CAJ | 학술논문

对Ti-ANb-Ta,Ti-ANb-BTa-Zr系列合金进行了研究,探讨了固溶态下Ta、Zr对钛合金性能及组织的影响.在固溶态下,Ti-ANb-Ta,Ti-ANb-BTa-Zr合金均具有较低的弹性模量,达60 GPa;具有优良的塑性性能,伸长率最高达32%,断面收缩率最高达80%;合金抗拉强度随Ta、Zr含量的增加,在500～700 MPa之间变化,且呈上升趋势.合金固溶态显微组织主要是残余β+针状马氏体α″,随β稳定元素Ta和中性元素Zr增加,残余β增加,针状马氏体α″减少.
대Ti-ANb-Ta,Ti-ANb-BTa-Zr계렬합금진행료연구,탐토료고용태하Ta、Zr대태합금성능급조직적영향.재고용태하,Ti-ANb-Ta,Ti-ANb-BTa-Zr합금균구유교저적탄성모량,체60 GPa;구유우량적소성성능,신장솔최고체32%,단면수축솔최고체80%;합금항랍강도수Ta、Zr함량적증가,재500～700 MPa지간변화,차정상승추세.합금고용태현미조직주요시잔여β+침상마씨체α″,수β은정원소Ta화중성원소Zr증가,잔여β증가,침상마씨체α″감소.
Effects of Ta, Zr on properties and microstructure of solid solution Ti alloy were investigated by analyzing Ti-ANb-Ta, Ti-ANb-BTa-Zr series alloys. Solid solution Ti-ANb-Ta, Ti-ANb-BTa-Zr series alloys exhibit lower elastic modulus in which the lowest value is 58 GPa and excellent plastic performance in which maximum value of elongation and contraction of area reach 32% and 80%, respectively. With increasing in Ta and Zr contents, tensile strength of the alloys is increased in range of 500～700 MPa. Microstructure of the solid solution alloy is composed of residual β phase and acicular martensite α″, in which with increasing in Ta and Zr, residual β phase is increased with the decrease of acicular martensite α″.