Development of Mg–Zn–Y–Zr casting magnesium alloy with high thermal conductivity

• DOI: 10.1016/j.jma.2020.11.020
• Publication Date: 2021-02-18T06:28:01Z
• Authors: V.E. Bazhenov; A.V. Koltygin; M.C. Sung; S.H. Park; Yu.V. Tselovalnik; A.A. Stepashkin; A.A. Rizhsky; M.V. Belov; V.D. Belov; K.V. Malyutin
• Keywords: Elongation; 6063 aluminium alloy; Tearing

Magnesium alloys are used in aircraft because of their light weight. However, for these to be applied electronic devices, high thermal conductivities required. Several high-potential compositions Mg–Zn–Y–Zr were selected by phase composition and freezing ranges calculated using Thermo-Calc software. The prepared, fluidity, hot tearing susceptibility, mechanical properties, conductivity obtained compared. alloy composed Mg–4 wt% Zn–3 Y–0.3 Zr was further investigation, its satisfactory properties. alloy's fluidity susceptibility similar those the widespread AZ91 commercial casting magnesium alloy. influence a heat treatment regime on microstructure, conductivity, properties developed also investigated. It established that room temperature after aging at 300 °C 5 h 105 W/mK. Additionally, following tensile test results aged condition: 120 MPa yield strength, 200 ultimate 4% elongation. utilization solid solution 520 8 prior can promote up 9% increase as material with industrial applications.