Accession Number:

ADA003740

Title:

Aspects of Stress Corrosion

Descriptive Note:

Final rept.

Corporate Author:

STANFORD UNIV CA DEPT OF MATERIALS SCIENCE AND ENGINEERING

Personal Author(s):

Report Date:

1974-11-01

Pagination or Media Count:

10.0

Abstract:

The objective of this research was to develop a new approach to stress corrosion and the attendant cracking that accompanies it. The rate of formation of a surface notch in a single crystal material has been theoretically evaluated using first order perturbation theory and shown to depend upon the eighth power of the macroscopic stress for both surface diffusion, volume diffusion and dissolution mechanisms. An experimental study of S.C.C. of austenitic stainless steels in hot halide environments has revealed the presence of martensite on the fracture surfaces whereas it does not form in the bulk at that temperature. This suggests that martensite assists in the kinetics of crack propagation in these environments. The change of work function of copper single crystals by both elastic and plastic compressive strain has been determined. The plastic strain effect is not consistent with theory.

Subject Categories:

  • Properties of Metals and Alloys

Distribution Statement:

APPROVED FOR PUBLIC RELEASE