首页|Microstructural evolution and sagging behavior of cold-rolled Al-1.3Mn-1.5Zn-xZr core sheet for brazing
Microstructural evolution and sagging behavior of cold-rolled Al-1.3Mn-1.5Zn-xZr core sheet for brazing
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NSTL
Elsevier
Microstructural evolution and sagging behavior of Al-1.3Mn-1.5Zn-xZr (x = 0.03, 0.09 and 0.13) layer core sheets for brazing were systematically investigated. It was found that the 0.03 wt% zirconium addition could slightly improve the sagging resistance of the Al-1.3Mn-1.5Zn sheet. When the zirconium addition was increased to 0.09 wt%, the sagging resistance was significantly improved, which was mainly attributed to the coarse equiaxed grains with a homogeneous distribution during the sagging test. However, the 0.13 wt% zirconium addition damaged the sagging resistance of the Al-1.3Mn-1.5Zn sheet, caused by the many finer grains, despite the formation of more nano-sized α-Al(MnFeSi) phases and fewer nano-sized Al3Zr precipitates. Furthermore, the lognormal correlation between the sagging distances of the experimental sheets and their reserved tensile properties after air-cooling at the different sagging time was also explored in this study.
NSTL
Elsevier
