Effect of rare earth addition on microstructure and corrosion behavior of plasma nitrocarburized M50NiL steel

Xing'an WANG; Mufu YAN; Ruiliang LIU; Yanxiang ZHANG

doi:10.1016/S1002-0721(16)60147-3

Effect of rare earth addition on microstructure and corrosion behavior of plasma nitrocarburized M50NiL steel

Xing'an WANG
, Mufu YAN^*
, Ruiliang LIU
, Yanxiang ZHANG

^*Corresponding author for this work

Harbin Institute of Technology
College of Materials Science and Chemical Engineering, Harbin Engineering University

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

43 Scopus citations

Abstract

M50NiL steel was plasma nitrocarburized at 480 °C with and without rare earth (RE) addition. The microstructures of the surface layer were characterized by optical microscopy, X-ray diffraction and scanning electron microscopy. The mechanical properties and corrosion resistances of the surface layer were studied by Vickers microhardness measurements and polarization tests in 3.5% NaCl solution. The results showed that RE atoms could diffuse into the surface layer of the steel and inhabit the formation of ε-Fe_2–3(N,C) phase. As compared to the treatment without RE addition, RE addition further increased the surface hardness by 143 HV0.1, and further increased the thickness of the nitrocarburized layer by 39 μm. Compared with the quenched bearing steel, the corrosion resistance of the samples nitrocarburized with and without RE addition could be significantly improved. Especially, the sample plasma nitrocarburized with RE addition exhibited the highest corrosion resistance.

Original language	English
Pages (from-to)	1148-1155
Number of pages	8
Journal	Journal of Rare Earths
Volume	34
Issue number	11
DOIs	https://doi.org/10.1016/S1002-0721(16)60147-3
State	Published - 1 Nov 2016
Externally published	Yes

Keywords

M50NiL steel
corrosion resistance
microstructure
plasma nitrocarburizing
rare earths

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10.1016/S1002-0721(16)60147-3

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title = "Effect of rare earth addition on microstructure and corrosion behavior of plasma nitrocarburized M50NiL steel",

abstract = "M50NiL steel was plasma nitrocarburized at 480 °C with and without rare earth (RE) addition. The microstructures of the surface layer were characterized by optical microscopy, X-ray diffraction and scanning electron microscopy. The mechanical properties and corrosion resistances of the surface layer were studied by Vickers microhardness measurements and polarization tests in 3.5\% NaCl solution. The results showed that RE atoms could diffuse into the surface layer of the steel and inhabit the formation of ε-Fe2–3(N,C) phase. As compared to the treatment without RE addition, RE addition further increased the surface hardness by 143 HV0.1, and further increased the thickness of the nitrocarburized layer by 39 μm. Compared with the quenched bearing steel, the corrosion resistance of the samples nitrocarburized with and without RE addition could be significantly improved. Especially, the sample plasma nitrocarburized with RE addition exhibited the highest corrosion resistance.",

keywords = "M50NiL steel, corrosion resistance, microstructure, plasma nitrocarburizing, rare earths",

author = "Xing'an WANG and Mufu YAN and Ruiliang LIU and Yanxiang ZHANG",

note = "Publisher Copyright: {\textcopyright} 2016 The Chinese Society of Rare Earths",

year = "2016",

month = nov,

day = "1",

doi = "10.1016/S1002-0721(16)60147-3",

language = "英语",

volume = "34",

pages = "1148--1155",

journal = "Journal of Rare Earths",

issn = "1002-0721",

publisher = "Editorial Office of Chinese Rare Earths",

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TY - JOUR

T1 - Effect of rare earth addition on microstructure and corrosion behavior of plasma nitrocarburized M50NiL steel

AU - WANG, Xing'an

AU - YAN, Mufu

AU - LIU, Ruiliang

AU - ZHANG, Yanxiang

PY - 2016/11/1

Y1 - 2016/11/1

N2 - M50NiL steel was plasma nitrocarburized at 480 °C with and without rare earth (RE) addition. The microstructures of the surface layer were characterized by optical microscopy, X-ray diffraction and scanning electron microscopy. The mechanical properties and corrosion resistances of the surface layer were studied by Vickers microhardness measurements and polarization tests in 3.5% NaCl solution. The results showed that RE atoms could diffuse into the surface layer of the steel and inhabit the formation of ε-Fe2–3(N,C) phase. As compared to the treatment without RE addition, RE addition further increased the surface hardness by 143 HV0.1, and further increased the thickness of the nitrocarburized layer by 39 μm. Compared with the quenched bearing steel, the corrosion resistance of the samples nitrocarburized with and without RE addition could be significantly improved. Especially, the sample plasma nitrocarburized with RE addition exhibited the highest corrosion resistance.

AB - M50NiL steel was plasma nitrocarburized at 480 °C with and without rare earth (RE) addition. The microstructures of the surface layer were characterized by optical microscopy, X-ray diffraction and scanning electron microscopy. The mechanical properties and corrosion resistances of the surface layer were studied by Vickers microhardness measurements and polarization tests in 3.5% NaCl solution. The results showed that RE atoms could diffuse into the surface layer of the steel and inhabit the formation of ε-Fe2–3(N,C) phase. As compared to the treatment without RE addition, RE addition further increased the surface hardness by 143 HV0.1, and further increased the thickness of the nitrocarburized layer by 39 μm. Compared with the quenched bearing steel, the corrosion resistance of the samples nitrocarburized with and without RE addition could be significantly improved. Especially, the sample plasma nitrocarburized with RE addition exhibited the highest corrosion resistance.

KW - M50NiL steel

KW - corrosion resistance

KW - microstructure

KW - plasma nitrocarburizing

KW - rare earths

UR - https://www.scopus.com/pages/publications/84994143403

U2 - 10.1016/S1002-0721(16)60147-3

DO - 10.1016/S1002-0721(16)60147-3

M3 - 文章

AN - SCOPUS:84994143403

SN - 1002-0721

VL - 34

SP - 1148

EP - 1155

JO - Journal of Rare Earths

JF - Journal of Rare Earths

IS - 11

ER -

Effect of rare earth addition on microstructure and corrosion behavior of plasma nitrocarburized M50NiL steel

Abstract

Keywords

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