Effect of Temperature on Metallurgical Reactions and Microstructure Evolution of 316L/BNi-2 Brazed Joints

Ma, Han-Yang; Duan, Peng-yang; Liao, P.H.; Zhou, Guo‐Yan; Tu, Shan‐Tung

doi:10.1007/s11665-021-06296-w

Cited by 5 publications

(1 citation statement)

References 35 publications

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“…Stainless steel joints can be widely found in core panels, heat exchangers, and metal supports which are more and more used in buildings, automobile exhaust systems, and fuel cells [ 9 , 10 , 11 , 12 ]. Compared to other joining methods, brazing is a joining method in which the base materials and the brazing filler (below the melting point of the base materials) are heated to the melting temperature of the brazing filler together, and then the liquid brazing filler is used to fill the brazing seam to join the base materials, so it has less impact on the properties of the base material and is very suitable for the joining of compact structures [ 13 , 14 , 15 ]. The brazing of stainless steel has been extensively studied.…”

Section: Introductionmentioning

confidence: 99%

Interfacial Microstructure and Mechanical Properties of 1Cr18Ni9Ti/1Cr21Ni5Ti Stainless Steel Joints Brazed with Mn-Based Brazing Filler

Chen

Chen²,

Yang³

et al. 2022

Materials

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The problem of stainless steel brazing is still the focus of scientific research. In this work, the Mn-based brazing filler was used to braze 1Cr18Ni9Ti and 1Cr21Ni5Ti stainless steel. The typical microstructure of the 1Cr18Ni9Ti/1Cr21Ni5Ti joint was analyzed in detail, and the interface structure of the joint was determined to be 1Cr18Ni9Ti/Mn(s, s)/1Cr21Ni5Ti. The brazing temperature and holding time were shown to have a great influence on the microstructure of the brazed joint. The tensile strength of brazed joints first increased and then decreased with the rising of the brazing temperature and the holding time. The maximum tensile strength was 566 MPa when the joints were brazed at 1125 °C for 15 min. The diffusion of Mn and Cr was an important factor affecting the quality of the joints. The diffusion distances of Mn and Cr at different brazing temperatures and holding times were measured, and the diffusion activation energy and diffusion coefficient were achieved by the Arrhenius equation.

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