Effects of sigma phase and carbide on the wear behavior of CoCrMo alloys in Hanks' solution

Yan Chen; Yunping Li; Shingo Kurosu; Kenta Yamanaka; Ning Tang; Yuichiro Koizumi; Akihiko Chiba

doi:10.1016/j.wear.2013.12.010

Effects of sigma phase and carbide on the wear behavior of CoCrMo alloys in Hanks' solution

Yan Chen, Yunping Li, Shingo Kurosu, Kenta Yamanaka, Ning Tang, Yuichiro Koizumi, Akihiko Chiba

Materials Processing and Characterization Division

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

63 Citations (Scopus)

Abstract

This study aims to elucidate the synergy effects of the σ phase and carbide on the wear behavior of low-carbon (LC) and high-carbon (HC) cobalt-chromium-molybdenum (CoCrMo) alloys, by using pin-on-disc tests under Hanks' lubricated conditions. Fractured or torn-off σ-phase precipitates were observed to be the main reason for abrasion for both LC and HC alloys. Carbides were torn off at the initial high contact pressure to form pitting; σ-phase precipitates around the pitting were uprooted and led to micro cracks, which is considered as surface fatigue of HC alloy. In contrast, strain-induced martensite observed on the worn surface was contributed to the increase of hardness and abrasion resistance of LC alloy.

Original language	English
Pages (from-to)	51-62
Number of pages	12
Journal	WEAR
Volume	310
Issue number	1-2
DOIs	https://doi.org/10.1016/j.wear.2013.12.010
Publication status	Published - 2014 Feb 15

Keywords

Carbide
CoCrMo alloy
Contact mechanics
Surface fatigue
Wear behavior
σ phase

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Surfaces and Interfaces
Surfaces, Coatings and Films
Materials Chemistry

Access to Document

10.1016/j.wear.2013.12.010

Cite this

@article{b176eed41e75459a8ae8b5399a19335f,

title = "Effects of sigma phase and carbide on the wear behavior of CoCrMo alloys in Hanks' solution",

abstract = "This study aims to elucidate the synergy effects of the σ phase and carbide on the wear behavior of low-carbon (LC) and high-carbon (HC) cobalt-chromium-molybdenum (CoCrMo) alloys, by using pin-on-disc tests under Hanks' lubricated conditions. Fractured or torn-off σ-phase precipitates were observed to be the main reason for abrasion for both LC and HC alloys. Carbides were torn off at the initial high contact pressure to form pitting; σ-phase precipitates around the pitting were uprooted and led to micro cracks, which is considered as surface fatigue of HC alloy. In contrast, strain-induced martensite observed on the worn surface was contributed to the increase of hardness and abrasion resistance of LC alloy.",

keywords = "Carbide, CoCrMo alloy, Contact mechanics, Surface fatigue, Wear behavior, σ phase",

author = "Yan Chen and Yunping Li and Shingo Kurosu and Kenta Yamanaka and Ning Tang and Yuichiro Koizumi and Akihiko Chiba",

note = "Funding Information: The authors gratefully acknowledge the financial support of the Ministry of Education, Culture, Sports, Science and Technology of Japan , as part of the Regional Innovation Cluster Program 2010. The authors also acknowledge I. Narida, Y. Kodama and S. Ito for assistance with the EPMA, FIB and TEM assistance, respectively.",

year = "2014",

month = feb,

day = "15",

doi = "10.1016/j.wear.2013.12.010",

language = "English",

volume = "310",

pages = "51--62",

journal = "Wear",

issn = "0043-1648",

publisher = "Elsevier BV",

number = "1-2",

}

TY - JOUR

T1 - Effects of sigma phase and carbide on the wear behavior of CoCrMo alloys in Hanks' solution

AU - Chen, Yan

AU - Li, Yunping

AU - Kurosu, Shingo

AU - Yamanaka, Kenta

AU - Tang, Ning

AU - Koizumi, Yuichiro

AU - Chiba, Akihiko

N1 - Funding Information: The authors gratefully acknowledge the financial support of the Ministry of Education, Culture, Sports, Science and Technology of Japan , as part of the Regional Innovation Cluster Program 2010. The authors also acknowledge I. Narida, Y. Kodama and S. Ito for assistance with the EPMA, FIB and TEM assistance, respectively.

PY - 2014/2/15

Y1 - 2014/2/15

N2 - This study aims to elucidate the synergy effects of the σ phase and carbide on the wear behavior of low-carbon (LC) and high-carbon (HC) cobalt-chromium-molybdenum (CoCrMo) alloys, by using pin-on-disc tests under Hanks' lubricated conditions. Fractured or torn-off σ-phase precipitates were observed to be the main reason for abrasion for both LC and HC alloys. Carbides were torn off at the initial high contact pressure to form pitting; σ-phase precipitates around the pitting were uprooted and led to micro cracks, which is considered as surface fatigue of HC alloy. In contrast, strain-induced martensite observed on the worn surface was contributed to the increase of hardness and abrasion resistance of LC alloy.

AB - This study aims to elucidate the synergy effects of the σ phase and carbide on the wear behavior of low-carbon (LC) and high-carbon (HC) cobalt-chromium-molybdenum (CoCrMo) alloys, by using pin-on-disc tests under Hanks' lubricated conditions. Fractured or torn-off σ-phase precipitates were observed to be the main reason for abrasion for both LC and HC alloys. Carbides were torn off at the initial high contact pressure to form pitting; σ-phase precipitates around the pitting were uprooted and led to micro cracks, which is considered as surface fatigue of HC alloy. In contrast, strain-induced martensite observed on the worn surface was contributed to the increase of hardness and abrasion resistance of LC alloy.

KW - Carbide

KW - CoCrMo alloy

KW - Contact mechanics

KW - Surface fatigue

KW - Wear behavior

KW - σ phase

UR - http://www.scopus.com/inward/record.url?scp=84892610030&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84892610030&partnerID=8YFLogxK

U2 - 10.1016/j.wear.2013.12.010

DO - 10.1016/j.wear.2013.12.010

M3 - Article

AN - SCOPUS:84892610030

SN - 0043-1648

VL - 310

SP - 51

EP - 62

JO - Wear

JF - Wear

IS - 1-2

ER -

Effects of sigma phase and carbide on the wear behavior of CoCrMo alloys in Hanks' solution

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this