物理学报2026，Vol.75Issue(2)：15-21,7.DOI:10.7498/aps.75.20251415
基于准晶结构设计的Ti基金属玻璃实现比强度与塑性的协同提升
Synergistic improvement of specific strength and plasticity achieved in Ti-based metallic glass designed based on quasicrystal structure
摘要
Abstract
Achieving a balance between low density,high strength,and good ductility remains a major challenge in the development of structural materials.Ti-based bulk metallic glasses(BMGs)have attracted considerable attention due to their exceptionally high specific strength.However,the intrinsic strength-plasticity trade-off has hindered their practical applications.Based on a quasicrystal-derived structural heredity and minor-element microalloying,this work realizes a synergistic enhancement of specific strength and plasticity in Ti-based BMGs.The resulting((Ti40Zr40Ni20)72Be28)97Al3 BMGs demonstrate an ultrahigh specific strength of 5.34 × 105 N·m·kg-1,establishing a new record for Ti-based BMGs,along with a plastic strain of 13％,breaking through the traditional strength-plasticity limitation of BMGs.Structural analyses show that Al microalloying effectively inherits and modulates the short-range order derived from quasicrystalline structures,thereby achieving an observed synergistic enhancement in both strength and plasticity.This work provides new insights into composition design and lightweight structural applications of Ti-based BMGs.关键词
钛基金属玻璃/比强度/塑性/微合金化Key words
titanium-based bulk metallic glasses/specific strength/plasticity/microalloying引用本文复制引用
蔡正清,李子敬,冯士东,王利民,刘日平..基于准晶结构设计的Ti基金属玻璃实现比强度与塑性的协同提升[J].物理学报,2026,75(2):15-21,7.基金项目
国家重大科研仪器研制项目(批准号:52127808)和国家自然科学基金(批准号:52471185,52271155)资助的课题. Project supported by the National Major Scientific Instrument Research Program(Grant No.52127808)and the National Natural Science Foundation of China(Grant Nos.52471185,52271155). （批准号:52127808）
