Ti-1300合金室温变形行为研究

Ambient Temperature Deformation Behavior of Ti-1300 Alloy

摘要:

利用OM和TEM系统研究了Ti-1300合金的室温变形行为。结果表明：Ti-1300合金在不同温度下进行固溶处理后进行拉伸变形，在应力-应变曲线上没有出现双屈服的现象；Ti-1300合金因含有较多的β稳定元素引起β相的稳定性增加，在室温变形机制主要是位错滑移和孪生；塑性变形过程中位错将产生滑移、缠结和割阶等交互作用，随着塑性变形量增加10%，Ti-1300合金的显微硬度约增加210 MPa

Abstract:

The deformation behavior of Ti-1300 alloy has been investigated using optical microscope (OM) and transmission electron microscope (TEM) at ambient temperature. The results show that the tensile stress-strain curves of Ti-1300 alloys solution treated at different temperatures don’t present a double yield effect. The Ti-1300 alloy contains a great deal of β stable elements, thus increasing the stability of β phase of this alloy for restraining stress/strain induced transformation. Therefore, the deformation mechanism of Ti-1300 alloy is mainly dislocation slip and twinning at room temperature. With the increase of the plastic deformation of 10%, the micro-hardness of Ti-1300 alloy increases by about 210 MPa. It can be attributed to the dislocation glide, dislocation tangles and their interaction in the plastic deformation process of Ti-1300 alloys