摘要：High-entropy alloys(HEAs),which were introduced as a pioneering co.cept in 2004,have captured the keen interest of nu-merous ***,in this co.text,can be perceived as representing disorder and *** co.trast,elemental co.posi-tions within alloy systems occupy specific structural sites in space,a co.cept referred to as *** acco.dance with Shannon entropy,structure is analogous to ***,the arrangement of atoms within a material,termed its structure,plays a pivotal role in dictating its *** addition to expanding the array of options for alloy co.posites,HEAs afford ample opportunities for diverse structural *** profound influence of distinct structural features on the exceptional behaviors of alloys is undersco.ed by numer-ous *** features include remarkably high fracture strength with excellent ductility,antiballistic capability,exceptional radi-ation resistance,and co.rosion *** this paper,we delve into various unique material structures and properties while elucidating the intricate relationship between structure and performance.

摘要：Mg-Zn-Ca-Mn series alloys are developed as promising candidates of 5G co.munication devices with excellent thermal co.ductivities,great ductility,and acceptable *** present paper,Mg-x Zn-0.4Ca-0.2Mn(x=2wt%,4wt%,6wt%)alloys were prepared by a near-solidus extrusion and the effect of Zn co.tent on mechanical and thermal properties were *** results showed that the addition of minor Ca led to the formation of Ca_(2)Mg_(6)Zn_(3) eutectic phase at grain boundaries.A type of bimodal microstructure occurred in the as-extruded alloys,where elongated co.rse deformed grains were embedded in refined recrystallized grains ***,both yield strength and ductility of the alloys were significantly enhanced after extrusion due to the great grain ***,higher Zn co.tent led to the increment in yield strength and a slight reduction in elongation due to the larger fractions of seco.d phase *** room temperature thermal co.ductivity of as-extruded alloys was also improved co.pared with that of as-cast *** increment of Zn co.tent decreased the thermal co.ductivity of both as-cast and as-extruded alloys,which was due to the increased seco.d phase fraction and solution atoms in the matrix,that hindering the motion of *** as-extruded Mg-2Zn-0.4Ca-0.2Mn(wt%)alloy exhibited the highest elongation of 27.7% and thermal co.ductivity of 139.2 W/(m·K),co.bined with an acceptable ultimate tensile strength of 244.0 *** present paper provides scientific guidance for the preparation of lightweight materials with high ductility and high thermal co.ductivity.