Mechanistic differences in transgranular and intergranular cracking of austenitic stainless steels
- Univ. of Central Florida, Orlando, FL (United States). Dept. of Mechanical, Materials and Aerospace Engineering
Many alloys, notably the austenitic stainless steels, exhibit intergranular as well as transgranular stress corrosion cracking (SCC) in Cl{sup {minus}} environments. The mechanism of cracking in both these modes and the conditions under which the transition from trans to intergranular cracking or vice versa occur are topics of much debate and research. Some recent work have suggested that the mechanism of trans and intergranular stress corrosion cracking are identical. In this study, by using the load pulsing technique, it has been determined that the velocity in intergranular SCC is about 2 to 3 times higher than transgranular SCC. Also, by studying the effect of temperature on the crack propagation rate the activation energy in both modes of cracking was found to be similar thereby suggesting that the rate limiting step in both types of cracking may be the same.
- OSTI ID:
- 548578
- Report Number(s):
- CONF-970332-; TRN: 98:000337
- Resource Relation:
- Conference: Corrosion 97. 52. annual corrosion conference of the National Association of Corrosion Engineers: economics and performance - bridging the gap and NACExpo, New Orleans, LA (United States), 9-14 Mar 1997; Other Information: PBD: 1997; Related Information: Is Part Of Corrosion/97 conference papers; PB: [4584] p.
- Country of Publication:
- United States
- Language:
- English
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