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Microstructure and Mechanical Behavior of In Situ Primary Si/Mg2Si Locally Reinforced Aluminum Matrix Composites Piston by Centrifugal Cast
Piston Centrifugal casting In situ composite Primary Si Mg2Si
2011/8/5
Al-Si pistons are frequently damaged by burning piston top surface due to elevated combustion temperature, and, by rubbing the first ring groove against the engine cylinder liner. To prevent from thes...
Microstructure and Mechanical Behavior of In Situ Primary Si/Mg2Si Locally Reinforced Aluminum Matrix Composites Piston by Centrifugal Casting
Piston Centrifugal casting In situ composite Primary Si Mg2Si
2011/8/4
Al-Si pistons are frequently damaged by burning piston top surface due to elevated combustion temperature, and, by rubbing the first ring groove against the engine cylinder liner.
Tribological Analysis of Mg2Si Particulates Reinforced Powder Metallurgy Magnesium Alloy Composites under Oil Lubrication Condition
Tribological Analysis Mg2Si Particulates Powder Metallurgy Magnesium Alloy Oil Lubrication Condition
2009/9/2
For the evaluation of wear behavior of Mg composites under oil lubrication conditions, powder metallurgy Mg97Y2Zn1 alloy reinforced with additive Mg2Si particles were fabricated by the repeated plasti...
Sb对过共晶Mg-4.8%Si合金中Mg2Si初晶变质的影响
过共晶Mg-Si合金 Sb 变质 Mg2Si初晶
2010/3/31
利用Mg-20%Sb中间合金对过共晶Mg-4.8%Si合金进行变质处理，考察Sb的含量对Mg2Si初晶变质效果(主要包括形态和尺寸)的影响规律，并讨论其变质机制。结果表明：Sb的加入量是决定其能否有效变质过共晶Mg-4.8%Si合金中Mg2Si初晶的重要因素；在未变质的过共晶Mg-Si合金中，Mg2Si初晶以粗大的树枝晶状为主；当Sb加入量低于0.8%(质量分数)时，Mg2Si初晶形态无明显改善，...
通过测定Al-Mg-Si合金晶界各组成相的极化曲线及不同Mg/Si比 Al-Mg-Si合金晶界组成相(Al-Mg2Si及Al-Mg2Si-Si)间的动态电化学偶合行为，研究了不同Mg/Si比Al-Mg-Si合金的晶间腐蚀机理。研究表明，晶界Si电位比其边缘Al基体正，在整个腐蚀过程中作为阴极导致其边缘Al基体的阳极溶解。晶界Mg2Si电位比其边缘Al基体负，在腐蚀初期将作为阳极而发生阳极溶解；由于...
Comparison of Sb and Sr on modification and refinement of Mg2Si phase in AZ61-0.7Si magnesium alloy
magnesium alloy AZ61-0.7Si alloy Mg2Si phase modification
2010/3/17
The effects of Sb and Sr on the modification and refinement of Mg2Si phase in an AZ61-0.7Si magnesium alloy were investigated and compared. The results indicate that the difference of Sb and Sr in the...
以Al-Si-Mg系的A356合金和Al-Mg-Si系的6061合金中的Mg2Si沉淀相为研究对象，通过场发射扫描电子显微镜(FE-SEM)的In-lens探头及低电压模式，分析Mg2Si沉淀相的析出情况及其表面形貌。结果表明：在低电压模式及In-lens探头双重条件下，可获得较好分辨率的Mg2Si沉淀相表面立体显微形貌；通过透射电子显微镜衍射分析发现在扫描电子显微镜中观察到的相确实为Mg2Si沉...