Ductile fracture processes in 7075 aluminum

Journal Article · Wed Feb 01 04:00:00 EST 1995 · Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States)

DOI:https://doi.org/10.1007/BF02664677· OSTI ID:6609206

You, C P ^[1]; Thompson, A W ^[2]; Bernstein, I M ^[3]

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1. Ford Motor Co., Allen Park, MI (United States)
2. Lawrence Berkeley Lab., CA (United States)
3. Tufts Univ., Medford, MA (United States)

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. Increasing triaxiality, which was due to increasing notch acuity, decreased ductility and increased nucleation of voids, in accord with expectations from ductile fracture models. Overaged material, 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 increase suggested that void growth rates may be assisted by hydrogen in overaged 7075 aluminum.

• OSTI ID: 6609206
• Journal Information: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States), Journal Name: Metallurgical Transactions, A (Physical Metallurgy and Materials Science); (United States) Vol. 26:2; ISSN 0360-2133; ISSN MTTABN
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM BASE ALLOYS
DATA
EMBRITTLEMENT
EXPERIMENTAL DATA
FAILURES
FRACTURE PROPERTIES
HYDROGEN EMBRITTLEMENT
INFORMATION
MATHEMATICAL MODELS
MECHANICAL PROPERTIES
NUMERICAL DATA