Shielding gas brazing of martensitic stainless steel with copper free silver based filler metals
Source abstract
Abstract
In the present work, the applicability of the copper free silver based alloys Ag–15Mn and Ag–5Pd as filler metals for shielding gas brazing of the martensitic stainless steel X3CrNiMo13-4 was investigated. The joints were examined with respect to their microstructure, their corrosion behaviour in aequous NaCl solution as well as – in the case of the specimens brazed with AgPd5 – their mechanical performance under tensile and torsion loading. Specimens brazed with Ag– 15Mn showed pronounced oxidation in the Ar/H2 shielding gas atmosphere as well as a low corrosion resistance in 0 ? 5M NaCl solution. The filler metal Ag–5Pd showed very good brazing results. With this filler metal, defect free and corrosion resistant joints with an ultimate tensile strength of 800 MPa and a low cycle fatigue strength of 490 MPa could be produced.
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Research context
OpenAlex topics: Advanced Welding Techniques Analysis · Electronic Packaging and Soldering Technologies · Aluminum Alloy Microstructure Properties
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