Aging precipitation and recrystallization of rapidly solidified Cu-Cr-Zr-Mg alloy

In this paper, the recrystallization process during aging for a rapidly sol idified Cu-Cr-Zr-Mg alloy has been investigated. It is found that the disco ntinuous crystallization process has been partially retarded by the ultra-f ine and dispersed precipitation upon aging after deformation. Thus, a pheno menon of combined in situ and discontinuous recrystallization has been obse rved in the rapidly solidified Cu-Cr-Zr-Mg alloy. On the nucleation and gro wth of recrystallization, the precipitated phases are coarsened and dissolv ed in the front of grain boundaries following a re-precipitation in the rec rystallization area,which results in the much more dispersed precipitates. (C) 1999 Published by Elsevier Science S.A. All rights reserved.