Volume 8, Issue 2 (Journal OF Welding Science and Technology 2023)                   JWSTI 2023, 8(2): 1-12 | Back to browse issues page

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Effect of bonding time on microstructure and mechanical properties during TLP bonding of nickel-base superalloys Hastelloy C276 to AISI316 Stainless Steel
M. M. Taghvaei * 1, M. Shamanian2 , Behzad Niroumand2 , H. Mostaan3
1- Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran , mahditaqvaei@ma.iut.ac.ir
2- Department of Materials Engineering, Isfahan University of Technology, Isfahan, Iran
3- Department of Materials Science & Engineering, Arak University, Arak, Iran.
Abstract:   (994 Views)

Joining of Hastelloy C276 nickel-base superalloy to AISI316 Stainless Steel using BNi-2 interlayer performed by transient liquid phase process (TLP) at 1150°C for 5 and 30 minutes. Bonding microstructure was studied using an Optical microscope and a scanning electron microscope (SEM). Vickers hardness test and shear strength test have been used to evaluate the mechanical properties. Microstructural studies showed that at 5 and 30 minutes of bonding time, isothermal solidification is completely formed, and the Center of the joint is free of any eutectic intermetallic compounds. Also, Findings showed that the DAZ of Hastelloy C276 nickel-base superalloy contains rich borides of Ni, Cr, Mo, and W, and the DAZ of 316 austenitic stainless steel contains borides rich in Fe, Cr, and Ni.

Keywords: Transient Liquid Phase, Hastelloy C276, AISI316, Microstructure, Isothermal solidification
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Type of Study: Research | Subject: Special
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