Mechanism of Stress Corrosion Cracking.
Abstract
The susceptibility of any metal-environment system to stress corrosion cracking (s.c.c.) is sensitive to (1) metallurgical factors, e.g. purity, alloying components, heat treatment, cold work, grain size, stress (2) environmental factors, e.g. prevailing electrochemical potential, extraneous ions, temperature, pH. The mechanism of s.c.c. in general, based on presently available facts, is best described in terms of metal-bond disruption by specifically damaging ions adsorbed on appropriate defect sites of a yielding metal surface (stress-sorption cracking). The mechanism is related to that accounting for liquid metal embrittlement and stress cracking of plastics. The use of measured critical potentials below which s.c.c. does not occur provides a promising approach to the practical problem of avoiding environmental failures of stressed metals. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 20, 1973
- Accession Number
- AD0762541
Entities
People
- H. H. Uhlig
Organizations
- Massachusetts Institute of Technology