Improvement of Fatigue Characteristics of Friction Stir Welded A6061- T6 Applying Shot Peening

Sang Hyun Park, Hyungseok Nam, Ki Woo Nam

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

Abstract

Recently, researchers have developed the method as a harmless the crack by the surface modification. For the purpose of contributing to reliability improvement of the A6061-T6 structure by harmless method, the following research was carried out: The tensile residual stress of friction stir welding was added by shot peening, resulting in a more significant compressive residual stress than that of the base metal. The effect of the surface crack aspect ratio on the maximum harmless crack depth (ahml) of A6061-T6 was evaluated for residual stress distribution. The detectable depth was evaluated in the relationship between ahml and the maximum detectable crack depth (aNDI) by nondestructive inspection (NDI).

Original languageEnglish
Title of host publicationKey Engineering Materials
PublisherTrans Tech Publications Ltd.
Pages75-86
Number of pages12
DOIs
StatePublished - 2024

Publication series

NameKey Engineering Materials
Volume994
ISSN (Print)1013-9826
ISSN (Electronic)1662-9795

Keywords

  • A6061-T6 alloy
  • fatigue
  • friction stir welding
  • residual stress
  • shot peening
  • surface crack harmless

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