Microstructural Response to Growth Rate and Mg Additions During Directional Growth of Al-Cu-Mg Alloys

Berkdemir A., Gunduz M.

5th International Conference on Solidification and Gravity, Miskolc-Lillafured, Hungary, 6 - 09 September 2008, vol.649, pp.425-430 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 649
  • Doi Number: 10.4028/www.scientific.net/msf.649.425
  • City: Miskolc-Lillafured
  • Country: Hungary
  • Page Numbers: pp.425-430
  • Keywords: primary dendrite arm spacing, dendritic growth, directional solidification, PRIMARY SPACING SELECTION, DENDRITE ARM SPACINGS, SOLIDIFIED ALUMINUM, BINARY-ALLOYS, TIP RADIUS, STABILITY, PREDICTION
  • Kayseri University Affiliated: No


Al-rich Al-Cu-Mg alloys have wide range of applications for automotive and aerospace where the control of the original solidification microstructure is important to achieve desired properties. Under constant temperature gradient G (4.84 +/- 0.13 K.mm(-1)), a series of directional solidification experiments were performed at 6 different growth rates V (16.7 - 166.7 mu m/s) and 6 different Mg contents C(0-Mg) (0 - 5 wt.% Mg) of Al - 5wt.% Cu - (0-5)wt.% Mg alloys. The solid-liquid interface was investigated in as-quenched specimens. Primary dendrite arm spacing XI was measured on longitudinal and transverse sections of the specimens. The variations of lambda(1) with respect to V and C(0-Mg) were determined and the results were compared to the related theoretical models and the published data.