Aging effects of dodecagonal quasicrystal formed in Mn-Cr-Ni-Si alloys

13th International Conference on Quasicrystals

Toyonaga, Kotoba^1 ; Ishimasa, Tsutomu^1

Graduate School of Engineering, Hokkaido University, Kita-ku, Sapporo

060-8628, Japan^1

关键词: Aging effects;    As-cast;    Growth process;    Johnson Mehl Avrami equation;    Ni-Si alloy;    Structural qualities;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/809/1/012015/pdf
DOI  :  10.1088/1742-6596/809/1/012015

来源: IOP

【 摘 要 】

The formation of Mn-Cr-Ni-Si dodecagonal quasicrystal has been studied at 600 and 700 °C. The growth process of the quasicrystal from as-cast β-Mn phase was explained by Johnson-Mehl-Avrami equation. In order to evaluate structural quality of the quasicrystal, distortion in the diffraction pattern observed along the 12-fold axis was analyzed. This analysis indicated that the aging at 600 °C for 100 h is the best condition to synthesize the quasicrystal.