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OA
Synergistic improvement of specific strength and plasticity achieved in Ti-based metallic glass designed based on quasicrystal structure
在高性能结构材料的发展中,实现轻质、高强与良好塑性的平衡始终是材料设计的重要挑战.钛基金属玻璃因其极高的比强度而备受关注,但强度与塑性之间的固有矛盾长期限制了其应用潜力.本文基于前期由准晶Ti40Zr40Ni20衍生的(Ti40Zr40Ni20)72Be28块体金属玻璃体系,通过引入少量Al元素实现了性能的协同优化.结果表明,((Ti40Zr40Ni20)72Be28)97Al3块体金属玻璃的比强度高达5.34×105 N·m/kg,创造了Ti基金属玻璃的新纪录,同时塑性应变达到了13％,突破了金属玻璃比强度-塑性的性能界限.结构分析表明,Al的微合金化有效继承并调控了源自准晶相的短程有序结构特征,从而实现了强度与塑性的协同提升.本研究为Ti基块体金属玻璃的成分设计及其在轻量化结构材料领域的应用提供了新的思路.
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.
蔡正清;李子敬;冯士东;王利民;刘日平
燕山大学亚稳材料全国重点实验室,先进结构材料中心,秦皇岛 066004燕山大学理学院,秦皇岛 066004燕山大学亚稳材料全国重点实验室,先进结构材料中心,秦皇岛 066004燕山大学亚稳材料全国重点实验室,先进结构材料中心,秦皇岛 066004||河北工业大学材料科学与工程学院,天津 300130燕山大学亚稳材料全国重点实验室,先进结构材料中心,秦皇岛 066004
钛基金属玻璃比强度塑性微合金化
titanium-based bulk metallic glassesspecific strengthplasticitymicroalloying
《物理学报》 2026 (2)
15-21,7
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).
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