Effect of austenitizing temperature on microstructure of M50 steel

Li Na Zhou; Guang Ze Tang; Xin Xin Ma; Ting Bao Wu; Fang Ma; Kai Li Zhao

Effect of austenitizing temperature on microstructure of M50 steel

Li Na Zhou
, Guang Ze Tang^*
, Xin Xin Ma
, Ting Bao Wu
, Fang Ma
, Kai Li Zhao

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Harbin Institute of Technology
Harbin Bearing Company of CNAC Group

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

10 Scopus citations

Abstract

Effects of austenitizing temperature on carbide dissolution, grain size and retained austenite content of M50 steel were studied by means of electrolytic extraction, optical microscope observation, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that M₂₃C₆ and M₆C carbides completely dissolve at the austenitizing temperature of 1000℃ and 1100℃. And the type of the residual carbides remains unchanged with the increasing temperature. The phenomenon of individual grain growth occurs at 1120℃, the average grain size reaches 37 μm at 1140℃, and the grain size grade number is 6.5. The content of retained austenite increases gradually with the increasing austenitizing temperature, and the content reaches 30% when the temperature is 1200℃.

Original language	English
Pages (from-to)	89-94
Number of pages	6
Journal	Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment
Volume	37
Issue number	7
State	Published - 25 Jul 2016

Keywords

Austenitizing temperature
Carbide
Residual austenite

Cite this

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title = "Effect of austenitizing temperature on microstructure of M50 steel",

abstract = "Effects of austenitizing temperature on carbide dissolution, grain size and retained austenite content of M50 steel were studied by means of electrolytic extraction, optical microscope observation, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that M23C6 and M6C carbides completely dissolve at the austenitizing temperature of 1000℃ and 1100℃. And the type of the residual carbides remains unchanged with the increasing temperature. The phenomenon of individual grain growth occurs at 1120℃, the average grain size reaches 37 μm at 1140℃, and the grain size grade number is 6.5. The content of retained austenite increases gradually with the increasing austenitizing temperature, and the content reaches 30\% when the temperature is 1200℃.",

keywords = "Austenitizing temperature, Carbide, Residual austenite",

author = "Zhou, \{Li Na\} and Tang, \{Guang Ze\} and Ma, \{Xin Xin\} and Wu, \{Ting Bao\} and Fang Ma and Zhao, \{Kai Li\}",

year = "2016",

month = jul,

day = "25",

language = "英语",

volume = "37",

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journal = "Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment",

issn = "1009-6264",

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TY - JOUR

T1 - Effect of austenitizing temperature on microstructure of M50 steel

AU - Zhou, Li Na

AU - Tang, Guang Ze

AU - Ma, Xin Xin

AU - Wu, Ting Bao

AU - Ma, Fang

AU - Zhao, Kai Li

PY - 2016/7/25

Y1 - 2016/7/25

N2 - Effects of austenitizing temperature on carbide dissolution, grain size and retained austenite content of M50 steel were studied by means of electrolytic extraction, optical microscope observation, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that M23C6 and M6C carbides completely dissolve at the austenitizing temperature of 1000℃ and 1100℃. And the type of the residual carbides remains unchanged with the increasing temperature. The phenomenon of individual grain growth occurs at 1120℃, the average grain size reaches 37 μm at 1140℃, and the grain size grade number is 6.5. The content of retained austenite increases gradually with the increasing austenitizing temperature, and the content reaches 30% when the temperature is 1200℃.

AB - Effects of austenitizing temperature on carbide dissolution, grain size and retained austenite content of M50 steel were studied by means of electrolytic extraction, optical microscope observation, scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results show that M23C6 and M6C carbides completely dissolve at the austenitizing temperature of 1000℃ and 1100℃. And the type of the residual carbides remains unchanged with the increasing temperature. The phenomenon of individual grain growth occurs at 1120℃, the average grain size reaches 37 μm at 1140℃, and the grain size grade number is 6.5. The content of retained austenite increases gradually with the increasing austenitizing temperature, and the content reaches 30% when the temperature is 1200℃.

KW - Austenitizing temperature

KW - Carbide

KW - Residual austenite

UR - https://www.scopus.com/pages/publications/85008930134

M3 - 文章

AN - SCOPUS:85008930134

SN - 1009-6264

VL - 37

SP - 89

EP - 94

JO - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

JF - Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment

IS - 7

ER -

Effect of austenitizing temperature on microstructure of M50 steel

Abstract

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