Achieving stable ultrafine grain structure through cold shearing and heat treatment of Cr4Mo4Ni4V martensitic steel

Wanli Yang; Bin Shao; Pengwen Zhou; Hongwei Jiang; Yingying Zong

doi:10.1016/j.jmrt.2023.10.166

Achieving stable ultrafine grain structure through cold shearing and heat treatment of Cr₄Mo₄Ni₄V martensitic steel

Wanli Yang
, Bin Shao
, Pengwen Zhou
, Hongwei Jiang
, Yingying Zong^*

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Harbin Bearing Company of CNAC Group

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

In this study, a full view of the shear location was presented and ultrafine grain structure with excellent thermal stability during 700–850 °C was obtained through cold shearing and heat treatment of martensitic Cr₄Mo₄Ni₄V steel. The results reveal that initial martensite blocks were refined through local rotating the elongated blocks into small grains in the shear region with effective strain 2–2.5. Driven by the shear deformation and heat treatment, ferrite recrystallization (about 1 μm) bands formed in the shear region mainly through continuous recrystallization at 700–850 °C, and mixed-grain structure (6.2 μm in average) formed at 1000 °C. Interestingly, the size and distribution of carbides in the shear region and undeformed region exhibited a dramatic difference due to the ultrafine recrystallization. This study provided information regarding achieving stable ultrafine grain structure through cold shearing and heat treatment of Cr₄Mo₄Ni₄V martensitic steel.

Original language	English
Pages (from-to)	7482-7494
Number of pages	13
Journal	Journal of Materials Research and Technology
Volume	27
DOIs	https://doi.org/10.1016/j.jmrt.2023.10.166
State	Published - 1 Nov 2023

Keywords

Carbide
CrMoNiV steel
Martensite
Recrystallization
Shear deformation

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10.1016/j.jmrt.2023.10.166

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title = "Achieving stable ultrafine grain structure through cold shearing and heat treatment of Cr4Mo4Ni4V martensitic steel",

abstract = "In this study, a full view of the shear location was presented and ultrafine grain structure with excellent thermal stability during 700–850 °C was obtained through cold shearing and heat treatment of martensitic Cr4Mo4Ni4V steel. The results reveal that initial martensite blocks were refined through local rotating the elongated blocks into small grains in the shear region with effective strain 2–2.5. Driven by the shear deformation and heat treatment, ferrite recrystallization (about 1 μm) bands formed in the shear region mainly through continuous recrystallization at 700–850 °C, and mixed-grain structure (6.2 μm in average) formed at 1000 °C. Interestingly, the size and distribution of carbides in the shear region and undeformed region exhibited a dramatic difference due to the ultrafine recrystallization. This study provided information regarding achieving stable ultrafine grain structure through cold shearing and heat treatment of Cr4Mo4Ni4V martensitic steel.",

keywords = "Carbide, CrMoNiV steel, Martensite, Recrystallization, Shear deformation",

author = "Wanli Yang and Bin Shao and Pengwen Zhou and Hongwei Jiang and Yingying Zong",

note = "Publisher Copyright: {\textcopyright} 2023 The Authors",

year = "2023",

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doi = "10.1016/j.jmrt.2023.10.166",

language = "英语",

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TY - JOUR

T1 - Achieving stable ultrafine grain structure through cold shearing and heat treatment of Cr4Mo4Ni4V martensitic steel

AU - Yang, Wanli

AU - Shao, Bin

AU - Zhou, Pengwen

AU - Jiang, Hongwei

AU - Zong, Yingying

PY - 2023/11/1

Y1 - 2023/11/1

N2 - In this study, a full view of the shear location was presented and ultrafine grain structure with excellent thermal stability during 700–850 °C was obtained through cold shearing and heat treatment of martensitic Cr4Mo4Ni4V steel. The results reveal that initial martensite blocks were refined through local rotating the elongated blocks into small grains in the shear region with effective strain 2–2.5. Driven by the shear deformation and heat treatment, ferrite recrystallization (about 1 μm) bands formed in the shear region mainly through continuous recrystallization at 700–850 °C, and mixed-grain structure (6.2 μm in average) formed at 1000 °C. Interestingly, the size and distribution of carbides in the shear region and undeformed region exhibited a dramatic difference due to the ultrafine recrystallization. This study provided information regarding achieving stable ultrafine grain structure through cold shearing and heat treatment of Cr4Mo4Ni4V martensitic steel.

AB - In this study, a full view of the shear location was presented and ultrafine grain structure with excellent thermal stability during 700–850 °C was obtained through cold shearing and heat treatment of martensitic Cr4Mo4Ni4V steel. The results reveal that initial martensite blocks were refined through local rotating the elongated blocks into small grains in the shear region with effective strain 2–2.5. Driven by the shear deformation and heat treatment, ferrite recrystallization (about 1 μm) bands formed in the shear region mainly through continuous recrystallization at 700–850 °C, and mixed-grain structure (6.2 μm in average) formed at 1000 °C. Interestingly, the size and distribution of carbides in the shear region and undeformed region exhibited a dramatic difference due to the ultrafine recrystallization. This study provided information regarding achieving stable ultrafine grain structure through cold shearing and heat treatment of Cr4Mo4Ni4V martensitic steel.

KW - Carbide

KW - CrMoNiV steel

KW - Martensite

KW - Recrystallization

KW - Shear deformation

UR - https://www.scopus.com/pages/publications/85178322339

U2 - 10.1016/j.jmrt.2023.10.166

DO - 10.1016/j.jmrt.2023.10.166

M3 - 文章

AN - SCOPUS:85178322339

SN - 2238-7854

VL - 27

SP - 7482

EP - 7494

JO - Journal of Materials Research and Technology

JF - Journal of Materials Research and Technology

ER -

Achieving stable ultrafine grain structure through cold shearing and heat treatment of Cr₄Mo₄Ni₄V martensitic steel

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Keywords

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