一変系Al-Fe-Ni共晶合金の一方向凝固組織について
スポンサーリンク
概要
- 論文の詳細を見る
Twenty Al-Fe-Ni alloys were unidirectionally solidified at temperature gradients G=60 to 70°C/cm and solidification rates R=15 to 100μm/s. The coupled growth regions of monovariant Al-T (ternary compound) eutectics were determined. Cellular eutectics are formed in the coupled growth region except at extremely slow rates of solidification. The shape of the eutectics transforms from elongated to square cell in accordance with solidification rates. Excess Ni affects to occurance of constitutional undercooling, because formation of cell structures depends on experimental Ni/Fe and G/R ratios. The X-ray diffraction and EDS analysis show a ternary FeNiAl9 compound as described by Bradley et al., although wide ranges of Fe and Ni contents are permitted. The T-phase is usually rod-like and transforms to ribbon-type at slow solidification rates. The interphase spacing λ changes in accordance with Rλ2=225μm3/s.
- 一般社団法人 軽金属学会の論文
一般社団法人 軽金属学会 | 論文
- Mechanical and wear properties of SiC whisker/ADC12 aluminum alloy composites fabricated by die casting.
- Joining of aluminum and ceramics.
- タイトル無し
- Undercooling and solidification behavior of fluid clumps of second-poured melt of hypereutectic Al-Si alloy in Duplex Casting process.
- Change in apparent viscosity of stirred slurry during production of semi-solid hypereutectic Al-Si alloy by slurry-melt mixing process.