Laser and GTAW torch processing of Fe-Cr-B coatings on steel: Part I - melt features

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

A comparison of a coating of Fe-Cr-B alloy powder processed on a plain carbon steel by surface melting using either laser or gas tungsten arc welding (GTAW) torch was made. The alloy powder was injected in laser melted surface, while the preplaced powder was melted using the GTAW technique. The topography of the GTAW tracks showed a relatively smooth surface, but the laser track surface was very rough. Because of high energy input, the GTAW method produced very wide and deep tracks with a high dilution compared to those of the laser tracks. Pores and fine cracks were seen in laser tracks; the cracks were elongated across the track width and some of them propagated down to the melt depth. The GTAW track produced at a low energy was free from any cracking, but a centerline crack was present when processed at a high energy input.
LanguageEnglish
Pages1209-1213
JournalMaterials Science and Technology
Volume30
Issue number10
Early online date1 Oct 2013
DOIs
Publication statusPublished - Aug 2014

Fingerprint

gas tungsten arc welding
torches
Tungsten
Steel
Electric arc welding
Gases
steels
coatings
Coatings
Lasers
Powders
Processing
lasers
Cracks
cracks
Topography
Free energy
Dilution
Carbon steel
Melting

Keywords

  • steel
  • coating
  • laser
  • GTAW torch
  • topography
  • depth
  • dilution
  • defects

Cite this

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title = "Laser and GTAW torch processing of Fe-Cr-B coatings on steel: Part I - melt features",
abstract = "A comparison of a coating of Fe-Cr-B alloy powder processed on a plain carbon steel by surface melting using either laser or gas tungsten arc welding (GTAW) torch was made. The alloy powder was injected in laser melted surface, while the preplaced powder was melted using the GTAW technique. The topography of the GTAW tracks showed a relatively smooth surface, but the laser track surface was very rough. Because of high energy input, the GTAW method produced very wide and deep tracks with a high dilution compared to those of the laser tracks. Pores and fine cracks were seen in laser tracks; the cracks were elongated across the track width and some of them propagated down to the melt depth. The GTAW track produced at a low energy was free from any cracking, but a centerline crack was present when processed at a high energy input.",
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author = "A.N. Idriss and Shahjahan Mridha and neville Baker",
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Laser and GTAW torch processing of Fe-Cr-B coatings on steel : Part I - melt features. / Idriss, A.N.; Mridha, Shahjahan; Baker, neville.

In: Materials Science and Technology, Vol. 30, No. 10, 08.2014, p. 1209-1213.

Research output: Contribution to journalArticle

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T1 - Laser and GTAW torch processing of Fe-Cr-B coatings on steel

T2 - Materials Science and Technology

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KW - steel

KW - coating

KW - laser

KW - GTAW torch

KW - topography

KW - depth

KW - dilution

KW - defects

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