Ti-1300合金室温变形行为研究  

Ambient Temperature Deformation Behavior of Ti-1300 Alloy

作　　者：万明攀[1,2] 赵永庆[3] 曾卫东[1] 蔡钢[2] 

机构地区：[1]西北工业大学凝固技术国家重点实验室,陕西西安710072 [2]贵州大学,贵州贵阳550025 [3]西北有色金属研究院,陕西西安710016

出　　处：《稀有金属材料与工程》2015年第10期2519-2522,共4页Rare Metal Materials and Engineering

基　　金：陕西省重大科技成果转化引导专项(2012KTCG04-04);陕西省重点科技创新团队项目(2012KCT-23)

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。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.

关 键 词：Ti-1300合金 室温变形 位错滑移 变形机制 

分 类 号：TG146.23[一般工业技术—材料科学与工程]