Stress corrosion cracking and passive film-induced tensile stress in alpha-Ti

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J Mater Sci Technol ›› 2001, Vol. 17 ›› Issue (04): 413-416.

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Stress corrosion cracking and passive film-induced tensile stress in alpha-Ti

Hong LU, Kewei GAO, Hui LIU, Lijie QIAO, Wuyang CHU

Dept. of Materials Physics, University of Science and Technology Beijing, Beijing 100083, China

Received:2000-04-10 Revised:2000-04-26 Online:2001-07-28 Published:2009-10-10
Contact: Wuyang CHU

Abstract

Abstract: alpha -Ti foil with a protective layer formed on one side was deflected during corrosion in a methanol solution containing 0.6 mol/L KCl and then a tensile stress was generated at or near the metal passive film interface. The in situ TEM observation showed that corrosion process could facilitate dislocation emission and motion. Adding 10% H2O into the methanol solution decreased the passive film-induced stress from 320 MPa to zero, and the susceptibility to SCC measured in slow strain rate tests decreased correspondingly from 98% to zero.

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Hong LU, Kewei GAO, Hui LIU, Lijie QIAO, Wuyang CHU. Stress corrosion cracking and passive film-induced tensile stress in alpha-Ti[J]. J Mater Sci Technol, 2001, 17(04): 413-416.

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Stress corrosion cracking and passive film-induced tensile stress in alpha-Ti

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