Analysis of stress corrosion behaviour of TC4 titanium alloy in simulated seawater environment
by Zipan Chen; Beibei Guo; Huixian Zhang
International Journal of Microstructure and Materials Properties (IJMMP), Vol. 17, No. 2/3, 2024

Abstract: Seawater has a certain degree of corrosiveness to metal materials. In order to understand the stress corrosion behaviour of TC4 titanium alloy in marine environment, the stress corrosion performance of TC4 titanium alloy in simulated seawater environment was studied. The stress corrosion performance of TC4 titanium alloy specimens under different strain rates is tested, and the stress corrosion performance of TC4 titanium alloy specimens under dual state and Weinstein structures are analysed. Test results show that the stress corrosion sensitivity index is the highest at a strain rate of 5.510^-6/s, indicating that the stress corrosion of TC4 titanium alloy in simulated seawater environment is more severe than that of TC4 titanium alloy in ordinary air. The stress corrosion threshold values of the bimodal structure and the Weinstein structure of the TC4 titanium alloy specimen are 57.12 MPa * m^1/2 and 68.59 MPa * m^1/2, respectively, indicating that the Weinstein structure has a higher stress corrosion strength.

Online publication date: Mon, 15-Apr-2024

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