Thickness dependent yielding behavior and formability of AA6082-T6 alloy: experimental observation and modeling


ÇAVUŞOĞLU O., Surucu H. I. , Toros S., Alkan M.

INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY, vol.106, pp.4083-4091, 2020 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 106
  • Publication Date: 2020
  • Doi Number: 10.1007/s00170-019-04878-6
  • Journal Name: INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
  • Journal Indexes: Science Citation Index Expanded, Scopus, Academic Search Premier, IBZ Online, Compendex, INSPEC, DIALNET
  • Page Numbers: pp.4083-4091

Abstract

This study analyzes thickness-dependent of the yielding behavior and forming limit diagrams (FLDs) of the AA6082-T6 aluminum alloy sheet. Mechanical behavior of the materials of 1 and 1.5 mm sheet thickness is observed having performed anisotropy and tensile tests at 0 degrees, 15 degrees, 30 degrees, 45 degrees, 60 degrees, 75 degrees, and 90 degrees to the rolling direction. By using Hill-48 and Barlat-89 yield criteria, r-value and yield stress relations were defined and yield loci were obtained. Forming limit diagrams were created using experimental data and Marciniak-Kuczynski (MK) model. It was observed that increased sheet thickness also increases anisotropy while decreasing yield stress; yield locus was found to be smaller. The formability of the material increased as the sheet thickness increases.