Brazing of CoCrFeNi and CoCrFeMnNi equiatomic alloys using 70Au-8Pd-22Ni (AuPdNi) filler foil by infrared and traditional furnaces was investigated. The wettability of AuPdNi filler on both CoCrFeNi and CoCrFeMnNi substrates is excellent at 1050 °C. CoCrFeNi/AuPdNi/CoCrFeNi joints brazed using infrared and traditional furnaces are composed of Au/Ni-rich solid solutions of different sizes. CoCrFeMnNi/AuPdNi/CoCrFeMnNi joints brazed with an infrared furnace are composed of large globular CoCrFeNi/Ni-rich particles in AuMn intermetallic matrix. In traditional furnace brazed CoCrFeMnNi/AuPdNi/CoCrFeMnNi joints, the AuMn intermetallic compound is uniformly distributed in CoCrFeNi-based and Ni-rich phases. The average shear strengths of both infrared and traditional furnace brazed CoCrFeNi/AuPdNi/CoCrFeNi joints exceed 300 MPa, and all joints fractured at the brazed zone present dimple dominated fracture. In contrast, the traditional furnace brazed CoCrFeMnNi/AuPdNi/CoCrFeMnNi joint has a much lower average shear strength of 173 MPa because of the existence of many solidification shrinkage voids in the brazed zone.

中文翻译：

---

使用 70Au-8Pd-22Ni 填料箔钎焊 CoCrFeNi 和 CoCrFeMnNi 等原子合金

研究了使用 70Au-8Pd-22Ni (AuPdNi) 填料箔通过红外线和传统炉钎焊 CoCrFeNi 和 CoCrFeMnNi 等原子合金。AuPdNi 填料在 CoCrFeNi 和 CoCrFeMnNi 基材上的润湿性在 1050 °C 时都非常出色。使用红外和传统炉钎焊的 CoCrFeNi/AuPdNi/CoCrFeNi 接头由不同尺寸的富 Au/Ni 固溶体组成。用红外炉钎焊的 CoCrFeMnNi/AuPdNi/CoCrFeMnNi 接头由 AuMn 金属间化合物基体中的大球状 CoCrFeNi/Ni 富集颗粒组成。在传统的炉焊 CoCrFeMnNi/AuPdNi/CoCrFeMnNi 接头中，AuMn 金属间化合物均匀分布在 CoCrFeNi 基和富 Ni 相中。红外和传统炉钎焊 CoCrFeNi/AuPdNi/CoCrFeNi 接头的平均剪切强度均超过 300 MPa，并且所有在钎焊区断裂的接头都存在以凹坑为主的断裂。相比之下，传统炉焊 CoCrFeMnNi/AuPdNi/CoCrFeMnNi 接头的平均剪切强度低得多，为 173 MPa，因为钎焊区存在许多凝固收缩空隙。