Effect of Degassing Parameters on Mechanical Properties of EN AC-46000 Gravity Die Castings

被引：2

作者：

Gumienny, Grzegorz ^{[1
]}

Pisarek, Boguslaw ^{[1
]}

Szymczak, Tomasz ^{[1
]}

Gawronski, Jakub ^{[1
]}

Just, Pawel ^{[1
]}

Wladysiak, Ryszard ^{[1
]}

Rapiejko, Cezary ^{[1
]}

Pacyniak, Tadeusz ^{[1
]}

机构：

[1] Lodz Univ Technol, Dept Mat Engn & Prod Syst, PL-90924 Lodz, Poland

来源：

MATERIALS | 2022年 / 15卷 / 23期

关键词：

degassing; Al-Si alloys; mechanical properties; hydrogen content; ALUMINUM-ALLOYS; HIGH-SHEAR; MOLTEN; SOLIDIFICATION; HYDROGEN; BIFILMS;

D O I：

10.3390/ma15238323

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The article is devoted to the optimization of the degassing parameters of the AlSi9Cu3(Fe) alloy. The alloy was degassed with a solid degasser (Ecosal) and nitrogen or argon. The variable parameters were time and type of degasser. The test castings were made in permanent molds with an internal diameter of 25 mm and a length of 150 mm. The effect of the degassing time and the amount of degasser on the mechanical properties, as well as the hydrogen content and density index were investigated. The ALU SPEED TESTER developed by FMA was used to test the hydrogen content and the density index. Magmasoft software was used to design the geometry of the test castings. A significant effect of the solid degasser and degassing time on both the density index and the hydrogen content was demonstrated. Replacing nitrogen with argon did not bring any significant improvement in the above-mentioned parameters. The effect of degassing parameters on the mechanical properties of the EN AC-46000 alloy was much less significant, but was still visible. The optimal degassing parameters needed to obtain the highest strength parameters of the EN AC-46000 gravity die castings were determined.

引用

页数：13

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