The effect of post weld heat treatment on welds in steel structures

Pertti Auerkari, Pekka Gren, Kim Wallin

Research output: Book/ReportReport

Abstract

The effect of post weld heat treatment (PWHT) on residual stresses, yield strength and toughness as well as on microstructural features of submerged are weld metal was studied with three types of C-Mn-steels. All techniques used for measuring residual stress reduction in PWHT were found insufficient to adequately characterise the stress distribution. The yield and ultimate strength were not significantly affected by the PWHT (600 °C/2 h) applied. No improvement in the toughness as determined by the COD was found. Slight coarsening of the microstructure was, however, observed. With the submerged are welding method and the C-Mn-steels used in this study no other advantages of PWHT can be expected than reduced risk to brittle fracture through stress relief.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages44
ISBN (Print)951-38-1849-7
Publication statusPublished - 1983
MoE publication typeD4 Published development or research report or study

Publication series

SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
Number217
ISSN0358-5077

Fingerprint

Steel structures
Welds
Heat treatment
Toughness
Residual stresses
Stress relief
Steel
Brittle fracture
Coarsening
Yield stress
Stress concentration
Welding
Microstructure
Metals

Keywords

  • stress relieving
  • fracture toughness
  • welded joints
  • submerged arc
  • welding
  • steel construction

Cite this

Auerkari, P., Gren, P., & Wallin, K. (1983). The effect of post weld heat treatment on welds in steel structures. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 217
Auerkari, Pertti ; Gren, Pekka ; Wallin, Kim. / The effect of post weld heat treatment on welds in steel structures. Espoo : VTT Technical Research Centre of Finland, 1983. 44 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 217).
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Auerkari, P, Gren, P & Wallin, K 1983, The effect of post weld heat treatment on welds in steel structures. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 217, VTT Technical Research Centre of Finland, Espoo.

The effect of post weld heat treatment on welds in steel structures. / Auerkari, Pertti; Gren, Pekka; Wallin, Kim.

Espoo : VTT Technical Research Centre of Finland, 1983. 44 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 217).

Research output: Book/ReportReport

TY - BOOK

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AU - Gren, Pekka

AU - Wallin, Kim

PY - 1983

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AB - The effect of post weld heat treatment (PWHT) on residual stresses, yield strength and toughness as well as on microstructural features of submerged are weld metal was studied with three types of C-Mn-steels. All techniques used for measuring residual stress reduction in PWHT were found insufficient to adequately characterise the stress distribution. The yield and ultimate strength were not significantly affected by the PWHT (600 °C/2 h) applied. No improvement in the toughness as determined by the COD was found. Slight coarsening of the microstructure was, however, observed. With the submerged are welding method and the C-Mn-steels used in this study no other advantages of PWHT can be expected than reduced risk to brittle fracture through stress relief.

KW - stress relieving

KW - fracture toughness

KW - welded joints

KW - submerged arc

KW - welding

KW - steel construction

M3 - Report

SN - 951-38-1849-7

T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports

BT - The effect of post weld heat treatment on welds in steel structures

PB - VTT Technical Research Centre of Finland

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ER -

Auerkari P, Gren P, Wallin K. The effect of post weld heat treatment on welds in steel structures. Espoo: VTT Technical Research Centre of Finland, 1983. 44 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 217).