New FeNiCrMo（P, C, B） high-entropy bulk metallic glasses with unusual thermal stability and corrosion resistance
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2020年第8期
论文作者：Yanhui Li Siwen Wang Xuewei Wang Meiling Yin Wei Zhang
文章页码：32 - 39
摘 要：New Fe20–35 Ni20 Cr20–30 Mo5–15(P0.6 C0.2 B0.2)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.
Yanhui Li，Siwen Wang，Xuewei Wang，Meiling Yin，Wei Zhang
Key Laboratory of Materials Modification by Laser, Ion, and Electron Beams (Ministry of Education), School of Materials Science and Engineering, Dalian University of Technology
摘 要：New Fe20–35 Ni20 Cr20–30 Mo5–15(P0.6 C0.2 B0.2)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.
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