| 학회 | 한국재료학회 |
| 학술대회 | 2016년 봄 (05/18 ~ 05/20, 여수 디오션리조트 ) |
| 권호 | 22권 1호 |
| 발표분야 | D. 구조 재료 분과 |
| 제목 | Effect of Nb on Microstructure & Mechanical properties of Ti-based eutectic alloy |
| 초록 | Ti-based nano-structured dendrite eutectic composites have been engendered considerable interest due to their good mechanical and physical properties such as high strength, high toughness, corrosion resistance and wear resistance compared to conventional microcrystalline materials. It is responsible for outstanding mechanical properties featured by the volume fraction, size, morphology, chemical composition difference and distribution of the constituent phases with different length scale, which consist of the micron-scale dendrites and the ultrafine eutectic matrix. In particular, interaction of the the soft dendrite and nano-scale eutectic matrix during deformation can achieve a novel high strength composites combined with large plasticity. In this study, the high strength (T82Sn18)100-xNbx (x=0~15) ultrafine eutectic composites with large plasticity are developed. Nb is selected because it is known as β -Ti stabilizer and Nb has large solubility in Ti than Sn. The addition of Nb in the Ti-Sn eutectic composite has a strong effect to decrease the size of the duplex colony and to increase the volume fraction of the β -Ti solid solution phase. Finally, The alloy is composed of a single β –Ti solid solution phase. These micro-structural evolutions in Ti-Sn-Nb alloys are effective to improve both strength and plasticity. In particular (Ti82Sn18)100-xNbx alloy with x=11 exhibit excellent combination of the high yield strength (~1327 Mpa) and large plasticity (~36.5 %) at room temperature compression. |
| 저자 | Youngseok Kim1, Haejin Park2, Sunghwan Hong2, Jeongtae Kim2, Jinyoo Suh3, Jinman Park4, Kibuem Kim1 |
| 소속 | 1Sejong Univ., 2sejong Univ., 3Korea Institute of Science & Technology, 4Samsung Electronics Co. |
| 키워드 | eutectic alloy; microstructure; mechanical property |
