Formation of ternary Mg�?�Cu�?�Dy bulk metallic glasses

Bulletin of materials science

Y Kang¹  F F Wu¹  L K Meng¹  K Q Qiu²  X F Wu³ 

[1] School of Materials Science and Engineering, Liaoning University of Technology, 121001 Jinzhou, PR China$$School of Materials Science and Engineering, Liaoning University of Technology, 121001 Jinzhou, PR ChinaSchool of Materials Science and Engineering, Liaoning University of Technology, 121001 Jinzhou, PR China$$;School of Materials Science and Engineering, Shenyang University of Technology, 110023 Shenyang, PR China$$School of Materials Science and Engineering, Shenyang University of Technology, 110023 Shenyang, PR ChinaSchool of Materials Science and Engineering, Shenyang University of Technology, 110023 Shenyang, PR China$$;School of Materials Science and Engineering, Liaoning University of Technology, 121001 Jinzhou, PR China$$School of Materials Science and Engineering, Shenyang University of Technology, 110023 Shenyang, PR China$$School of Materials Science and Engineering, Liaoning University of Technology, 121001 Jinzhou, PR ChinaSchool of Materials Science and Engineering, Liaoning University of Technology, 121001 Jinzhou, PR China$$School of Materials Science and Engineering, Shenyang University of Technology, 110023 Shenyang, PR China$$School of Materials Science and Engineering, Shenyang University of Technology, 110023 Shenyang, PR ChinaSchool of Materials Science and Engineering, Liaoning University of Technology, 121001 Jinzhou, PR China$$School of Materials Science and Engineering, Shenyang University of Technology, 110023 Shenyang, PR China$$

关键词: Mgâ€�?�Cuâ€�?�Dy;    glass-forming ability;    bulk metallic glass.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The glass-forming ability (GFA) of ternary Mgâ€�?�Cuâ€�?�Dy alloys was systematically investigated by using differential scanning calorimetry (DSC) and X-ray diffractometry (XRD) techniques. The results showed that a series of ternary Mgâ€�?�Cuâ€�?�Dy bulk metallic glasses (BGMs) with a diameter of 4â€�??8 mm were successfully fabricated in the system with conventional Cu-mold casting method. Mg₅₅Cu₃₂Dy₁₃, Mg₆₀Cu₂₇Dy₁₃, Mg₆₅Cu₂₅Dy₁₀ and Mg₇₀Cu₁₇Dy₁₃ BMGs exhibit a clear glass transition, a broad supercooled liquid region and different crystallization and melting behaviours. They have supercooled liquid region ($Delta T_{x}$) from 41 K to 65 K, reduced glass transition temperature ($T_{rg}$) from 0.5363 to 0.5974 and ð›�? parameter from 0.4038 to 0.4136. The ð›�? shows a relatively good agreement with the GFA of the BGMs. On the other hand, a high fracture compressive strength of 624 MPa was obtained for Mg₆₀Cu₂₇Dy₁₃ BMG.

【 授权许可】

Unknown