Electrochemical Study of Diffusion Bonded Joints between Micro-duplex Stainless Steel and Ti6A14V Alloy
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2014年第2期
论文作者：Shaily M.Bhola Sukumar Kundu Rahul Bhola Brajendra Mishra Subrata Chatterjee
文章页码：163 - 171
摘 要：In the present study,corrosion behavior of diffusion bonded joints formed between micro-duplex stainless steel（MDSS） and Ti6AI4V alloy（TiA）（at 900 ℃ for 60 min under 4 MPa uniaxial pressure in vacuum） was investigated in 1 mol/L HCI and 1 mol/L NaOH solutions using various electrochemical measurements such as open circuit potential（OCP）,electrochemical impedance spectroscopy（EIS） and potentiodynamic polarization（PD）.For comparison,corrosion behavior of base metals（MDSS and TiA） was also evaluated.Bonded joint was characterized by light optical microscopy and scanning electron microscopy using backscattered electron mode.The layer wise σ phase and λ + FeTi phase mixture has been observed at the bond interface and the bond tensile strength and shear strength were 556.4 MPa and 420.2 MPa,respectively.
Shaily M.Bhola1，Sukumar Kundu1,2，Rahul Bhola1，Brajendra Mishra1，Subrata Chatterjee2
1. Department of Metallurgical and Materials Engineering,Colorado School of Mines2. Department of Metallurgy and Materials Engineering,Bengal Engineering and Science University
摘 要：In the present study,corrosion behavior of diffusion bonded joints formed between micro-duplex stainless steel（MDSS） and Ti6AI4V alloy（TiA）（at 900 ℃ for 60 min under 4 MPa uniaxial pressure in vacuum） was investigated in 1 mol/L HCI and 1 mol/L NaOH solutions using various electrochemical measurements such as open circuit potential（OCP）,electrochemical impedance spectroscopy（EIS） and potentiodynamic polarization（PD）.For comparison,corrosion behavior of base metals（MDSS and TiA） was also evaluated.Bonded joint was characterized by light optical microscopy and scanning electron microscopy using backscattered electron mode.The layer wise σ phase and λ + FeTi phase mixture has been observed at the bond interface and the bond tensile strength and shear strength were 556.4 MPa and 420.2 MPa,respectively.
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