| 학회 | 한국재료학회 |
| 학술대회 | 2009년 봄 (05/21 ~ 05/22, 무주리조트) |
| 권호 | 15권 1호 |
| 발표분야 | 구조재료 |
| 제목 | Cyclic oxidation behavior of Ti-48Al-2Mn-2Nb-(0~1%)W alloys between 800 and 1000oC in air. |
| 초록 | The cyclic oxidation behavior of Ti-48Al-2Mn-2Nb-(0~1%)W (at%) were studied in order to find the effect of W on the oxidation behavior of Ti-48Al-2Mn-2Nb. Tests were performed in air between 800 and 1000 oC for 100 hr. At 800 and 900 oC, Ti-48Al-2Mn-2Nb-1W showed an excellent cyclic oxidation resistance, displaying much better resistance than Ti-48Al-2Mn-2Nb-(0, 0.5)W. During cooling at 900 and 1000 oC, the oxide scale formed on Ti-48Al-2Mn-2Nb-(0~1%)W was prone to spallation. The oxide scales formed consisted primarily of an outer TiO2 layer, an intermediate Al2O3-rich layer, and an inner TiO2-rich layer. Microstructural changes of the Ti-48%Al-2%Cr-2%Nb-(0, 0.5, 1%)W intermetallics that occurred by cyclic oxidation were investigated by EPMA, XRD, and SEM in this study. This work was supported by KICOS of Korea and Ministry of Science and Education of Ukraine through the Korea-Ukraine Joint Research Program. |
| 저자 | Sang-Hwan Bak1, Dong-Bok Lee2 |
| 소속 | 1School of Advanced Materials Science & Engineering, 2Sungkyunkwan Univ. |
| 키워드 | Cyclic oxidation; Ti-48Al-2Mn-2Nb-(0~1%)W; spallation; intermetallics |
