中国物理B ›› 2020, Vol. 29 ›› Issue (6): 66401-066401.doi: 10.1088/1674-1056/ab8628

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇    下一篇

Effect of Sn and Al additions on the microstructure and mechanical properties of amorphous Ti-Cu-Zr-Ni alloys

Fu-Chuan Chen(陈福川), Fu-Ping Dai(代富平), Xiao-Yi Yang(杨霄熠), Ying Ruan(阮莹), Bing-Bo Wei(魏炳波)   

  1. Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions of Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China
  • 收稿日期:2020-02-26 修回日期:2020-03-31 出版日期:2020-06-05 发布日期:2020-06-05
  • 通讯作者: Fu-Ping Dai E-mail:fpdai@nwpu.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51671161, U1806219, U1660108, and 51327901) and the Research Project of the Natural Science Foundation of Shanxi Province, China (Grant Nos. 2017JM5116 and 2020JZ-08).

Effect of Sn and Al additions on the microstructure and mechanical properties of amorphous Ti-Cu-Zr-Ni alloys

Fu-Chuan Chen(陈福川), Fu-Ping Dai(代富平), Xiao-Yi Yang(杨霄熠), Ying Ruan(阮莹), Bing-Bo Wei(魏炳波)   

  1. Key Laboratory of Material Physics and Chemistry under Extraordinary Conditions of Ministry of Education, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2020-02-26 Revised:2020-03-31 Online:2020-06-05 Published:2020-06-05
  • Contact: Fu-Ping Dai E-mail:fpdai@nwpu.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 51671161, U1806219, U1660108, and 51327901) and the Research Project of the Natural Science Foundation of Shanxi Province, China (Grant Nos. 2017JM5116 and 2020JZ-08).

摘要: Amorphous Ti-Cu-Zr-Ni alloys with minor addition of Sn and Al were prepared by melt spinning technique. The effects of Sn and Al additions on the microstructures and mechanical properties of glassy ribbons were investigated. The amorphous state of ribbons was confirmed by x-ray diffraction and transmission electron microscopy, where those ribbons with Sn addition exhibited a fully amorphous state. The characteristic temperature indicates that Ti45Cu35Zr10Ni5Sn5 alloy has a stronger glass-forming ability, as proven by differential scanning calorimetry. Ti45Cu35Zr10Ni5Al5 alloy showed a better hardness of 9.23 GPa and elastic modulus of 127.15 GPa and good wear resistance. Ti45Cu35Zr10Ni5Sn5 alloy displayed a pop-in event related to discrete plasticity according to nanoindentation. When the temperature is below 560 K, Ti45Cu35Zr10Ni5Sn5 alloy mainly exhibits elasticity. When the temperature rises between 717 K and 743 K, it shows a significant increase in elasticity but decrease in viscoelasticity after the ribbon experiences the main relaxation at 717 K. When the temperature is above 743 K, the ribbon shows viscoplasticity.

关键词: metallic glasses, amorphous ribbons, mechanical properties, nanoindentation

Abstract: Amorphous Ti-Cu-Zr-Ni alloys with minor addition of Sn and Al were prepared by melt spinning technique. The effects of Sn and Al additions on the microstructures and mechanical properties of glassy ribbons were investigated. The amorphous state of ribbons was confirmed by x-ray diffraction and transmission electron microscopy, where those ribbons with Sn addition exhibited a fully amorphous state. The characteristic temperature indicates that Ti45Cu35Zr10Ni5Sn5 alloy has a stronger glass-forming ability, as proven by differential scanning calorimetry. Ti45Cu35Zr10Ni5Al5 alloy showed a better hardness of 9.23 GPa and elastic modulus of 127.15 GPa and good wear resistance. Ti45Cu35Zr10Ni5Sn5 alloy displayed a pop-in event related to discrete plasticity according to nanoindentation. When the temperature is below 560 K, Ti45Cu35Zr10Ni5Sn5 alloy mainly exhibits elasticity. When the temperature rises between 717 K and 743 K, it shows a significant increase in elasticity but decrease in viscoelasticity after the ribbon experiences the main relaxation at 717 K. When the temperature is above 743 K, the ribbon shows viscoplasticity.

Key words: metallic glasses, amorphous ribbons, mechanical properties, nanoindentation

中图分类号:  (Metallic glasses)

  • 64.70.pe
63.50.Lm (Glasses and amorphous solids) 62.20.-x (Mechanical properties of solids) 65.60.+a (Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.)