Modelling the Development of Microsegregation during Solidification of an Al-Cu-Mg-Si Alloy
スポンサーリンク
概要
- 論文の詳細を見る
In the as-cast state, wrought aluminium alloys present chemical heterogeneities, the so-called microsegregations, which are due to the partitioning of alloying elements between liquid and solid during solidification. While most of the experimental characterizations of solute distribution reported in the literature are dealing with fully solidified material, this paper presents results related to the build-up of microsegregation during the solidification of an aluminium alloy. The features of the corresponding cumulative distributions are presented and then discussed by comparing them to predictions made with a numerical programme which takes into account both the build-up of the main solutes in the liquid and their diffusion in the solid during the solidification. From this comparison, it is concluded that the build-up of microsegregation during the solidification of aluminium alloys could be described as a phenomenon which occurs in a spherical elementary volume element the diameter of which equals the dendrite arm spacing, and which is not greatly affected by the structural coarsening during solidification. The discrepancies between the calculated and measured cumulative distributions at low solid fraction are associated with a bias of the experimental distributions due to the physical noise of X-ray emission.
- 社団法人 日本鉄鋼協会の論文
- 1995-06-15
著者
-
Lacaze Jacques
Laboratoire Des Materiaux Ura-cnrs 445 Ensct
-
Lesoult Gerard
Lsg2m Umr 7584 Cnrs-inpl-uhp
-
Lesoult Gerard
Lsg2m Ura-cnrs 159 Ecole Des Mines
関連論文
- Modelling of the Eutectoid Reaction in Spheroidal Graphite Fe-C-Si Alloys
- Experimental Study of Free Growth of Equiaxed NH_4Cl Crystals Settling in Undercooled NH_4Cl-H_2O Melts
- Phases Equilibrium Study in Quaternary Iron-rich Fe-Al-Mn-C Alloys
- Modelling the Development of Microsegregation during Solidification of an Al-Cu-Mg-Si Alloy