| 학회 |
한국재료학회 |
| 학술대회 |
2016년 봄 (05/18 ~ 05/20, 여수 디오션리조트 ) |
| 권호 |
22권 1호 |
| 발표분야 |
D. 구조 재료 분과 |
| 제목 |
Study on the microstructure and mechanical properties of equi-atomic substituted TiZrHfNiCu and TiZrHfNiCuM(M=Co, Nb) high-entropy alloys |
| 초록 |
In this study, alloys with composition of equi-atomic substituted TiZrHfNiCu, TiZrHfNiCuCo and TiZrHfNiCuNb high-entropy alloys (HEAs) were produced by suction casting method. The effects of addition elements on phase composition, microstructure and mechanical behaviors of the HEA were studied. The suction casted Ti20Zr20Hf20Ni20Cu20 HEA exhibits single C14 Laves phase (MgZn2-type) with fine homogeneous microstructure. When Co or Nb elements are added, morphologies are slightly modulated toward well-developed dendritic microstructure, phase constitutions are significantly changed from single Laves phase to mixed multi-phases as well as mechanical properties are also altered with increased plasticity and high strength. It is believed that modulated mechanical properties are mainly ascribed to the change of phase constitution and crystalline structure, together with the microstructural characteristics. This clearly reveals that the selection and addition of supplementary elements based on the formation rule for HEAs play an important role on the evolution of phase, microstructural morphology and mechanical properties of Ti20Zr20Hf20Ni20Cu20 HEA. |
| 저자 |
Hae Jin Park1, Young Seok Kim1, Jeong Tae Kim1, Sung Hwan Hong1, Jin Man Park2, Jin Yoo Suh3, Ki Buem Kim4
|
| 소속 |
1Sejong Univ., 2Samsung Electronics Co., 3LTD, 4Korea Institute Science and Technology |
| 키워드 |
<P>high entropy allloy; nanostructured materials; microstucture; mechanical properties</P>
|
| E-Mail |
|
