Dissimilar Infrared Brazing of CoCrFe(Mn)Ni Equiatomic High Entropy Alloys and 316 Stainless Steel

Crystals

Shyi-Kaan Wu¹  Chieh Lin¹  Ren-Kae Shiue¹  Yu-Sy Lin² 

[1] Department of Materials Science and Engineering, National Taiwan University, Taipei 106, Taiwan;Department of Mechanical Engineering, National Taiwan University, Taipei 106, Taiwan;

关键词: high entropy alloys;    dissimilar infrared brazing;    microstructure;    shear tests;   

DOI  :  10.3390/cryst9100518

来源: DOAJ

【 摘 要 】

Dissimilar infrared brazing of CoCrFeMnNi/CoCrFeNi equiatomic high entropy alloys and 316 stainless steel using MBF601 and BNi-2 foils was evaluated. The wetting angles of the two fillers at 50 °C above their liquidus temperatures on the three substrates were below 40 degrees. The CoCrFeMnNi/316 SS joint had the highest shear strength of 361 MPa with BNi-2 filler brazing at 1020 °C for 180 s, and fractured at the CrB compound in the joint. The CoCrFeMnNi/MBF601/316 SS joint contained a CoCrFeMnNi-based matrix, phosphides and B-containing compounds. The CoCrFeNi/316 SS joint had the highest shear strength of 374 MPa when brazed with BNi-2 filler at 1020 °C for 600 s, and fractured at the CrB in the joint. The CoCrFeNi/MBF601/316 SS joint consisted of a (Fe,Ni)-rich matrix, phosphides and B/Cr/Fe/P compounds, and the highest shear strength of 324 MPa was achieved when it was brazed at 1080 °C for 600 s.

【 授权许可】

Unknown