Characteristics of Al-Si Alloys with High Melting Point Elements for High Pressure Die Casting

Tomasz Szymczak; Grzegorz Gumienny; Leszek Klimek; Marcin Goły; Jan Szymszal; Tadeusz Pacyniak

doi:10.3390/ma13214861

Characteristics of Al-Si Alloys with High Melting Point Elements for High Pressure Die Casting

Materials (Basel). 2020 Oct 29;13(21):4861. doi: 10.3390/ma13214861.

Authors

Tomasz Szymczak¹, Grzegorz Gumienny¹, Leszek Klimek², Marcin Goły³, Jan Szymszal⁴, Tadeusz Pacyniak¹

Affiliations

¹ Department of Materials Engineering and Production Systems, Lodz University of Technology, 90-924 Lodz, Poland.
² Institute of Materials Science and Engineering, Lodz University of Technology, 90-924 Lodz, Poland.
³ Department of Physical & Powder Metallurgy, AGH University of Science and Technology, 30-059 Krakow, Poland.
⁴ University of Occupational Safety Management in Katowice, 40-007 Katowice, Poland.

Abstract

This paper is devoted to the possibility of increasing the mechanical properties (tensile strength, yield strength, elongation and hardness) of high pressure die casting (HPDC) hypoeutectic Al-Si alloys by high melting point elements: chromium, molybdenum, vanadium and tungsten. EN AC-46000 alloy was used as a base alloy. The paper presents the effect of Cr, Mo, V and W on the crystallization process and the microstructure of HPDC aluminum alloy as well as an alloy from the shell mold. Thermal and derivative analysis was used to study the crystallization process. The possibility of increasing the mechanical properties of HPDC hypoeutectic alloy by addition of high-melting point elements has been demonstrated.

Keywords: crystallization; mechanical properties; microstructure; thermal and derivative analysis.