Pd-Cu系ろうによるチタン合金Ti-6Al-4Vのろう付継手特性

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The purpose of this study is to develop palladium braze alloys for titanium alloy Ti-6Al-4V with jointing and cost characteristics superior to nickel-based or gold-based filler metals.This paper summarized the metallurgical and mechanical properties of titanium alloy Ti-6Al-4V joints with three types of developed Pd-Cu system braze alloys,30Pd-40Au-30Cu,30Pd-60Cu-10Co,30Pd-60Cu-10Ni,and the commercial nickle-based filler meral Ni-Cr-W-Fe-B-Si.The results obtained were as follows: (1) The intermetallic compounds Ti_2Cu and TiCu were formed at the brazed joints with palladium braze alloys,and the intermetallic compound Ti_2Ni was formed at the brazed joint with Ni-Cr-W-Fe-B-Si.(2) The joints brazed with the 30Pd-60Cu-10Ni filler metal had the highest tensile strength at room temperature at the joint clearance 0.10 mm..(3) The 30Pd-60Cu-10Ni filler metal showed the highest tensile strength at 437K and 673K.(4) The most suitable palladium braze alloy tested for titanium alloy Ti-6Al-4V is the 30Pd-60Cu-10Ni braze alloy.
社団法人日本材料学会の論文
1993-07-15