Effects of use of higher strength interlayer and external cooling on properties of friction stir welded AA6061-T6 joints


Cam G., Ipekoglu G., Serindag H. T.

SCIENCE AND TECHNOLOGY OF WELDING AND JOINING, vol.19, no.8, pp.715-720, 2014 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 19 Issue: 8
  • Publication Date: 2014
  • Doi Number: 10.1179/1362171814y.0000000247
  • Journal Name: SCIENCE AND TECHNOLOGY OF WELDING AND JOINING
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.715-720
  • Keywords: Friction stir welding, Age hardened Al alloys, Interlayer, External cooling, Mechanical properties, MECHANICAL-PROPERTIES, HEAT-TREATMENT, TENSILE PROPERTIES, MICROSTRUCTURE, LASER, PARAMETERS, TEMPER, BEHAVIOR, PROGRESS, ALLOYS
  • Dokuz Eylül University Affiliated: Yes

Abstract

Although sound AA6061-T6 joints can be produced by friction stir welding, a loss in strength takes place in the weld region. In this study, it was demonstrated that the strength of the nugget could be increased by the use of a higher strength interlayer during friction stir welding. This strength recovery cannot, however, be attainable in the heat affected zone. Although an external cooling was applied during welding in order to increase strength in the heat affected zone, it was not sufficient for achieving the required cooling condition for improved strength.