| 학회 |
한국재료학회 |
| 학술대회 |
2013년 봄 (05/23 ~ 05/24, 여수 엠블호텔(THE MVL)) |
| 권호 |
19권 1호 |
| 발표분야 |
E. 구조 재료(Structural Materials) |
| 제목 |
Strength Properties of TiC-Mo Solid Solution by Compression Test |
| 초록 |
TiC-20 mol% Mo (δ-phase) and Mo-1.5 mol% TiC (β-phase) solid solutions were prepared and deformed by compression test in a temperature range from 293 to 2273 K and in a strain rate range from 4.9☓10-5 to 6.9☓10-3/s. The strengths of eutectic composite (Mo-24 mol% TiC) reported earlier were analysed from the strengths of component δ phase and β phase. It is found that the extremely high strength of the eutectic composite is due primarily to solution hardening of TiC by Mo, and that the δ phase undergoes an appreciable plastic deformation at 1473 K and above even at 0.2% plastic strain of the composite. The yield strength of the composites up to 1473 K is quantitatively explained by the rule of mixture, where internal stresses introduced by plastic deformation are taken into account. The magnitude of internal stresses in the component phases is evaluated on the assumption that both the components are equally strained. Above 1473 K, however, the evaluated yield strength is considerably larger than the measured strength, indicating that the effects of recovery of the internal stress and phase-boundary sliding become significant at such high temperatures. |
| 저자 |
신순기 |
| 소속 |
강원대 |
| 키워드 |
composites; solution hardening; yield strength; rule of mixture
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| E-Mail |
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