The environment assisted cracking of Fe-32Mn-9Al alloys
- National Tsing Hua Univ., Hsinchu (Taiwan, Province of China). Dept. of Materials Science and Engineering
- Chung Shan Inst. of Science and Technology, Taoyuan (Taiwan, Province of China). Materials Research and Development Center
Stress corrosion cracking (SCC) behaviors of four austenitic Fe-32Mn-9Al containing approximately 1 wt% carbon alloys were studied in this work. All of the four alloys are susceptible to stress corrosion cracking in room temperature and 160C NaCl solution. The SCC can be enhanced by applying anodic potential. The mechanism of SCC is mainly active path corrosion. The crack path is transgranular. The addition of 1.23% Mo or 1.27% Si to the austenitic Fe-32Mn-V/ 9Al alloy does not change the SCC mechanism and crack path. The addition of 1.27% Si makes the alloy more susceptible to SCC but no such effect was observed with 1.23% Mo. All four alloys studied are susceptible to hydrogen embrittlement in 3.5% NaCl solution at negative enough cathodic applied potential. The addition of Mo, Cr or Si in the alloy displaces the embrittlement potential to a more cathodic range.
- OSTI ID:
- 70148
- Report Number(s):
- CONF-940222-; TRN: IM9529%%487
- Resource Relation:
- Conference: Corrosion 94: National Association of Corrosion Engineers (NACE) international annual conference, Baltimore, MD (United States), 28 Feb - 4 Mar 1994; Other Information: PBD: 1994; Related Information: Is Part Of Corrosion/94 conference papers; PB: 5005 p.
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
IRON BASE ALLOYS
STRESS CORROSION
CRACK PROPAGATION
HYDROGEN EMBRITTLEMENT
MANGANESE ALLOYS
ALUMINIUM ALLOYS
MOLYBDENUM
METALLURGICAL EFFECTS
SILICON
CHROMIUM
CARBON ADDITIONS
SODIUM CHLORIDES
CORROSIVE EFFECTS
ELECTROCHEMICAL CORROSION
FRACTURE MECHANICS
MOLYBDENUM ALLOYS
SILICON ALLOYS
CHEMICAL COMPOSITION
MECHANICAL PROPERTIES
EXPERIMENTAL DATA