| 학회 |
한국재료학회 |
| 학술대회 |
2013년 봄 (05/23 ~ 05/24, 여수 엠블호텔(THE MVL)) |
| 권호 |
19권 1호 |
| 발표분야 |
E. 구조 재료(Structural Materials) |
| 제목 |
The High Temperature Deformation Behavior of TiC0.98 grown by the R. F. Floating Zone Technique |
| 초록 |
In order to investigate the high temperature deformation behaviors of TiC0.98, the crystals were grown by r. f. floating zone technique and were deformed by compression test at temperature from 1283 to 2133 K and strain rate from 5.87ⅹ10-4 to 6.01ⅹ10-3/s. TiC0.98 exhibited a marked work-softening phenomena which is characteristic of covalently bonded materials such as Ge and Si, and the phenomena became less clear with increasing temperature and with decreasing strain rate. After the softening, work hardening is observed. The rate hardening decreases as the temperature increase. The stress-strain curve can be explained in terms of the increase in the athermal internal stress and the decrease in the thermal effective stress with the increase in dislocation density by the deformation. The upper yield stress is mainly determined by the frictional resistance to dislocation motion, and the athermal internal stress contribution is very small. |
| 저자 |
신순기 |
| 소속 |
강원대 |
| 키워드 |
high temperature deformation; floating zone technique; compression; work-softening; work hardening
|
| E-Mail |
|
