Accession Number:

ADA224931

Title:

The Effect of Manganese Phosphate Coatings on Fatigue Crack Initiation

Descriptive Note:

Final technical rept.

Corporate Author:

ARMY ARMAMENT RESEARCH DEVELOPMENT AND ENGINEERING CENTER WATERVLIET NY BENET LABS

Personal Author(s):

Report Date:

1990-06-01

Pagination or Media Count:

28.0

Abstract:

The effect of a manganese phosphate coating on the fatigue crack initiation life of ASTM A723 high strength steel was determined. The phosphate coating process creates pitting stress concentrators on the surface that cause a dramatic reduction in crack initiation life. This deleterious effect on fatigue life increases as the applied stress level decreases. Keywords Crack Initiation, Fatigue, High strength steel, Manganese phosphate, Shot peening.

Subject Categories:

  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE