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Effect of Heat Treatment Process on Corrosion Resistance of Ti6321 Alloy |
ZHANG Jiahuan1,2, CUI Zhongyu1(), FAN Lin2, SUN Mingxian2 |
1.School of Materials Science and Engineering, Ocean University of China, Qingdao 266100, China 2.State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao 266237, China |
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Abstract The effect of heat treatments on the microstructure and corrosion behavior of Ti6321 Ti-alloy in artificial seawater and 5 mol/L hydrochloric acid solution was investigated by means of XRD, electrochemical tests, SEM and confocal laser scanning microscope. Results show that the three groups of Ti6321 Ti-alloy, which has been subjected to three different heat treatments, exhibit excellent passivation ability in artificial seawater with more or less the same level of corrosion resistance. In 5 mol/L HCl solution, the corrosion resistance of the Ti6321 Ti-alloy with widmanstatten structure is the worst, followed by equiaxed ones, while the alloy with double structure presents the best corrosion resistance.
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Received: 19 January 2022
32134.14.1005.4537.2022.023
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Fund: National Natural Science Foundation of China(51931008) |
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