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자료유형
학술저널
저자정보
저널정보
대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.21 No.2
발행연도
2015.1
수록면
276 - 285 (10page)

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The grain-structure evolution of three-layered A4343(clad)/A3003(core)/A4343(clad) aluminum brazing sheetswas studied by means of electron backscatter diffraction. Three different samples were prepared by cold rollingwith 17%, 22%, and 44% reduction, and the brazing treatment was carried out in form of differential scanningcalorimetry. Orientation maps of the clad and the core suggested that the grains in the melted and re-solidifiedclad did not grow epitaxially from the core in case of the 17% and 22% cold-rolled samples. In contrast,the grains in the 44% cold-rolled sample seemed to have been formed by epitaxial growth from the core. Kernel average misorientation (KAM) analysis revealed that the samples cold rolled with 17% and 22%reduction retained a deformed microstructure in the core even after the brazing treatment, but the core ofthe 44% cold-rolled sample was composed of coarse elongated grains, free from any substructure. The dissolutiondepth corresponding to the thickness of the core affected by the brazing treatment was proportional tothe average KAM of the core.

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