High Temperature Brazing for Stainless Steel SUS316L with Pd-Cu Brazing Filler Metals

概要

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Newly developed palladium-containing brazing filler metals, 30 Pd-60 Cu-10 Co, 30 Pd-60 Cu-10 Ni, and 30 Pd-50 Cu-10 Ni-10 Co (all in wt-%), were studied for use in brazing stainless steel SUS 316 L at high temperatures. Palladium-containing filler metals were selected because of their ductility, oxidation resistance, relatively high melting points, and lower cost than gold-based brazing filler metals. Wettability, microstructures and reactions were studied with experimental brazed joints between base and filler metal. Joint strengths, tensile strengths at room and elevated temperatures of 473K to 1073K and creep rupture strengths at 673K to 1073K, were investigated. The joints brazed with the 30 Pd-50 Cu-10 Ni-10 Co filler metal had superior tensile strengths at elevated temperature and creep rupture strengths. The joints with this filler metal had tensile strengths of 327 MPa to 429 MPa at temperatures of 293K to 873K.
社団法人溶接学会の論文
1993-10-01