過剰にＭｇを含むＡｌ‐Ｍｇ２Ｓｉ合金の時効析出過程に対するＣｕまたはＡｇ添加の影響
スポンサーリンク
概要
- 論文の詳細を見る
The precipitates in Cu or Ag added excess Mg type Al–Mg–Si (ex.Mg) alloys at over aged condition have been observed by high resolution transmission electron microscope (HRTEM), classified according to characteristic of their HRTEM images, and compared with those in the ex.Mg alloy to understand the effect of Cu and Ag addition on their precipitation sequence. HRTEM images obtained for cross sections of precipitates in the Ag added ex.Mg (ex.Mg–Ag) alloy have been classified into five types according to the periodicity of bright dots in them; the random-type, parallelogram-type precipitates, parallelogram-type (60°) precipitate having interior angle about 60°, β″ and β′-phases. The β′-phase in this alloy was predominant in later stage of aging. HRTEM images obtained for cross sections of precipitates in the Cu added ex.Mg (ex.Mg–Cu) alloy have been also classified into the same five types of precipitates as those in ex.Mg–Ag alloy. In addition, the Q′ phase has been also observed in this alloy and it was predominant in later stage of aging. Different shape of precipitate has been also confirmed in both alloys. It is the lath shaped precipitate having elongated cross section, and it has been regarded as the elongated type precipitate. This elongated type precipitate in ex.Mg–Cu alloy was predominant in later stage of aging, although there were a few in ex.Mg–Ag alloy.
- 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.