulation on Joining of 700 MC steel: A HAZ and CCT curve study
title_full Physical simulation on Joining of 700 MC steel: A HAZ and CCT curve study
title_fullStr Physical simulation on Joining of 700 MC steel: A HAZ and CCT curve study
title_full_unstemmed Physical simulation on Joining of 700 MC steel: A HAZ and CCT curve study
title_short Physical simulation on Joining of 700 MC steel: A HAZ and CCT curve study
title_sort physical simulation on joining of 700 mc steel a haz and cct curve study
topic gleeble
CCT
CGHAZ
microstructure
700 MC steel
url https://doi.org/10.1088/2053-1591/ac6792
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