تاثیر زمان اتصال بر ریزساختار و خواص مکانیکی در طی اتصال فاز مایع گذرا سوپر آلیاژ پایه نیکل ۲۷۶Hastelloy C به فولاد زنگ نزن ۳۱۶AISI

Joining of Hastelloy C۲۷۶ nickel-base superalloy to AISI۳۱۶ Stainless Steel using BNi-۲ interlayer performed by transient liquid phase process (TLP) at ۱۱۵۰°C for ۵ and ۳۰ 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 ۵ and ۳۰ 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 C۲۷۶ nickel-base superalloy contains rich borides of Ni, Cr, Mo, and W, and the DAZ of ۳۱۶ austenitic stainless steel contains borides rich in Fe, Cr, and Ni.

Keywords:

Transient Liquid Phase , Hastelloy C۲۷۶ , AISI۳۱۶ , Microstructure , Isothermal solidification , اتصال فاز مایع گذرا , سوپر آلیاژ Hastelloy C۲۷۶ , فولاد زنگ نزن AISI۳۱۶ , ریزساختار , انجماد همدما