Processing of aluminum 7075-T73 components after prolonged storage

Conference · Sat Jun 01 00:00:00 EDT 1996

OSTI ID:238351

Guilinger, T R; Stevenson, J O; Yang, R G; Buchheit, R G; Schmale, D T; Shin, K; Martinez, F E ^[1]; Webb, L; Stimetz, C J ^[2]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Allied-Signal Aerospace Co., Kansas City, MO (United States). Kansas City Div.

Three years ago, production requirements for a T73-tempered aluminium 7075 (Al 7075-T73) component were curtailed and the ``in-process`` parts were stored. During recent attempts to complete processing, visible defects were discovered in this component. Defects at such an early stage in the 20+ year lifetime of the component pose reliability concerns. Chemical and microstructural analysis, mechanical testing, and corrosion evaluation were performed to determine the impact of the defects on material properties.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 238351
• Report Number(s): SAND--96-1146C; CONF-9604125--5; ON: DE96010560
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
DEFECTS
TESTING