Residual Stresses of the Laser Welded Abrasion Resistant Steel Butt Joints

Mikko Hietala; Markku Keskitalo; Antti Järvenpää

doi:10.4028/p-WJkn5S

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HomeMaterials Science ForumMaterials Science Forum Vol. 1101Residual Stresses of the Laser Welded Abrasion...

Residual Stresses of the Laser Welded Abrasion Resistant Steel Butt Joints

Abstract:

This paper investigates residual stresses of the laser welded abrasion resistant steel butt joints. X-ray diffraction (XRD) was used to measure the residual stresses of the laser welded joints. The geometry and mechanical properties of the joints were also investigated. The weld metal hardness of the weld made with the lowest welding energy corresponded to the hardness of the base material. The welding energy had a significant effect on the hardness profiles of the welds. With the lowest welding energy, the tensile strength reached a strength corresponding to the yield strength of the base material. The residual stress results perpendicular to the weld corresponded well to the hardness profiles of the joints. The residual stresses were mainly tensile stress. The measured maximum residual stresses were 480 MPa.

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Periodical:

Materials Science Forum (Volume 1101)

Pages:

89-94

DOI:

https://doi.org/10.4028/p-WJkn5S

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Online since:

October 2023

Authors:

Mikko Hietala*, Markku Keskitalo, Antti Järvenpää

Keywords:

Abrasion Resistant Steel, Butt Joint, Laser Welding, Residual Stress, Ultra-High-Strength Steel

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