内生型(Ti0.474Zr0.34Cu0.06-Be0.126)100-xFex(x=0,2)金属玻璃基复合材料的动态力学行为
Dynamic Mechanical Behavior of In-situ(Ti0.474Zr0.34Cu0.06-Be0.126)100-xFex(x=0,2)Bulk Metallic Glass Composites
肖海洋 1吕国建 1乔吉超1
作者信息
- 1. 西北工业大学力学与土木建筑学院,陕西西安 710072
- 折叠
摘要
为了解内生β-Ti相的Zr/Ti基金属玻璃复合材料的动态力学性能和热力学稳定性,采用力学弛豫谱研究了(Ti0.474Zr0.34-Cu0.06Be0.126)100-xFex(x=0,2)金属玻璃复合材料.通过引入Fe元素,提高了β-Ti相的稳定性.此外,还发现了一个异常的内耗峰,这是由于在亚稳的β-Ti相中析出ω-Ti所引起的.在玻璃化转变温度T以下,由于相变和非晶基体部分结晶的耦合效应,2种金属玻璃复合材料的储能模量均表现出异常过冲行为.所得结果为更好地理解内生亚稳β-Ti型金属玻璃复合材料的复杂动态力学弛豫行为提供了借鉴.
Abstract
To understand the dynamic mechanical properties and thermodynamic stability of β-Ti phase-embedded Zr/Ti-based bulk metallic glass composites(BMGCs),(Ti0.474Zr0.34Cu0.06Be0.126)100_xFex(x=0,2)BMGCs were prepared and investigated.Results show that by introducing Fe element,the stability of β-Ti phase is improved.An abnormal internal friction peak can be observed due to the precipitation of ω-Ti in the metastable β-Ti phase.Below the glass transition temperature T,both BMGCs show abnormal overshoot on storage modulus due to the coupling effect of phase transition and partial crystallization of amorphous matrix.This research provides information about the complex dynamic mechanical relaxation behavior of the in-situ metastable β-Ti BMGCs.
关键词
块体金属玻璃复合材料/动态力学分析/物理时效/动态非均匀性Key words
bulk metallic glass composites/dynamic mechanical analysis/physical aging/dynamic heterogeneity引用本文复制引用
基金项目
National Natural Science Foundation of China(51971178)
National Natural Science Foundation of China(52271153)
Natural Science Basic Research Plan for Distinguished Young Scholars in Shaanxi Province(2021JC-12)
Fundamental Research Funds for the Central Universities(D5000220034)
出版年
2024
NETL
NSTL
万方数据