Ti35Zr35Nb10Hf20-xTax high-entropy alloys with exceptional performance as biomedical load-bearing materials
简介：Achieving a balance between mechanical compatibility and biocompatibility in biomedical load-bearing metallic materials has long been a significant challenge.In this study,the d-electron alloy design the-ory in combination with the first-principles calculation and the calculation of phase diagrams was em-ployed to design novel high-entropy alloys composed entirely of non-toxic elements for biomedical appli-cations.By accurately tuning the parameters(Bo)and(Md)to control the phase stability,as-cast Ti-Zr-Nb-Hf-Ta biomedical high-entropy alloys with remarkably low Young's modulus,high yield strength,and large fracture elongation were developed without the need for intricate post-processing steps.The alloys are composed of single metastable β phase with an inhomogeneous distribution of elements at the nanoscale in it.The feature of metastable β phase and the binding energy approaching 0 eV/atom among the com-ponent atoms determine the low Young's modulus,while the high strength is mainly related with the solid solution strengthening and the presence of HfTa-rich clusters that can pin the movement of dislo-cations effectively,resulting in the excellent strength-ductility synergy.This work provides new insights into the development of biomedical load-bearing implant materials through multicomponent design.展开
学者：JiakunWangLiangZhuMinghangZhouLingtiKongJinfuLI
关键词：high-entropy alloyBiomedical materialalloy designMicrostructuremechanical property
在线出版日期：2026-01-27 （网站首发日期）
