Ductile fracture processes in 7075 aluminum
- Cite this article as:
- You, C.P., Thompson, A.W. & Bernstein, I.M. MMTA (1995) 26: 407. doi:10.1007/BF02664677
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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.