Creep behaviors of astm a36 welded joints

Pavaret Preedawiphat, Numpon Mahayotsanun*, Keerati Sa-Ngoen, Mai Noipitak, Pongsak Tuengsook, Sedthawatt Sucharitpwatskul, Kuniaki Dohda

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

This research work aimed to observe the creep behaviors of the ASTM A36 welded joints. The microstructure and hardness of the base zone (BZ), heat affected zone (HAZ), and weld fusion zone (WFZ) were measured. Afterward, the residual stresses on the welded plate were observed to determine any lead to fatigue failure. The hot tensile tests were then performed to investigate the welded specimens' creep behaviors at varied strain rates and temperatures. The power-law model was applied to describe the creep behaviors at each testing condition. Finally, the scanning electron microscopic (SEM) images of the tested specimens were observed to identify breakage causes. The creep results showed that the weakest locations were found in the base (A36) zones. The areas prone to ductile fracture was the base zones close to HAZ.

Original languageEnglish (US)
Pages (from-to)446-455
Number of pages10
JournalEngineering and Applied Science Research
Volume48
Issue number4
DOIs
StatePublished - 2021

Keywords

  • ASTM A36
  • Creep
  • Hot tensile test
  • Weld

ASJC Scopus subject areas

  • Engineering(all)
  • Computer Science Applications

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