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Influence of laser dispersed treatment on rolling contact wear and fatigue behavior of railway wheel steel
Zeng DF; Lu LT; Li ZY(李正阳); Zhang JW; Jin XS; Zhu MH; Lu, LT (reprint author), Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Peoples R China.
Source PublicationMATERIALS & DESIGN
2014-02
Volume54Pages:137-143
ISSN0261-3069
AbstractThe aim of this paper is to improve the rolling contact wear and fatigue resistance of ferrite-pearlite railway wheel steel by laser dispersed treatment. Such treatment creates isolated glazed regions on the surface layer of railway wheel steel, which are composed of fine martensite and retained austenite and have an average hardness of 762HV(0.3). The wear rate and rolling contact fatigue life of treated and untreated railway wheel steel were evaluated and compared by Amsler twin-disc testing machines in dry and lubricated condition, respectively. The test results show that laser dispersed treatment improves the rolling contact wear and fatigue resistance of railway wheel steel. The stable wear rate of the laser treated railway wheel steel is about 0.3 times that of untreated railway wheel steel and the average rolling contact life of treated railway wheel steel is about double that of the untreated steel. Further investigations show that the glazed regions suppress the plastic deformation of railway wheel steel. This inhibits the treated railway wheel steel from delamination wear and delays the formation of fatigue crack initiation.
KeywordFailure Fatigue Of Materials Friction Vehicle Wheels Delamination Wear Fatigue Crack Initiation Fatigue Life Rolling Contact Wears
Subject Area疲劳与断裂力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000328690400018
Funding OrganizationNational Key Technology RD Program [2009BAG12A01-B10-1]; Ministry of Railway of China [2009J015]; Basic Research Association Foundation of High - speed Rail [U 1134202]
DepartmentMAMYAG激光毛化技术
Classification二类/Q1
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/48075
Collection先进制造工艺力学重点实验室
Corresponding AuthorLu, LT (reprint author), Southwest Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Peoples R China.
Recommended Citation
GB/T 7714
Zeng DF,Lu LT,Li ZY,et al. Influence of laser dispersed treatment on rolling contact wear and fatigue behavior of railway wheel steel[J]. MATERIALS & DESIGN,2014,54:137-143.
APA Zeng DF.,Lu LT.,李正阳.,Zhang JW.,Jin XS.,...&Lu, LT .(2014).Influence of laser dispersed treatment on rolling contact wear and fatigue behavior of railway wheel steel.MATERIALS & DESIGN,54,137-143.
MLA Zeng DF,et al."Influence of laser dispersed treatment on rolling contact wear and fatigue behavior of railway wheel steel".MATERIALS & DESIGN 54(2014):137-143.
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