Study of bainitic transformation kinetics in SAE 52100 steel

Study of bainitic transformation kinetics in SAE 52100 steel

The objective of this research was to investigate the bainitic formation in austempered SAE 52100 steel. The original microstructure of SAE 52100 steel consisted of spheroidized pearlite. In the formation of bainite, SAE 52100 steel samples were austenitized at a temperature of 849 °C for 20 min, an...

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Main Authors: Yuming Pan, Bingxu Wang, Gary C. Barber
Format: Article
Language:English
Published: Elsevier 2019-09-01
Series:Journal of Materials Research and Technology
Online Access:http://www.sciencedirect.com/science/article/pii/S223878541930417X
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spelling doaj-ac02e1be5357492b8b317c49330c92a62020-11-25T02:47:41ZengElsevierJournal of Materials Research and Technology2238-78542019-09-018545694576Study of bainitic transformation kinetics in SAE 52100 steelYuming Pan0Bingxu Wang1Gary C. Barber2Automotive Tribology Center, Department of Mechanical Engineering, School of Engineering and Computer Science, Oakland University, Rochester, Michigan, 48309, USAFaculty of Mechanical Engineering and Automation, Zhejiang Sci-Tech University, Hangzhou, Zhejiang, 310018, PR China; Corresponding author.Automotive Tribology Center, Department of Mechanical Engineering, School of Engineering and Computer Science, Oakland University, Rochester, Michigan, 48309, USAThe objective of this research was to investigate the bainitic formation in austempered SAE 52100 steel. The original microstructure of SAE 52100 steel consisted of spheroidized pearlite. In the formation of bainite, SAE 52100 steel samples were austenitized at a temperature of 849 °C for 20 min, and then quickly quenched to the isothermal temperatures between 232 °C and 427 °C for various holding times from 20 s to 120 min. The hardness and microstructure of austempered SAE 52100 samples were analyzed using a Rockwell C hardness tester and metallurgical optical microscope. In addition, the bainitic formation in SAE 52100 steel was characterized using the theory of kinetic phase transformation. The activation energies of lower bainite and upper bainite microstructure were found to be 4.72 × 104 J/mol and 6.07 × 104 J/mol with frequency factors of 23.03 (1/s) and 273.65 (1/s), respectively. Keywords: SAE 52100 steel, Austempering, Bainite, Rockwell hardness, Transformation kineticshttp://www.sciencedirect.com/science/article/pii/S223878541930417X
collection DOAJ
language English
format Article
sources DOAJ
author Yuming Pan
Bingxu Wang
Gary C. Barber
spellingShingle Yuming Pan
Bingxu Wang
Gary C. Barber
Study of bainitic transformation kinetics in SAE 52100 steel
Journal of Materials Research and Technology
author_facet Yuming Pan
Bingxu Wang
Gary C. Barber
author_sort Yuming Pan
title Study of bainitic transformation kinetics in SAE 52100 steel
title_short Study of bainitic transformation kinetics in SAE 52100 steel
title_full Study of bainitic transformation kinetics in SAE 52100 steel
title_fullStr Study of bainitic transformation kinetics in SAE 52100 steel
title_full_unstemmed Study of bainitic transformation kinetics in SAE 52100 steel
title_sort study of bainitic transformation kinetics in sae 52100 steel
publisher Elsevier
series Journal of Materials Research and Technology
issn 2238-7854
publishDate 2019-09-01
description The objective of this research was to investigate the bainitic formation in austempered SAE 52100 steel. The original microstructure of SAE 52100 steel consisted of spheroidized pearlite. In the formation of bainite, SAE 52100 steel samples were austenitized at a temperature of 849 °C for 20 min, and then quickly quenched to the isothermal temperatures between 232 °C and 427 °C for various holding times from 20 s to 120 min. The hardness and microstructure of austempered SAE 52100 samples were analyzed using a Rockwell C hardness tester and metallurgical optical microscope. In addition, the bainitic formation in SAE 52100 steel was characterized using the theory of kinetic phase transformation. The activation energies of lower bainite and upper bainite microstructure were found to be 4.72 × 104 J/mol and 6.07 × 104 J/mol with frequency factors of 23.03 (1/s) and 273.65 (1/s), respectively. Keywords: SAE 52100 steel, Austempering, Bainite, Rockwell hardness, Transformation kinetics
url http://www.sciencedirect.com/science/article/pii/S223878541930417X
work_keys_str_mv AT yumingpan studyofbainitictransformationkineticsinsae52100steel
AT bingxuwang studyofbainitictransformationkineticsinsae52100steel
AT garycbarber studyofbainitictransformationkineticsinsae52100steel
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