Mechanical properties and dry-sliding tribological behavior of partially twinned Fe 70Ni 30 alloy

Yonghai Kang; Jun Yang; Licai Fu; Qinling Bi; Weimin Liu

doi:10.1016/j.wear.2011.10.003

Mechanical properties and dry-sliding tribological behavior of partially twinned Fe ₇₀Ni ₃₀ alloy

Yonghai Kang, Jun Yang, Licai Fu, Qinling Bi, Weimin Liu

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

10 Scopus citations

Abstract

The mechanical properties and wear behavior of an Fe ₇₀Ni ₃₀ alloy with twinned martensite structure obtained by deep cryogenic treatment at -196°c (DCT) were evaluated in comparison with that of coarse-grained (CG) Fe ₇₀Ni ₃₀ alloy (single austenite phase). The results showed that after the introduction of martensite with nano-scale twins, the Vickers hardness of Fe ₇₀Ni ₃₀ increased from 145 to 248Hv. The friction coefficient of both samples was almost the same, and it decreased with increasing applied load and increased with increasing sliding speed. The XPS results indicated that oxide protecting film was formed on the worn surface, which may dominate the friction coefficient. The wear rate for both samples increased with increasing applied load and decreased slightly with increasing sliding speed. The wear resistance of DCT-Fe ₇₀Ni ₃₀ alloy was obviously enhanced. The wear mechanisms were investigated by SEM accordingly.

Original language	English
Pages (from-to)	395-400
Number of pages	6
Journal	Wear
Volume	274-275
DOIs	https://doi.org/10.1016/j.wear.2011.10.003
State	Published - 27 Jan 2012
Externally published	Yes

Keywords

Hardness
Sliding friction
Sliding wear
Wear testing

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10.1016/j.wear.2011.10.003

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title = "Mechanical properties and dry-sliding tribological behavior of partially twinned Fe 70Ni 30 alloy",

abstract = "The mechanical properties and wear behavior of an Fe 70Ni 30 alloy with twinned martensite structure obtained by deep cryogenic treatment at -196°c (DCT) were evaluated in comparison with that of coarse-grained (CG) Fe 70Ni 30 alloy (single austenite phase). The results showed that after the introduction of martensite with nano-scale twins, the Vickers hardness of Fe 70Ni 30 increased from 145 to 248Hv. The friction coefficient of both samples was almost the same, and it decreased with increasing applied load and increased with increasing sliding speed. The XPS results indicated that oxide protecting film was formed on the worn surface, which may dominate the friction coefficient. The wear rate for both samples increased with increasing applied load and decreased slightly with increasing sliding speed. The wear resistance of DCT-Fe 70Ni 30 alloy was obviously enhanced. The wear mechanisms were investigated by SEM accordingly.",

keywords = "Hardness, Sliding friction, Sliding wear, Wear testing",

author = "Yonghai Kang and Jun Yang and Licai Fu and Qinling Bi and Weimin Liu",

year = "2012",

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doi = "10.1016/j.wear.2011.10.003",

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volume = "274-275",

pages = "395--400",

journal = "Wear",

issn = "0043-1648",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Mechanical properties and dry-sliding tribological behavior of partially twinned Fe 70Ni 30 alloy

AU - Kang, Yonghai

AU - Yang, Jun

AU - Fu, Licai

AU - Bi, Qinling

AU - Liu, Weimin

PY - 2012/1/27

Y1 - 2012/1/27

N2 - The mechanical properties and wear behavior of an Fe 70Ni 30 alloy with twinned martensite structure obtained by deep cryogenic treatment at -196°c (DCT) were evaluated in comparison with that of coarse-grained (CG) Fe 70Ni 30 alloy (single austenite phase). The results showed that after the introduction of martensite with nano-scale twins, the Vickers hardness of Fe 70Ni 30 increased from 145 to 248Hv. The friction coefficient of both samples was almost the same, and it decreased with increasing applied load and increased with increasing sliding speed. The XPS results indicated that oxide protecting film was formed on the worn surface, which may dominate the friction coefficient. The wear rate for both samples increased with increasing applied load and decreased slightly with increasing sliding speed. The wear resistance of DCT-Fe 70Ni 30 alloy was obviously enhanced. The wear mechanisms were investigated by SEM accordingly.

AB - The mechanical properties and wear behavior of an Fe 70Ni 30 alloy with twinned martensite structure obtained by deep cryogenic treatment at -196°c (DCT) were evaluated in comparison with that of coarse-grained (CG) Fe 70Ni 30 alloy (single austenite phase). The results showed that after the introduction of martensite with nano-scale twins, the Vickers hardness of Fe 70Ni 30 increased from 145 to 248Hv. The friction coefficient of both samples was almost the same, and it decreased with increasing applied load and increased with increasing sliding speed. The XPS results indicated that oxide protecting film was formed on the worn surface, which may dominate the friction coefficient. The wear rate for both samples increased with increasing applied load and decreased slightly with increasing sliding speed. The wear resistance of DCT-Fe 70Ni 30 alloy was obviously enhanced. The wear mechanisms were investigated by SEM accordingly.

KW - Hardness

KW - Sliding friction

KW - Sliding wear

KW - Wear testing

UR - http://www.scopus.com/inward/record.url?scp=84855279958&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2011.10.003

DO - 10.1016/j.wear.2011.10.003

M3 - 文章

AN - SCOPUS:84855279958

SN - 0043-1648

VL - 274-275

SP - 395

EP - 400

JO - Wear

JF - Wear

ER -

Mechanical properties and dry-sliding tribological behavior of partially twinned Fe ₇₀Ni ₃₀ alloy

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Keywords

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