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.
Descriptors:
Subject Categories:
- Metallurgy and Metallography
- Mechanics