特种铸造及有色合金
特種鑄造及有色閤金
특충주조급유색합금
SPECIAL CASTING & NONFERROUS ALLOYS
2009年
7期
663-665
,共3页
变形铝合金%Fe、Si质量比%冷却速度%微观组织
變形鋁閤金%Fe、Si質量比%冷卻速度%微觀組織
변형려합금%Fe、Si질량비%냉각속도%미관조직
Wrought Aluminum Alloy%Fe/Si Ratio%Cooling Rate%Microstructure
采用金相显微镜、扫描电镜和XRD等手段,分析了Fe、Si质量比和冷却速度对AI-Mn系变形铝合金中第二相形貌及类型的影响.结果显示,Fe、Si质量比<2.5时,合金中的第二相化合物为骨骼状α-Al12(Fe,Mn)3Si相,Fe、si质量比2.5时开始形成针状β-AI85(Mn,Fe)14Si相化合物.而冷却速度增大时,促进形成骨骼状的α-AI12(Fe,Mn)3Si相.
採用金相顯微鏡、掃描電鏡和XRD等手段,分析瞭Fe、Si質量比和冷卻速度對AI-Mn繫變形鋁閤金中第二相形貌及類型的影響.結果顯示,Fe、Si質量比<2.5時,閤金中的第二相化閤物為骨骼狀α-Al12(Fe,Mn)3Si相,Fe、si質量比2.5時開始形成針狀β-AI85(Mn,Fe)14Si相化閤物.而冷卻速度增大時,促進形成骨骼狀的α-AI12(Fe,Mn)3Si相.
채용금상현미경、소묘전경화XRD등수단,분석료Fe、Si질량비화냉각속도대AI-Mn계변형려합금중제이상형모급류형적영향.결과현시,Fe、Si질량비<2.5시,합금중적제이상화합물위골격상α-Al12(Fe,Mn)3Si상,Fe、si질량비2.5시개시형성침상β-AI85(Mn,Fe)14Si상화합물.이냉각속도증대시,촉진형성골격상적α-AI12(Fe,Mn)3Si상.
Effects of Fe/Si ratio and cooling rate on morphologies and types of secondary phase in micro-structure of AI-Mn wrought aluminum alloy were in-vestigated by OM (optical microscope) and SEM (scanning electron microscope) and XRD (X-ray dif-fraction). The results reveal that with Fe/Si ratio lower than 2.5, skeleton α-Al12 (Fe, Mn)3 Si phase can be observed in the alloy, while Fe/Si ratio more than 2.5, acicular β-Al85 (Mn, Fe)14 Si phase can be found in the alloy. In addition, generation of skeletonα-Al12(Fe, Mn)3 Si phase can be promoted with in-creasing in cooling rate.
