Accession Number:

ADP013491

Title:

Effects of Shot Peening Processing on the Fatigue Behavior of Three Aluminum Alloys and TI-AL-4V

Descriptive Note:

Conference paper

Corporate Author:

ARMY RESEARCH LAB ABERDEEN PROVING GROUND MD WEAPONS AND MATERIALS RESEARCH DIRECTORATE

Personal Author(s):

Report Date:

2001-04-05

Pagination or Media Count:

7.0

Abstract:

The fatigue strength of three shot-peened aluminum alloys Al 7075-T651, Al 2024-T351 and Al 2014-T6 and a titanium alloy Ti-6Al-4V was measured to determine the differences in shot peening quality from three vendors that were given the same shot peening parameters. Shot peening produces surface roughness, a cold-worked layer and, most importantly, a residual stress layer that resists the propagation of fatigue cracks. Significant vendor-to-vendor differences in fatigue properties were found, with Vendor 1 giving the greatest fatigue lifetimes.

Subject Categories:

  • Metallurgy and Metallography
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE