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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 434 - 443 (10page)
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초록· 키워드
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The deformation behavior of Mg-3.7Gd-2.9Y-0.7Zn-0.7Zr magnesium alloy has been investigated by thermalcompression test conducted on a Gleeble-1500D thermal simulator in the temperature range of 375-475 °C and strain rate range of 0.001-1 s-1. It indicates that the addition of RE, the introduction of LPSO phasesand the segregation of Zr element near the grain boundaries contributed to the high activate energy (Q =354.08 kJ/mol) of the present Mg alloy. The long period stacking ordered (LPSO) phase could not onlystrengthen the alloy and contribute to the nucleation of dynamic recrystallization, but also re-precipitate in therecrystallization grains. The processing map based on MDMM and Murty’s instability criterion was more precisethan the one based on DMM and Prasad’s instability criterion. The processing map exhibited two workableregions with sufficient dynamic recrystallization: 415-435 °C, 0.001-0.006 s-1and 435-475 °C, 0.01-1 s-1. Theflow instability was prone to occur at low temperature and high strain rate associated with the appearanceof bands of flow localization and cracking.
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참고문헌 (33)
참고문헌 신청
G. Padmanaban / 2011 / Influences of Pulsed Current Parameters on Mechanical and Metallurgical Properties of Gas Tungsten Arc Welded AZ31B Magnesium Alloys / Metals and Materials International 17(5):831~839
M. Yamasaki / 2011 / Acta Mater 59:3646
X. S. Xia / 2013 / Mat. Sci. Eng. A 587:283
T. Honma / 2007 / Acta Mater 55:4137
P. Vostry / 1999 / Phys. Status Solidi A 175:491
M. Yamasaki / 2011 / Acta Mater 59:3646
X. S. Xia / 2013 / Mat. Sci. Eng. A 587:283
T. Honma / 2007 / Acta Mater 55:4137
P. Vostry / 1999 / Phys. Status Solidi A 175:491
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