| 학회 |
한국재료학회 |
| 학술대회 |
2020년 가을 (11/18 ~ 11/20, 휘닉스 제주 섭지코지) |
| 권호 |
26권 1호 |
| 발표분야 |
D. 구조 재료 분과 |
| 제목 |
공형압연 속도에 따른 Nb 튜브의 기계적 및 집합조직 변화 연구 |
| 초록 |
This study investigated the fabrication of Nb tubes by the caliber-rolling process at various rolling speeds from 1.4 m/min to 9.9 m/min at ambient temperature, and the effect of the caliber-rolling speed on the microstructural and microtextural evolution of the Nb tubes. The caliber-rolling process affected the grain refinement when the Nb tube had a higher fraction of low angle grain boundaries. However, the grain size was identical regardless of the rolling speed. The dislocation density of the Nb tubes increased with the caliber-rolling speed according to the Orowan equation. The reduction of intensity for the ＜111＞ fiber texture and the development of the ＜112＞ fiber texture with the increase of the strain rate are considered to have decreased the internal energy by increasing the fraction of the low-energy 3 boundaries |
| 저자 |
이종범, 정하국
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| 소속 |
한국생산기술(연) |
| 키워드 |
Nb 튜브; 공형압연; 집합조직; 결정립계 특성
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| E-Mail |
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