MECHANICAL PROPERTIES AND FRACTURE ANALYSIS OF AlCu4MgSi ALLOY INGOTS OBTAINED BY HORIZONTAL CONTINUOUS CASTING

被引：5

作者：

Nuckowski, P. M. ^{[1
]}

Wrobel, T. ^{[2
]}

机构：

[1] Silesian Tech Univ, Fac Mech Engn, Inst Engn Mat & Biomat, 18A Konarskiego Str, PL-44100 Gliwice, Poland

[2] Silesian Tech Univ, Fac Mech Engn, Dept Foundry Engn, 7 Towarowa Str, PL-44100 Gliwice, Poland

来源：

ARCHIVES OF METALLURGY AND MATERIALS | 2019年 / 64卷 / 01期

关键词：

AlCu4MgSi alloy; horizontal continuous casting; fracture analysis; mechanical properties of ingots; aluminum;

D O I：

10.24425/amm.2019.126225

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The article presents the results of research concerning AlCu4MgSi alloy ingots produced using horizontal continuous casting process under variable conditions of casting speed and cooling liquid flow through the crystallizer. The mechanical properties and structure of the obtained ingots were correlated with the process parameters. On the basis of the obtained results, it has been shown that depending on the cooling rate and the intensity of convection during solidification, significant differences in the mechanical properties and structure and of the ingots can occur. The research has shown that, as the casting speed and the flow rate of the cooling liquid increase, the hardness of the test samples decreases, while their elongation increases, which is related to the increase of the average grain size. Also, the morphology of the intermetallic phases precipitations lattice, as well as the centerline porosity and dendrite expansion, significantly affect the tensile strength and fracture mechanism of the tested ingots.

引用

页码：113 / 118

页数：6