| 학회 |
한국재료학회 |
| 학술대회 |
2019년 봄 (05/15 ~ 05/17, 평창 알펜시아 리조트) |
| 권호 |
25권 1호 |
| 발표분야 |
D. 구조 재료 분과 |
| 제목 |
Hot deformation behavior of Mg-Zn-Y alloys during multipass torsion testing |
| 초록 |
In order to investigate SRX, MDRX and DRX behavior, multi-pass torsion test of as-cast Mg-Zn-Y alloys was implemented. The torsion test was performed with variations ; the temperature of 400-500℃, strain rate(/sec) of 0.05-5, interrupted time(sec) of 0.5-100 and pass strain of 0.25-2ε_p. Before torsion test, heat treatment at 300, 400, 500℃ for 6 hours had been carried out. The results show that the alloy with I-phase pre-heated at 300℃ exhibits lower SRX and DRX behavior and faster SRV and DRV behavior compared to alloy with W-phase pre-heated at 400℃ which is thought to be the low interface energy of I-phase. For quantitative comparison, the fraction of recrystallization is determined from the flow curve. The dependence of temperature and stain rate is additionally discussed. |
| 저자 |
김용재, 김상욱, 손현우, 조창희, 이재철, 정택균, 현승균
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| 소속 |
인하대 |
| 키워드 |
Mg-Zn-Y alloy; Hot deformation; Multipass; Recrystallization.
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| E-Mail |
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