Laser brazing of a nickel-based superalloy using a Ni-Mn-Fe-Co-Cu high entropy alloy filler metal
Laser brazing of a nickel-based superalloy using a Ni-Mn-Fe-Co-Cu high entropy alloy filler metal
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DOI：
10.1016/j.matlet.2017.12.003
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发表时间：
2018-03-15
影响因子：
3
通讯作者：
Hu, Anming
中科院分区：
文献类型：
--
作者：
Bridges, Denzel;Zhang, Suhong;Hu, Anming
在本研究中，我们证明了使用Ni:Cu:Co:Fe:Mn摩尔比为1:1:1:0.25:1.75的Ni-Mn-Fe-Co-Cu高熵合金填充金属成功钎焊了激光钎焊Inconel (R) 718，并获得了优异的机械性能。最大抗剪强度达到220 MPa。高熵合金钎焊后硬度提高3-4倍。如果钎焊温度高于1200摄氏度，则由于母材和填充金属之间的过度扩散，结合强度会受到影响。其硬度行为是由鸡尾酒效应和钎焊引起的晶格畸变共同作用的结果。(C) 2017 Elsevier B.V.版权所有
In this study, we demonstrate the successful brazing and superior mechanical performance of laser brazed Inconel (R) 718 using a Ni-Mn-Fe-Co-Cu high entropy alloy filler metal with a nominal Ni:Cu:Co:Fe:Mn molar ratio of 1:1:1:0.25:1.75. A maximum 220 MPa shear strength is achieved. The high entropy alloy experiences the hardness increases 3-4 times after brazing. If the brazing temperature is higher than 1200 degrees C, the bonding strength suffers due to excessivediffusion between the base metal and the filler metal. The hardness behavior is attributed to a combination of the cocktail effect and lattice distortion induced by brazing. (C) 2017 Elsevier B.V. All rights reserved.