Brazing of CoCrFeNi and CoCrFeMnNi equiatomic alloys using 70Au-8Pd-22Ni filler foil

IF 2.2 4区 工程技术 Q2 Chemistry Gold Bulletin Pub Date : 2020-05-04 DOI:10.1007/s13404-020-00278-x
Chieh Lin, Ren-Kae Shiue, Shyi-Kaan Wu, Jian-Yuan Huang, Yung-Chien Huang
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引用次数: 4

Abstract

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.

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70Au-8Pd-22Ni填充箔钎焊CoCrFeNi和CoCrFeMnNi等原子合金
研究了70Au-8Pd-22Ni (AuPdNi)填充箔在红外和传统炉上钎焊CoCrFeNi和CoCrFeMnNi等原子合金的性能。在1050°C时,AuPdNi填料在CoCrFeNi和CoCrFeMnNi衬底上的润湿性都很好。采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。采用红外炉钎焊的CoCrFeMnNi/AuPdNi/CoCrFeMnNi接头是由auumn金属间基体中富含CoCrFeNi/ ni的球状大颗粒组成。在传统的炉钎焊CoCrFeMnNi/AuPdNi/CoCrFeMnNi接头中,AuMn金属间化合物均匀分布在cocrfeni基相和富ni相中。红外和传统炉钎焊CoCrFeNi/AuPdNi/CoCrFeNi接头的平均抗剪强度均超过300?在钎焊区断裂的接头均表现为韧窝为主断裂。相比之下,传统的炉钎焊CoCrFeMnNi/AuPdNi/CoCrFeMnNi接头的平均抗剪强度要低得多,为173?由于在钎焊区存在许多凝固收缩空洞。
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来源期刊
Gold Bulletin
Gold Bulletin 工程技术-材料科学:综合
CiteScore
3.30
自引率
4.50%
发文量
0
审稿时长
3 months
期刊介绍: Gold Bulletin is the premier international peer reviewed journal on the latest science, technology and applications of gold. It includes papers on the latest research advances, state-of-the-art reviews, conference reports, book reviews and highlights of patents and scientific literature. Gold Bulletin does not publish manuscripts covering the snthesis of Gold nanoparticles in the presence of plant extracts or other nature-derived extracts. Gold Bulletin has been published over 40 years as a multidisciplinary journal read by chemists, physicists, engineers, metallurgists, materials scientists, biotechnologists, surface scientists, and nanotechnologists amongst others, both within industry and academia. Gold Bulletin is published in Association with the World Gold Council.
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