Effect of laser shock peening on commercially pure titanium-1 weldment fabricated by gas tungsten arc welding technique

Sandeep Varin; Mayank Agarwal; Aditya Chugh; M. Manikandan; S. Prabhakaran; S. Kalainathan; Pratik Shukla; Jonathan Lawrence; N. Arivazhagan

doi:10.1007/s12666-019-01704-1

Effect of laser shock peening on commercially pure titanium-1 weldment fabricated by gas tungsten arc welding technique

Sandeep Varin, Mayank Agarwal, Aditya Chugh, M. Manikandan^*, S. Prabhakaran, S. Kalainathan, Pratik Shukla, Jonathan Lawrence, N. Arivazhagan^*

^*Corresponding author for this work

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

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Abstract

This research work investigates the effect of laser shock peening (LSP) on commercially pure titanium grade 1 (CP Ti-1) weldment. The welding was done using gas tungsten arc welding (GTAW) with ERTi-2 filler wire. LSP was carried out on the cap surface of the weldment. The optical microstructure showed the Widmanstatten-type martensitic structure in the fusion zone (as-welded). The LSP fusion zone showed a refined microstructure compared to that of as-welded condition. Scanning electron microscope (SEM) of LSP weldment showed the indentation on the surface of the weld. This was a result of the surface ablation that occurred during LSP. X-ray diffraction analysis showed the absence of transformation of phases in the weldment. A reduction of 14.8% of crystalline size was observed in LSP weldment. A higher compressive residual stress was observed in LSP weldment than the as-welded condition. Tensile test showed the occurrence of failure in the base metal region in the case of LSP weldment, as against the failure in the case of as-welded condition in the fusion zone.

Original language	English
Pages (from-to)	1569–1573
Number of pages	5
Journal	Transactions of the Indian Institute of Metals
Volume	72
Issue number	6
Early online date	14 May 2019
DOIs	https://doi.org/10.1007/s12666-019-01704-1
Publication status	Published - 1 Jun 2019
Externally published	Yes

Keywords

commercial pure titanium
gas tungsten arc welding
laser shock peening
residual stress

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10.1007/s12666-019-01704-1

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@article{f7c7c54a299740109b73c2b7f63ab041,

title = "Effect of laser shock peening on commercially pure titanium-1 weldment fabricated by gas tungsten arc welding technique",

abstract = "This research work investigates the effect of laser shock peening (LSP) on commercially pure titanium grade 1 (CP Ti-1) weldment. The welding was done using gas tungsten arc welding (GTAW) with ERTi-2 filler wire. LSP was carried out on the cap surface of the weldment. The optical microstructure showed the Widmanstatten-type martensitic structure in the fusion zone (as-welded). The LSP fusion zone showed a refined microstructure compared to that of as-welded condition. Scanning electron microscope (SEM) of LSP weldment showed the indentation on the surface of the weld. This was a result of the surface ablation that occurred during LSP. X-ray diffraction analysis showed the absence of transformation of phases in the weldment. A reduction of 14.8% of crystalline size was observed in LSP weldment. A higher compressive residual stress was observed in LSP weldment than the as-welded condition. Tensile test showed the occurrence of failure in the base metal region in the case of LSP weldment, as against the failure in the case of as-welded condition in the fusion zone.",

keywords = "commercial pure titanium, gas tungsten arc welding, laser shock peening, residual stress",

author = "Sandeep Varin and Mayank Agarwal and Aditya Chugh and M. Manikandan and S. Prabhakaran and S. Kalainathan and Pratik Shukla and Jonathan Lawrence and N. Arivazhagan",

year = "2019",

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doi = "10.1007/s12666-019-01704-1",

language = "English",

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Varin, S, Agarwal, M, Chugh, A, Manikandan, M, Prabhakaran, S, Kalainathan, S, Shukla, P, Lawrence, J & Arivazhagan, N 2019, 'Effect of laser shock peening on commercially pure titanium-1 weldment fabricated by gas tungsten arc welding technique', Transactions of the Indian Institute of Metals, vol. 72, no. 6, pp. 1569–1573. https://doi.org/10.1007/s12666-019-01704-1

TY - JOUR

T1 - Effect of laser shock peening on commercially pure titanium-1 weldment fabricated by gas tungsten arc welding technique

AU - Varin, Sandeep

AU - Agarwal, Mayank

AU - Chugh, Aditya

AU - Manikandan, M.

AU - Prabhakaran, S.

AU - Kalainathan, S.

AU - Shukla, Pratik

AU - Lawrence, Jonathan

AU - Arivazhagan, N.

PY - 2019/6/1

Y1 - 2019/6/1

N2 - This research work investigates the effect of laser shock peening (LSP) on commercially pure titanium grade 1 (CP Ti-1) weldment. The welding was done using gas tungsten arc welding (GTAW) with ERTi-2 filler wire. LSP was carried out on the cap surface of the weldment. The optical microstructure showed the Widmanstatten-type martensitic structure in the fusion zone (as-welded). The LSP fusion zone showed a refined microstructure compared to that of as-welded condition. Scanning electron microscope (SEM) of LSP weldment showed the indentation on the surface of the weld. This was a result of the surface ablation that occurred during LSP. X-ray diffraction analysis showed the absence of transformation of phases in the weldment. A reduction of 14.8% of crystalline size was observed in LSP weldment. A higher compressive residual stress was observed in LSP weldment than the as-welded condition. Tensile test showed the occurrence of failure in the base metal region in the case of LSP weldment, as against the failure in the case of as-welded condition in the fusion zone.

AB - This research work investigates the effect of laser shock peening (LSP) on commercially pure titanium grade 1 (CP Ti-1) weldment. The welding was done using gas tungsten arc welding (GTAW) with ERTi-2 filler wire. LSP was carried out on the cap surface of the weldment. The optical microstructure showed the Widmanstatten-type martensitic structure in the fusion zone (as-welded). The LSP fusion zone showed a refined microstructure compared to that of as-welded condition. Scanning electron microscope (SEM) of LSP weldment showed the indentation on the surface of the weld. This was a result of the surface ablation that occurred during LSP. X-ray diffraction analysis showed the absence of transformation of phases in the weldment. A reduction of 14.8% of crystalline size was observed in LSP weldment. A higher compressive residual stress was observed in LSP weldment than the as-welded condition. Tensile test showed the occurrence of failure in the base metal region in the case of LSP weldment, as against the failure in the case of as-welded condition in the fusion zone.

KW - commercial pure titanium

KW - gas tungsten arc welding

KW - laser shock peening

KW - residual stress

U2 - 10.1007/s12666-019-01704-1

DO - 10.1007/s12666-019-01704-1

M3 - Article

SN - 0972-2815

VL - 72

SP - 1569

EP - 1573

JO - Transactions of the Indian Institute of Metals

JF - Transactions of the Indian Institute of Metals

IS - 6

ER -

Effect of laser shock peening on commercially pure titanium-1 weldment fabricated by gas tungsten arc welding technique

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Keywords

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