pISSN : 1598-706X / eISSN : 2288-8381
한국주조공학회지 (23권4호 204-211)
The Effect of the Heat Treatment Conditions on the Microstructure and Hardness of Ti-Nb Alloys
Ti-Nb계 합금의 미세조직 및 경도변화에 미치는 열처리 조건의 영향
Doh-Jae Lee, Kyung-Ku Lee, Kwang-Min Lee, Ju-Young Hwang
Chonnam National University
Ti-3wt.%Nb(αtype), Ti-2oWt.%Nb(α+β, type) and Ti-4owt.%Nb(β type) alloys were melted by vacuum arc rernelting. The specimens were homogenized at 1050°C for 24 hr and were then hot rolled to 50% reduction. Each alloys were solution heat treated at ,β zone and α+ β, zone after homogenization, and then aged. The microstructural and hardness changes in Ti-Nb alloys with Nb contents were investigated by SEM, XRD and hardness tester. The microstructural change from equiaxied to acicular and the increase of β phase in Ti-Nb alloys were obtained when the Nb content increased. The higher hardness value of α+β type alloy was obtained compared to the other alloys.
VAR, Ti-Nb, Widmanstatten, Biomaterial
PDF