Influence of cooling path on solidification morphology and hot tearing susceptibility of an Al−Cu−Fe−Mg−Si alloy

被引：0

作者：

Zhou, B. ^{[1
]}

Apel, M. ^{[1
]}

Eiken, J. ^{[1
]}

Berger, R. ^{[1
]}

Gor, S. ^{[2
]}

Wolff, N. ^{[2
]}

机构：

[1] Access e. V., Intzestraße 5, Aachen,52072, Germany

[2] RWTH Aachen University, Foundry Institute, Intzestraße 5, Aachen,52072, Germany

来源：

Materialwissenschaft und Werkstofftechnik | 2024年 / 55卷 / 01期

关键词：

In this work; a numerical approach is applied to study the impact of local cooling conditions on the hot tearing in an aluminium-copper alloy with iron; magnesium and silicon as impurities. At first; CALPHAD-coupled multicomponent and multiphase-field simulations were performed to elucidate the effect of cooling conditions on solidification morphology in the final; critical stage of solidification. Then; the evolution of the melt flow permeability is derived from the simulated three-dimensional microstructures and discussed in the context of the Rappaz-Drezet-Gremaud criterion for hot tearing susceptibility. With increasing cooling rates; the microstructure becomes finer and the resulting permeability first increases and then saturates within the investigated range. It is shown that the Rappaz-Drezet-Gremaud hot-tearing criterion in combination with microstructure simulations responds to different cooling conditions in contrast to a Scheil-Gulliver based model or an evaluation of the average Kou-index. © 2024 Wiley-VCH GmbH;

D O I：

10.1002/mawe.202300167

中图分类号：

学科分类号：

摘要：

引用

页码：53 / 61