Co-based Powder Brazing Material Prepared by Melting Gas Atomization in GH4169 Alloy Brazing Application

WANG Xiaoyu; WANG Yi; CAO Qigao; MENG Hanqi; ZHENG Jing; SU Jin; HU Jianhua; ZHANG Zhixiao

doi:10.7512/j.issn.1001-2303.2024.05.06

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Co-based Powder Brazing Material Prepared by Melting Gas Atomization in GH4169 Alloy Brazing Application
Vol. 54, Issue 5, Pages: 46-51(2024)
Published： 25 May 2024 ，
DOI： 10.7512/j.issn.1001-2303.2024.05.06

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汪小钰，王轶，操齐高，等.熔炼气雾化制备钴基粉末钎料在GH4169合金钎焊中应用［J］.电焊机，2024，54（5）：46-51.

WANG Xiaoyu, WANG Yi, CAO Qigao, et al.Co-based Powder Brazing Material Prepared by Melting Gas Atomization in GH4169 Alloy Brazing Application[J].Electric Welding Machine, 2024, 54(5): 46-51.
汪小钰，王轶，操齐高，等.熔炼气雾化制备钴基粉末钎料在GH4169合金钎焊中应用［J］.电焊机，2024，54（5）：46-51. DOI： 10.7512/j.issn.1001-2303.2024.05.06.

WANG Xiaoyu, WANG Yi, CAO Qigao, et al.Co-based Powder Brazing Material Prepared by Melting Gas Atomization in GH4169 Alloy Brazing Application[J].Electric Welding Machine, 2024, 54(5): 46-51. DOI： 10.7512/j.issn.1001-2303.2024.05.06.

摘要

采用真空感应熔炼结合气雾化的方法制备了钴基Co-Cr-Ni-Si-W合金粉末，该合金粉末球具有高形度高和良好的分散性，杂质元素含量低、熔化温度范围为1 073 ℃~1 113 ℃。将合金粉末与粘结剂混合制成CoCrNiSiW膏状钎料，并在GH4169高温合金上进行钎焊试验，研究了钎料在母材上的润湿性能，对比了不同粒度合金粉末的钎焊性能。结果表明，在钎焊温度1180 ℃、保温时间10 min条件下，CoCrNiSiW合金钎料可以在GH4169合金母材表面表现出良好的润温性。使用小于325目粉末钎焊的合金接头组织更均匀、气孔缺陷相对较少，因此接头强度更高，接头的抗剪强度为127 MPa，抗拉强度为369 MPa。

Abstract

Cobalt-based Co-Cr-Ni-Si-W alloy powder was prepared by vacuum induction melting combined with gas atomization

with high sphericity

good dispersion

low content of impurity elements

and a melting point of about 1073.39℃~1112.58℃. The alloy powder was mixed with binder to make CoCrNiSiW paste brazing filler metal

and GH4169 high-temperature alloy was used as the brazing base material

to study the CoCrNiSiW brazing filler metal wettability on the base material

and to compare the brazing performance of different specifications of alloy powder. The results show that brazing temperature 1180 ℃

holding time 10min

CoCrNiSiW alloy brazing material can be spread on the surface of the GH4169 alloy base material

has a better wetting ability

and the use of -325 mesh specifications of the joints after the brazing of the powder organization is uniform

less porosity defects

so that the joints of the weld strength is higher

the joints of the shear strength is 127 MPa，the tensile strength is 369 MPa.

关键词

熔炼气雾化钴基钎料粉钎焊润湿性力学性能

Keywords

Melting gas atomizationCobalt-based brazing powdersBrazingJoint properties

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