Figures and crystal structures of intermediate α'phases in Al-Zn alloys
スポンサーリンク
概要
- 論文の詳細を見る
The figures and crystal structures of intermediate α' phases in Al-Zn alloys artificially aged at high temperatures were studied by means of transmission electron microscopy and X-ray diffractometer as functions of aging time.At the earlest stage of aging, a lenticular α' phase parallel to {111} matrix planes was present and finally it grew up to about 3, 000 Å in dia. and up to about 200 Å in thickness. Interference fringes were detected by electron microphotographs in these precipitates. Most of these fringes having spacings of the order of several hundred Angstroms originated from the Moiré fringe contrast, but a part of them would originate from the displacement fringe contrast.It was determined by the Moiré fringe contrast that the astructure of the lenticular α' phase was rhombohedral lattice with a = 3.991 Å and α = 91°45'. The lenticular α' phase was converted into parallelopiped figure, which was achieved by the introduction of misfit dislocation to the interface. In final, the α' phase was changed from parallelopiped to prismatic figure.
- 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.