Application of Electrochemical Noise to Investigate Role of Microstructural Evolution on Inhibiting Stress Corrosion Cracking of Ti?6Al?4V Weldment

Yan Liu; Jicai Feng; Shuping Tan; Yi Cheng; Jin Hu

doi:10.1007/s12540-020-00799-2

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자료유형: 학술저널

저자정보: Yan Liu (Harbin Boiler Company Limited) Jicai Feng (Harbin Institute of Technology) Shuping Tan (Harbin Boiler Company Limited) Yi Cheng (Harbin Boiler Company Limited) Jin Hu (Harbin Institute of Technology)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.12

발행연도: 2021.12

수록면: 5,034 - 5,045 (12page)

DOI: 10.1007/s12540-020-00799-2

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Using the electrochemical noise method, this paper studies the effect of microstructure of weld seam on the stress corrosioncracking behavior of Ti?6Al?4V alloy weldment. Local rapid induction heating can significantly change the microstructure,and the acicular α′ martensite phase in the weld seam is decomposed into lathy α phase and transformed β phase. The higherheat temperature leads to more transformed β phase and less lathy α phase. The mechanical properties and stress corrosioncracking sensitivity during the slow strain rate tensile test are significantly affected by the microstructure of weld seam,which are improved with the decomposition of acicular α′ martensite and decrease of lathy α phase content combined withincrease of transformed β phase content. Compared with the non-treated sample, the induction heating enhances the corrosionresistance of the sample and delays the occurrence time of localized corrosion during the slow strain rate tensile test. Thehigher corrosion resistance and the later occurrence time of localized corrosion are caused by the higher induction heatingtemperature. The microstructural evolution of the weldment significantly inhibits the stress corrosion cracking process.

#Electrochemical noise #Microstructure #Ti?6Al?4V alloy weldment #Stress corrosion cracking

참고문헌 (70)

참고문헌 신청

Tae Kyu Kim / 2007 / Influence of ammonia on the corrosion behavior of Ti-Al-Zr alloy in 360°C water / Metals and Materials International 13(1):47~52

Ju Woong Jang / 2004 / Electrochemical Corrosion Behavior and MG-63 Osteoblast-Like Cell Response of Surface-Treated Titanium / Metals and Materials International 10(5):439~446

H. Puga / 2016 / Effect of Grain and Secondary Phase Morphologies in the Mechanical and Damping Behavior of Al7075 Alloys / Metals and Materials International 22(5):863~871

Jose M. Calderon Moreno / 2014 / Microstructure, Mechanical Properties, and Corrosion Resistance of Ti-20Zr Alloy in Undoped and NaF Doped Artificial Saliva / Metals and Materials International 20(1):177~187

F. Caiazzo / 2013 / J. Manuf. Sci. E Trans. ASME 135:061012~061011

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