Simultaneous achievement of high thermal conductivity, high strength and formability in Mg-Zn-Ca-Zr sheet alloy
Zehao Li, Taisuke Sasaki, T. Shiroyama, Asuka Miura, Ken‐ichi Uchida, K. Hono
Abstract
Lightweight magnesium alloys with good thermal conductance are in demand for structural components in portable devices. This work presents a strategy to achieve excellent thermal conductivity, room temperature (RT) formability and high strength in magnesium sheet alloys. We found that a Mg-1.6Zn-0.5Ca-0.4Zr alloy shows a substantial increase in thermal conductivity to over 130 W/(m·K) due to the reduced supersaturation of solute atoms in the matrix by the precipitation of Guinier-Preston (G.P.) zones while exhibiting excellent RT formability with a large Index Erichsen value of 8.1 mm, and a high yield strength of 227 MPa by peak aging treatment.
Topics & Concepts
Materials scienceFormabilityThermal conductivityAlloyMetallurgyPrecipitationMagnesium alloyMagnesiumSupersaturationComposite materialThermodynamicsPhysicsMeteorologyMagnesium Alloys: Properties and ApplicationsAluminum Alloys Composites PropertiesMetal and Thin Film Mechanics