Metallurgical and Materials Transactions A

, Volume 26, Issue 2, pp 407–415

Ductile fracture processes in 7075 aluminum

  • C. P. You
  • A. W. Thompson
  • I. M. Bernstein
Mechanical Behavior

DOI: 10.1007/BF02664677

Cite this article as:
You, C.P., Thompson, A.W. & Bernstein, I.M. MMTA (1995) 26: 407. doi:10.1007/BF02664677

Abstract

The ductile fracture of 7075 aluminum was examined as a function of aging condition, from underaged to overaged. Notched specimens allowed the triaxiality of stress to be varied. In-creasing triaxiality, which was due to increasing notch acuity, decreased ductility and increased nucleation of voids, in accord with expectations from ductile fracture models. Overaged ma-terial, which is generally resistant to environmental damage, was not susceptible to hydrogen embrittlement even with high triaxiality, but void sizes were increased by hydrogen. That in-crease suggested that void growth rates may be assisted by hydrogen in overaged 7075 aluminum.

Copyright information

© The Minerals, Metals & Material Society 1995

Authors and Affiliations

  • C. P. You
    • 1
  • A. W. Thompson
    • 2
  • I. M. Bernstein
    • 3
  1. 1.Truck Operations, DTCFord Motor CompanyAllen Park
  2. 2.Lawrence Berkeley LaboratoryBerkeley
  3. 3.Tufts UniversityMedford