New FeNiCrMo(P, C, B) high-entropy bulk metallic glasses with unusual thermal stability and corrosion resistance  

作　　者：Yanhui Li Siwen Wang Xuewei Wang Meiling Yin Wei Zhang 

机构地区：[1]Key Laboratory of Materials Modification by Laser,Ion,and Electron Beams(Ministry of Education),School of Materials Science and Engineering,Dalian University of Technology,Dalian,116024,China

出　　处：《Journal of Materials Science & Technology》2020年第8期32-39,共8页材料科学技术（英文版）

基　　金：financial support of the projects from the National Natural Science Foundation of China(Nos.51871039,51571047,51771039);the Fundamental Research Funds for the Central Universities(DUT17LAB10)。

摘　　要：New Fe(20–35) Ni(20) Cr(20–30) Mo(5–15)(P(0.6) C(0.2) B(0.2))(20) bulk metallic glasses with excellent thermal stability,strength, and corrosion resistance have been developed through the high-entropy alloy design strategy.The high-entropy bulk metallic glasses(HE-BMGs) possess larger supercooled liquid regions of ~69 K,higher crystallization onset temperatures of ~852 K, larger undercoolings of ~109 K, and more sluggish crystallization process upon heating than the conventional metallic glass benefited from the high mixing entropy effect. The HE-BMGs also exhibit ultrahigh strength of ~3.4 GPa, Vickers hardness of ~1107,and superior corrosion resistance in acids and Na Cl solutions by formation of highly stable Cr-and Moenriched passive films. The new metal-metalloid HE-BMG system and exceptional properties give the alloys good promise for both scientific and engineering applications.

关 键 词：High-entropy bulk metallic glasses Thermal stability Crystallization Corrosion resistance FeNiCrMo(P C B)alloys 

分 类 号：TG139.8[一般工业技术—材料科学与工程]