Accession Number:

ADA001096

Title:

Microstructural Effects in the Fatigue Behavior of Metals and Alloys,

Descriptive Note:

Corporate Author:

RENSSELAER POLYTECHNIC INST TROY N Y MATERIALS DIV

Personal Author(s):

Report Date:

1974-08-30

Pagination or Media Count:

202.0

Abstract:

This review examines the various stages of fatigue damage on the basis of changes in slip character and dislocation sub-structures resulting from solid solution alloying, thermomechanical treatments or precipitation hardening. Cyclic hardening and softening are related to fatigue life of a wide variety of alloy systems, including pure metals, commercial alloys, intermetallic compounds and directionally solidified eutectics. The influence on fatigue behavior of variations in structure produced by processing e.g., casting defects, inclusions, surface notches also are considered. Finally, the effects of temperature and aggressive environments on crack nucleation and propagation are related to metallurgical structure.

Subject Categories:

  • Laminates and Composite Materials
  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE