Accession Number:

ADA110427

Title:

Review of Corrosion Fatigue.

Descriptive Note:

Phase rept.,

Corporate Author:

NAVAL AIR DEVELOPMENT CENTER WARMINSTER PA AIRCRAFT AND CREW SYSTEMS TECHNOLOGY DIRECTORATE

Personal Author(s):

Report Date:

1981-11-16

Pagination or Media Count:

43.0

Abstract:

The work on corrosion fatigue by a number of investigators is reviewed, and the current understanding of this phenomenon is discussed. Corrosion fatigue behavior can be grouped into three types, and it is affected by numerous variables - environmental, mechanical, and metallurgical. There are several models for corrosion fatigue crack growth, which incorporate the fatigue crack growth in an inert reference environment, the sustained load crack growth, and the loading variables. The proposed mechanisms for corrosion fatigue phenomenon are pitting, metal dissolution, protective film rupture, surface energy reduction, and hydrogen embrittlement. Hydrogen embrittlement is regarded as the most influential mechanism.

Subject Categories:

  • Properties of Metals and Alloys
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE