Accession Number:

AD0412465

Title:

FRACTOGRAPHY. PART XI. EXAMINATION OF 7075 T-6 ALUMINUM ALLOY FORGING FRACTURE

Descriptive Note:

Memo rept.

Corporate Author:

NAVAL RESEARCH LAB WASHINGTON DC

Personal Author(s):

• Dahlberg, E. P.

Report Date:

1963-06-01

Pagination or Media Count:

12.0

Abstract:

An intergranular fracture mode was observed by electron microscopy in the crack initiation region of the subject failure indicating that the frac ture resulted from stress corrosion cracking. No evidence of mechanical fatigue crack propa gation was observed.

Descriptors:

• *FATIGUE(MECHANICS)
• *LANDING GEAR
• ALUMINUM ALLOYS
• CRACKING(FRACTURING)
• STRESS CORROSION
• ELECTRON MICROSCOPY
• FRACTOGRAPHY

Subject Categories:

• Properties of Metals and Alloys
• Aircraft
• Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE