铸造工程
鑄造工程
주조공정
FOUNDRY ENGINEERING
2011年
4期
17-20
,共4页
周桂斌%刘子利%刘希琴%朱晓春%李健
週桂斌%劉子利%劉希琴%硃曉春%李健
주계빈%류자리%류희금%주효춘%리건
AM50%Y%显微组织%力学性能
AM50%Y%顯微組織%力學性能
AM50%Y%현미조직%역학성능
AM50%Y%microstructure%mechanical property
利用光学显微镜、扫描电镜和X射线衍射仪,分析研究了微量Y对AM504铸态合金组织及其室温和高温(200℃)力学性能的影响。结果表明,在AM50合金中加入质量分数1%Y,晶粒细化,连续或半连续网状分布的β-Mg17Al12相呈骨骼状或颗粒状弥散分布,同时晶界附近有大量块状新相Al2Y生成;合金的室温和高温抗拉强度分别提高了18.9%和23.2%;屈服强度分别提高了16.1%和20.5%;合金伸长率分别提高9.1%和11.7%。
利用光學顯微鏡、掃描電鏡和X射線衍射儀,分析研究瞭微量Y對AM504鑄態閤金組織及其室溫和高溫(200℃)力學性能的影響。結果錶明,在AM50閤金中加入質量分數1%Y,晶粒細化,連續或半連續網狀分佈的β-Mg17Al12相呈骨骼狀或顆粒狀瀰散分佈,同時晶界附近有大量塊狀新相Al2Y生成;閤金的室溫和高溫抗拉彊度分彆提高瞭18.9%和23.2%;屈服彊度分彆提高瞭16.1%和20.5%;閤金伸長率分彆提高9.1%和11.7%。
이용광학현미경、소묘전경화X사선연사의,분석연구료미량Y대AM504주태합금조직급기실온화고온(200℃)역학성능적영향。결과표명,재AM50합금중가입질량분수1%Y,정립세화,련속혹반련속망상분포적β-Mg17Al12상정골격상혹과립상미산분포,동시정계부근유대량괴상신상Al2Y생성;합금적실온화고온항랍강도분별제고료18.9%화23.2%;굴복강도분별제고료16.1%화20.5%;합금신장솔분별제고9.1%화11.7%。
The microstructure and mechanical property of as-cast AM50 alloys with and without Y addition have been investigated by optical microscopy, scanning electron microscopy and energy dispersion X-ray analysis. The results show that with addition of 1%Y to AM50 alloy, the grain is refined, the continuous or semi-continuous network morphology of fl-Mg17Al~2 phase tends to be in the skeletal or granular shape, and a large number of blocky A12Y phase is formed nearby the grain boundaries. The ultimate tensile strength at room temperature and at elevated temperature are increased by 18.9 % and 23.2% respectively, while yield strength are increased by 16.1% and 20.5% respectively. Meanwhile, the values of elongation at room temperature and at elevated temperature are increased by 9.1% and 11.7% respectively.