Novel TiNbTaZrMo high-entropy alloys for metallic biomaterials

作者：Todai Mitsuharu; Nagase Takeshi; Hori Takao; Matsugaki Aira; Sekita Aiko; Nakano Takayoshi^*

来源：Scripta Materialia, 2017, 129: 65-68.

DOI：10.1016/j.scriptamat.2016.10.028

• Biomaterials
• High-entropy alloys (HEAs)
• Microstructure
• Solidification
• Crystal structure

A novel equiatomicTiNbTaZrMo high-entropy alloy (HEA) was developed as a new metallic biomaterial. The constituent elements of the HEA were biocomparable, and the HEA was designed based on parameters such as the mixing enthalpy (Delta H-mix), the omega parameter (Omega), the delta parameter (delta), and the valence electron concentration (VEC) theory. The bcc solid solution phases with the different lattice constants were obtained in as-cast and annealed states. The HEA showed considerable strength with deformability and superior biocompatibility comparable to pure Ti. This study demonstrated the possibility of using HEAs as a new class of metallic biomaterials.

• 出版日期2017-3-1