Cu添加6063アルミニウム合金中のMg_2Si平衡固溶度の熱処理温度依存性 Effects of heat treatment temperature on equilibrium solid solubility of Mg_2Si in Cu added 6063 aluminum alloys

この論文にアクセスする

この論文をさがす

著者

抄録

Specimens of Al–1%Mg<sub>2</sub>Si–X%Cu alloys were isothermally heat treated at several temperatures between 573 K and 848 K for enough long periods. The resistivity in equilibrium state was estimated by extrapolation of <i>t</i><sup>−1/3</sup> plots at 573 K and 623 K, and at other higher temperatures by simply averaging measured values after long enough time. For comparison, the equilibrium resistivity was calculated for the each temperatures of heat treatment under assumptions that 0.02%Ti is always in solution and that Mg<sub>2</sub>Si, Cu and Fe would dissolve in Al up to equilibrium concentration in pseudo-binary or binary system. Though interactions between different species of solute atoms, except between Mg and Si, were completely neglected in above simple and rough assumption, the calculated resistivity coincided with experimental values within 0.5 nΩm. This is exactly same as previously observed resistivity fluctuation in present alloys quenched from 848 K, which was interpreted by the microsegregation during solidification. This coincidence suggests that amount of Cu mingling in Mg–Si or Al–Fe precipitates will be very small in the equilibrium state. If Cu bearing precipitates were observed, total amount of Cu in the precipitates will be too small to decrease the resistivity of solid solution. In another report on 473 K aging behavior of present alloys, it was suggested that solute Cu would enhance degree of supersaturation during the aging. However in the equilibrium state, the Cu addition up to 0.72% seems not to elevate so much the temperature of perfect dissolution of 1% Mg<sub>2</sub>Si.

収録刊行物

  • 軽金属  

    軽金属 58(5), 199-204, 2008-05-30 

    The Japan Institute of Light Metals

参考文献:  17件

参考文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

被引用文献:  2件

被引用文献を見るにはログインが必要です。ユーザIDをお持ちでない方は新規登録してください。

各種コード

  • NII論文ID(NAID)
    10021989189
  • NII書誌ID(NCID)
    AN00069773
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    04515994
  • NDL 記事登録ID
    9536137
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z17-284
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
ページトップへ