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Residual stress in laser cladded rail

Research output: Contribution to journalArticle

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Residual stress in laser cladded rail. / Narayanan, Aditya; Mostafavi, Mahmoud; Pirling, Thilo; Kabra, S.; Lewis, Roger; Pavier, Martyn; Peel, Matthew.

In: Tribology International, Vol. 140, 105844, 01.12.2019.

Research output: Contribution to journalArticle

Harvard

Narayanan, A, Mostafavi, M, Pirling, T, Kabra, S, Lewis, R, Pavier, M & Peel, M 2019, 'Residual stress in laser cladded rail', Tribology International, vol. 140, 105844. https://doi.org/10.1016/j.triboint.2019.105844

APA

Narayanan, A., Mostafavi, M., Pirling, T., Kabra, S., Lewis, R., Pavier, M., & Peel, M. (2019). Residual stress in laser cladded rail. Tribology International, 140, [105844]. https://doi.org/10.1016/j.triboint.2019.105844

Vancouver

Narayanan A, Mostafavi M, Pirling T, Kabra S, Lewis R, Pavier M et al. Residual stress in laser cladded rail. Tribology International. 2019 Dec 1;140. 105844. https://doi.org/10.1016/j.triboint.2019.105844

Author

Narayanan, Aditya ; Mostafavi, Mahmoud ; Pirling, Thilo ; Kabra, S. ; Lewis, Roger ; Pavier, Martyn ; Peel, Matthew. / Residual stress in laser cladded rail. In: Tribology International. 2019 ; Vol. 140.

Bibtex

@article{283a6b759a7342a5997efe2462f5ffe3,
title = "Residual stress in laser cladded rail",
abstract = "To improve the fatigue life of components subject to loads with high surface strain gradients, it is possible to coat them with an alloy of higher durability. The present study focuses on the effect of cladding high value track components, made of a standard rail steel UIC 900A/grade 260, with a layer of a premium martensitic stainless steel to reduce wear and fatigue. The laser cladding process inevitably generates residual stresses in the clad and parent metal, which could be detrimental to the integrity of the component. Therefore, measurements to determine the residual stress state of cladded rail were performed using semi-destructive centre-hole and deep hole drilling and non-destructive neutron diffraction techniques. Subsequently, the effects of cycling loading and wear, representative of typical service loads, on the redistribution of the residual stress field were investigated. It was observed that laser cladding causes a triaxial compressive residual stress field in the clad and near the interface and a tensile stress field in the parent material. The stress field is shown to change when the first cycle of load is applied but reaches a steady state after only 10 cycles: After the 10th cycle there is no evidence that the clad continues accumulating strain which could indicate that there is low risk of ratcheting. Wear effect on residual stress redistribution was found to be local on the surface of the specimen only.",
keywords = "Integrity, Residual stress, Laser clad, Rail",
author = "Aditya Narayanan and Mahmoud Mostafavi and Thilo Pirling and S. Kabra and Roger Lewis and Martyn Pavier and Matthew Peel",
year = "2019",
month = "6",
day = "25",
doi = "10.1016/j.triboint.2019.105844",
language = "English",
volume = "140",
journal = "Tribology International",
issn = "0301-679X",
publisher = "Elsevier Inc.",

}

RIS - suitable for import to EndNote

TY - JOUR

T1 - Residual stress in laser cladded rail

AU - Narayanan, Aditya

AU - Mostafavi, Mahmoud

AU - Pirling, Thilo

AU - Kabra, S.

AU - Lewis, Roger

AU - Pavier, Martyn

AU - Peel, Matthew

PY - 2019/6/25

Y1 - 2019/6/25

N2 - To improve the fatigue life of components subject to loads with high surface strain gradients, it is possible to coat them with an alloy of higher durability. The present study focuses on the effect of cladding high value track components, made of a standard rail steel UIC 900A/grade 260, with a layer of a premium martensitic stainless steel to reduce wear and fatigue. The laser cladding process inevitably generates residual stresses in the clad and parent metal, which could be detrimental to the integrity of the component. Therefore, measurements to determine the residual stress state of cladded rail were performed using semi-destructive centre-hole and deep hole drilling and non-destructive neutron diffraction techniques. Subsequently, the effects of cycling loading and wear, representative of typical service loads, on the redistribution of the residual stress field were investigated. It was observed that laser cladding causes a triaxial compressive residual stress field in the clad and near the interface and a tensile stress field in the parent material. The stress field is shown to change when the first cycle of load is applied but reaches a steady state after only 10 cycles: After the 10th cycle there is no evidence that the clad continues accumulating strain which could indicate that there is low risk of ratcheting. Wear effect on residual stress redistribution was found to be local on the surface of the specimen only.

AB - To improve the fatigue life of components subject to loads with high surface strain gradients, it is possible to coat them with an alloy of higher durability. The present study focuses on the effect of cladding high value track components, made of a standard rail steel UIC 900A/grade 260, with a layer of a premium martensitic stainless steel to reduce wear and fatigue. The laser cladding process inevitably generates residual stresses in the clad and parent metal, which could be detrimental to the integrity of the component. Therefore, measurements to determine the residual stress state of cladded rail were performed using semi-destructive centre-hole and deep hole drilling and non-destructive neutron diffraction techniques. Subsequently, the effects of cycling loading and wear, representative of typical service loads, on the redistribution of the residual stress field were investigated. It was observed that laser cladding causes a triaxial compressive residual stress field in the clad and near the interface and a tensile stress field in the parent material. The stress field is shown to change when the first cycle of load is applied but reaches a steady state after only 10 cycles: After the 10th cycle there is no evidence that the clad continues accumulating strain which could indicate that there is low risk of ratcheting. Wear effect on residual stress redistribution was found to be local on the surface of the specimen only.

KW - Integrity

KW - Residual stress

KW - Laser clad

KW - Rail

UR - http://www.scopus.com/inward/record.url?scp=85067786791&partnerID=8YFLogxK

U2 - 10.1016/j.triboint.2019.105844

DO - 10.1016/j.triboint.2019.105844

M3 - Article

VL - 140

JO - Tribology International

JF - Tribology International

SN - 0301-679X

M1 - 105844

ER -