Ti-Nb合金中β/α″相界面的研究  

Investigation ofβ/α″interface in Ti-Nb alloy

作　　者：孙锦辉 SUN Jin-hui(School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China

出　　处：《Journal of Central South University》2023年第11期3709-3720,共12页中南大学学报（英文版）

摘　　要：本文用高分辨透射电子显微镜研究了β型Ti-Nb基合金中变形带内部的β/α″相界面,还用马氏体相变拓扑模型(TM)估算了α″相惯习面附近的弹性应力场。结果表明,α″相惯习面附近的弹性应力太小,以至于不会引起应力诱发β→ω相变。此外,{332}<113>_(β)孪晶是在应力诱发的α″相内部产生的,并且孪晶和{110}_(β)/{00-1}_(α")相界面有关。Theβ/α″interface in deformation bands was studied using high resolution transmission electron microscopy(HRTEM)observations inβ-type titanium-niobium-based(Ti-Nb)alloys,and the elastic stress near theα″habit plane was estimated using a topological model of martensitic transformation(TM).The results indicate that the elastic stress near theα″habit plane is too small to causeβtoωtransformation.In addition,the{332}<113>_(β)twin is formed within the stress-inducedα″phase,and is closely related to the{110}_(β)/{001ˉ}_(α″)interfaces.

关 键 词：Ti-Nb基合金 β→α″相变 β→ω相变 α″相惯习面附近的弹性应力 β/α″相界面 

分 类 号：TG146.23[一般工业技术—材料科学与工程]