Home HOME Kovove Materialy-Metallic Materials 2013 Metallic Materials Vol. 51 (2013), no. 2, pp.129-133

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Metallic Materials Vol. 51 (2013), no. 2, pp.129-133

Title: Microstructure characteristics near the interface of vacuum brazing of Al/Cr18-Ni8 stainless steel
Author: LI YAJIANG, WANG JUAN, WU NA
Abstract: The microstructure characteristics of vacuum brazing interface of Al/Cr18-Ni8 stainless steel was researched by means of SEM micro-hardness test and X-ray diffraction (XRD). The test results indicated that the adhesion brazing interface was excellent, and there was no porosity or micro-crack near the interface. The microstructure of the Al/18-8 brazing joint was mainly composed of equiaxial crystal and column crystal. The fracture morphology of the brazing joint mainly consists of coarse and gray fiber-shape fracture, and the fracture was mainly the mixed fracture of the toughness and cleavage. The brazing interface consists of δ(Al, Fe, Si) phase and α-Al (Si) solid solution, without obvious brittleness phase of the high hardness.
Keywords: vacuum brazing, interface, microstructure, fracture X-ray diffraction
Published online: 20-Sep-2017
Year: 2013, Volume: 51, Issue: 2 Page From: 129, Page To: 133
doi:10.4149/km_2013_2_129
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