ENVIRONMENTAL CRACKING - DOES IT AFFECT YOU?

This paper discusses the nature of stress-corrosion cracking (SCC) and corrosion fatigue cracking (CFC) of materials, and various ways of dealing with them. SCC and CFC, two of the most important forms of environmental cracking, are within the scope of American Society for Testing Materials (ASTM) Subcommittee G01.06 on Stress-Corrosion Cracking and Corrosion Fatigue. SCC is a phenomenon in which time-dependent cracking occurs in a metal product, when certain metallurgical, mechanical, and environmental conditions exist simultaneously; it has a static driving force. CFC is a related process, but with a cyclic driving force. In addition, all pure metals and alloys are liable to CFC. Both SCC and CFC have subcritical crack growth, during which cracks grow from existing flaws or initiation sites, and increase to a size at which catastrophic fracture occurs. For both SCC and CFC, the paper discusses testing techniques in relation to the general state of the art, ASTM Standards, and the interpretation of test results. It also considers how far they can be avoided, whether they can be controlled, and whether predictions can be made of the service life before failure occurs.

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  • Corporate Authors:

    American Society for Testing and Materials

    100 Barr Harbor Drive, P.O. Box C700
    West Conshohocken, PA  United States  19428-2957
  • Authors:
    • SPROWLS, D O
  • Publication Date: 1996-4

Language

  • English

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00726592
  • Record Type: Publication
  • Source Agency: Transport Research Laboratory
  • Files: ITRD
  • Created Date: Oct 28 1996 12:00AM