Accession Number:

AD0748257

Title:

Fracture Toughness and Fatigue Crack Growth Properties of 7175-T736 Aluminum Alloy Forging at Several Temperatures

Descriptive Note:

Final rept. Jun 1970-May 1971

Corporate Author:

DAYTON UNIV OH RESEARCH INST

Personal Author(s):

Report Date:

1972-02-01

Pagination or Media Count:

37.0

Abstract:

Tensile, fracture toughness, and crack growth properties of a 7175-T736 aluminum alloy forging were investigated at various temperatures from -65 deg F to 350 deg F. Room temperature tensile and fracture toughness data was compared to similar properties for wrought 7075 products. The 7175 appears to be a better alloys. Fatigue crack growth rates at room temperature were similar to 7075-T6 and 7075-T7352 crack growth data in the literature. Crack growth rates increased with increasing temperature from room temperature to 350 deg F. Crack growth rates below room temperature were probably affected by humidity variations causing condensation of moisture at the crack tip and results were inconsistent.

Subject Categories:

  • Aircraft
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE