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Image Processing-Based Analysis of Temperature Dependent Interlayer in Brazed Fe-Cr-Al Alloy (Fecralloy®) with Ni-Based Filler Metal

1
Department of Thermal Systems, Korea Institute of Machinery and Materials (KIMM), 156 Gajeongbuk-ro, Daejeon 34103, Korea
2
Plant System and Machinery, University of Science and Technology, 217 Gajeong-ro, Daejeon 34113, Korea
*
Author to whom correspondence should be addressed.
Metals 2019, 9(11), 1139; https://doi.org/10.3390/met9111139
Received: 10 September 2019 / Revised: 17 October 2019 / Accepted: 23 October 2019 / Published: 24 October 2019
This paper presents the result of the brazed Iron-chromium-aluminum alloy (Fecralloy) with nickel filler metal (MBF20). The heat plates with the machined 2 mm diameter channels were brazed using 60 μm thick MBF20. In the experiment, the brazing bonding was performed at three different temperatures, and the SEM-EDS images of the cross sections were acquired to analyze. By performing image processing, the change of the filler metal thickness was estimated, and the thickness increased from 53.8 μm, 64.1 μm, and 115.8 μm at 900 °C, 950 °C and 1000 °C, respectively. In addition, the image-processed distributions of CrxBy and NixAly phases with the change of bonding temperatures were quantified. The image processing methods in this work are proposed to be used for quantitative analysis. View Full-Text
Keywords: image processing; brazing bonding; Fe-Cr-Al alloy (Fecralloy); nickel filler; temperature dependence image processing; brazing bonding; Fe-Cr-Al alloy (Fecralloy); nickel filler; temperature dependence
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Shin, J.-H.; Kim, Y.; Choi, H.W.; Choi, J.S.; Yoon, S.H. Image Processing-Based Analysis of Temperature Dependent Interlayer in Brazed Fe-Cr-Al Alloy (Fecralloy®) with Ni-Based Filler Metal. Metals 2019, 9, 1139.

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