1993 Volume 11 Issue 1 Pages 43-49
This paper summarized metallurgical and mechanical properties of stainless steel SUS316L joints brazed with two types of newly deve10ped palladium-nickel based filler metals, 40Pd-5ONi-10Co, 30Pd -50Ni-10Cu-10Co, commercial palladium containing filler metal, 33Pd-64Ag-3Mn(BPd-10), and nickle-based filler metal, Ni-Co-Cr-Mo-Fe-B.
The main results obtained were as follows:
(1) The maximum joint strengths at room temperature were the joints brazed with the palladium-nickel based filler metal 40Pd-5ONi-10Co and 30Pd-5ONi-10Cu-10Co, then the mean values were 516 MPa.
(2) The 30Pd-5ONi-10Cu-10Co filler metal showed the highest joint strength at 873 K or below, and the 33Pd-64Ag-3Mn filler metal showed the highest joint strength at 1073 K.
(3) Joints brazed with 40Pd-5ONi-10Co and 30Pd-5ONi-10Cu-10Co have superlor creep rupture resistance at 673 K and 873 K, and the brazed joints with Ni-Co-Cr-Mo-Fe-B offered longer rupture time at 1073 K than those with palladium-nickel base filler matals.
(4) The 30Pd-50Ni-10Cu-10Co filler metal is the best filler metal for heat-resisting brazing.
