Stress corrosion cracking of Fe-Co-B-Si metallic glasses in HCl solutions
- KISR, Safat (Kuwait). Materials Application Dept.
A study on the susceptibility of various iron-cobalt-boron-silicon metallic glasses to stress-corrosion cracking has been conducted. Testing was carried out on thin metallic ribbons of Fe{sub 78}B{sub 13}Si{sub 9}, Fe{sub 66}Co{sub 18}B{sub 15}Si{sub 1}, Co{sub 66}Fe{sub 4}Ni{sub 1}B{sub 14}Si{sub 15}, Co{sub 76}Fe{sub 2}Mn{sub 4}B{sub 12}Si{sub 6}, and Co{sub 69}Fe{sub 4}Ni{sub 1}MO{sub 2}B{sub 12} Si{sub 12} in 0%, 25%, 50%, 75%, and 100% hydrochloric acids solutions at room temperature. The tests were performed under constant-strain conditions in the various solutions until complete separation of the ribbons occurred. Typical fractographic techniques were used for analyzing the failure of the glasses. The results indicated that the susceptibility of the glasses Fe{sub 78}B{sub 13}Si{sub 9}, Fe{sub 66}Co{sub 18}B{sub 15}Si{sub 1}, Co{sub 76}Fe{sub 2}Mn{sub 4}B{sub 12}Si{sub 6} and samples of Co{sub 66}Fe{sub 4} NiB{sub 14}Si{sub 15} glass to stress-corrosion cracking varies only as a function of the amplitude of the strain, Susceptibility is independent of the solution concentration. It is found that the additions of Ni, Mn, Mo and high content of Co into the Fe-Co-B-Si glass enhance the resistance of the alloy against stress-corrosion cracking in HCl solution. On contrary, the results showed that Co{sub 69}Fe{sub 4}Ni{sub 1}Mo{sub 2}B{sub 12}Si{sub 12} glass is not susceptible to stress-corrosion cracking in HCl solutions.
- OSTI ID:
- 70136
- Report Number(s):
- CONF-940222-; TRN: IM9529%%475
- 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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