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논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 308 - 312 (5page)
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초록· 키워드
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Effects of aging temperature and time on the aging behavior in AZ91 alloy and Sn containing AZ91 alloy(AZT915) have been investigated in the present study. The mode of precipitation, i.e. discontinuous andcontinuous precipitation in both alloys is strongly affected by the aging temperature. At low aging temperatureof 403 K, only discontinuous precipitation occurs at the grain boundaries, whereas at high aging temperatures of573 and 623 K only continuous precipitation occurs inside the grains. At intermediate temperature range(443 or 498 K) both discontinuous and continuous precipitation reactions occur. In AZT915, the Mg2Sn particlesat the grain boundary effectively reduce the available nucleation sites for discontinuous β precipitates,and slow down the movement of the grain boundary, resulting in suppression of discontinuous precipitation. Inaddition, increased local lattice strain by the presence of Sn in the α-Mg solid solution matrix acceleratesthe nucleation of the continuous precipitates at the early stage of aging treatment. Therefore, significantlyhigher peak hardness can be obtained within a shorter aging time in AZT915.
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참고문헌 (19)
참고문헌 신청
D. Wenwen / 2003 / Mat. Sci. Eng. A 356:1
전중환 / 2015 / Effect of Ca Addition on the Damping Capacity of Mg-Al-Zn Casting Alloys / Metals and Materials International 21(4):780~783
최윤일 / 2015 / Temperature Dependence of Initial Passivity Breakdown of AZ61 and AZ91D Mg Alloys in 0.1 M NaCl Solution / Metals and Materials International 21(5):857~864
김용호 / 2015 / AZ31 마그네슘 합금의 리튬 첨가량 변화에 따른 미세조직 및 기계적 특성 변화 / 대한금속·재료학회지 53(5):336~344
박순용 / 2016 / CaO첨가가 마그네슘 합금의 고온산화에 미치는 영향 / 대한금속·재료학회지 54(6):390~399
전중환 / 2015 / Effect of Ca Addition on the Damping Capacity of Mg-Al-Zn Casting Alloys / Metals and Materials International 21(4):780~783
최윤일 / 2015 / Temperature Dependence of Initial Passivity Breakdown of AZ61 and AZ91D Mg Alloys in 0.1 M NaCl Solution / Metals and Materials International 21(5):857~864
김용호 / 2015 / AZ31 마그네슘 합금의 리튬 첨가량 변화에 따른 미세조직 및 기계적 특성 변화 / 대한금속·재료학회지 53(5):336~344
박순용 / 2016 / CaO첨가가 마그네슘 합금의 고온산화에 미치는 영향 / 대한금속·재료학회지 54(6):390~399
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