Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN Inclusions

This work investigates the correlation between TiN inclusions and microstructural properties of HARDOX 450 steel using optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electron backscattered diffractometer (EBSD) methods. Some amount of microsi...

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Main Authors: Zhongyang Wang, Xiang Wu, Denghui Liu, Xiurong Zuo
Format: Article
Language:English
Published: Frontiers Media S.A. 2021-05-01
Series:Frontiers in Materials
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmats.2021.691551/full
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author Zhongyang Wang
Xiang Wu
Denghui Liu
Xiurong Zuo
author_facet Zhongyang Wang
Xiang Wu
Denghui Liu
Xiurong Zuo
author_sort Zhongyang Wang
collection DOAJ
description This work investigates the correlation between TiN inclusions and microstructural properties of HARDOX 450 steel using optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electron backscattered diffractometer (EBSD) methods. Some amount of microsized TiN inclusions were formed in the temperature range of the solid–liquid zone; however, they exhibited fracture features of deep dimples rather than a cleavage plane, which is closely related to the ability of the microstructure to arrest cracks. Upon tensile loading, a single microcrack first appeared inside the microsized TiN inclusions, and then, multiple microcracks formed, parts of which widened in the direction of tensile stress. A schematic mechanism map was plotted to reveal the propagation behavior and fracture mechanism of the microcracks in the TiN inclusions.
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spelling doaj.art-145dd810b3e444eb88536f9ee81c2b122022-12-21T22:10:20ZengFrontiers Media S.A.Frontiers in Materials2296-80162021-05-01810.3389/fmats.2021.691551691551Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN InclusionsZhongyang WangXiang WuDenghui LiuXiurong ZuoThis work investigates the correlation between TiN inclusions and microstructural properties of HARDOX 450 steel using optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and electron backscattered diffractometer (EBSD) methods. Some amount of microsized TiN inclusions were formed in the temperature range of the solid–liquid zone; however, they exhibited fracture features of deep dimples rather than a cleavage plane, which is closely related to the ability of the microstructure to arrest cracks. Upon tensile loading, a single microcrack first appeared inside the microsized TiN inclusions, and then, multiple microcracks formed, parts of which widened in the direction of tensile stress. A schematic mechanism map was plotted to reveal the propagation behavior and fracture mechanism of the microcracks in the TiN inclusions.https://www.frontiersin.org/articles/10.3389/fmats.2021.691551/fullHARDOX450 wear-resistant steelmechanical propertiesmicrostructureTiN inclusionsmicrocracks
spellingShingle Zhongyang Wang
Xiang Wu
Denghui Liu
Xiurong Zuo
Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN Inclusions
Frontiers in Materials
HARDOX450 wear-resistant steel
mechanical properties
microstructure
TiN inclusions
microcracks
title Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN Inclusions
title_full Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN Inclusions
title_fullStr Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN Inclusions
title_full_unstemmed Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN Inclusions
title_short Correlation Between Microstructure and Fracture Behavior in Thick HARDOX 450 Wear-Resistant Steel With TiN Inclusions
title_sort correlation between microstructure and fracture behavior in thick hardox 450 wear resistant steel with tin inclusions
topic HARDOX450 wear-resistant steel
mechanical properties
microstructure
TiN inclusions
microcracks
url https://www.frontiersin.org/articles/10.3389/fmats.2021.691551/full
work_keys_str_mv AT zhongyangwang correlationbetweenmicrostructureandfracturebehaviorinthickhardox450wearresistantsteelwithtininclusions
AT xiangwu correlationbetweenmicrostructureandfracturebehaviorinthickhardox450wearresistantsteelwithtininclusions
AT denghuiliu correlationbetweenmicrostructureandfracturebehaviorinthickhardox450wearresistantsteelwithtininclusions
AT xiurongzuo correlationbetweenmicrostructureandfracturebehaviorinthickhardox450wearresistantsteelwithtininclusions