材料工程2024，Vol.52Issue(4)：102-109,8.DOI:10.11868/j.issn.1001-4381.2022.000917
Ti-34Nb-4Zr-0.3O合金时效组织调控及其力学性能
Microstructure regulation and mechanical properties of Ti-34 Nb-4 Zr-0.3 O alloys by aging
齐欢 1武祥为 1张涵雅 1陈锋 2王玉会 3王春阳3
作者信息
- 1. 东南大学 材料科学与工程学院,南京 211189
- 2. 东南大学 材料科学与工程学院,南京 211189||东南大学江苏省先进金属材料高技术研究重点实验室,南京 211189
- 3. 中国航发北京航空材料研究院,北京 100095
- 折叠
摘要
Abstract
Metastable β type Ti-34Nb-4Zr-0.3O(mass fraction/%)alloy(TNZO)was prepared by vacuum arc melting,single-phase hot forging and cold rolling.The cold-rolled TNZO alloys were aged at low-temperature of 250℃and 300℃in order to reveal the effect of aging temperature and time on the precipitation behavior of ω phase and the mechanical properties of the alloys.The results show that ω phase precipitates in nanometer size as a result of low temperature aging which leads to the increase of strength and elastic modulus of the alloys.ω phase is easy to coarsen and agglomerate when the alloy is aged at 300℃,which results in the rapid drop of the elongation and embrittlement of the alloy.Short time aging at 250℃could make the ω phase precipitated dispersedly with small volume fraction,enabling the alloy to have excellent comprehensive properties of high strength,low modulus,ultra-high elasticity and good plasticity and show a broad application prospect in the field of aerospace elastic titanium alloys and medical implant titanium alloys.关键词
亚稳β钛合金/时效/ω相/力学性能Key words
metastable β titanium alloy/aging/ω phase/mechanical property分类
矿业与冶金引用本文复制引用
齐欢,武祥为,张涵雅,陈锋,王玉会,王春阳..Ti-34Nb-4Zr-0.3O合金时效组织调控及其力学性能[J].材料工程,2024,52(4):102-109,8.
