过共晶Al-Si合金熔体中初生硅生长特性 - TNMSC 关键字: 初生硅; 晶体生长; 铝硅合金[gap=1031]Key words: primary silicon; crystal growth; Al-Si alloy
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7Mg-0.5Ni变形合金 关键字: Al-Si合金；初晶硅；磷变质；热变形；拉伸性能[gap=1392]Key words: Al-Si alloy; primary silicon; phosphorus modification; hot deformation; tensile property..
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Spheroidal Primary Silicon 球团状初生Si
co-modification primary silicon 初晶硅
Morphologies of Primary Silicon 初生硅形态
The dispersed primary silicon phase was also a strengthening phase. At high temperature the main reasons for the strength decrease and plasticity increase were the increasing of the dislocation motion and the dissolving of some precipitated phases.
分析了合金的强化机制,认为合金中高体积分数的弥散相和沉淀相对位错的钉扎作用,是合金强化的主要原因;挤压后细小弥散的初晶硅相同样起到了强化作用;高温条件下,位错的运动能力增强,部分沉淀相溶解是其强度降低、塑性增加的主要原因。
参考来源 - 喷射沉积耐热高硅铝合金组织及性能But low temperature has negative effect that the primary silicon will reunite easily if the stirring time is too long.
但低温也有其负面影响,在搅拌时间过长时,初生硅容易团聚长大。
参考来源 - 半固态过共晶铝硅合金的电磁搅拌工艺与性能研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The value of hypereutectic Al Si alloys is their fine primary silicon particles.
而使高硅铝合金充分发挥实用价值的关键是细化初晶硅。
At higher overheating temperature, the shape of primary silicon becomes the star-shape and tree-shape.
随着熔体过热温度的升高， 凝固组织中初生硅形状由多边形向星形及树枝状转变。
The primary silicon particles precipitating from the solidification of Al-Si hypereutectic alloy was regarded as inclusions.
将铝硅过共晶合金凝固过程中析出的初生硅颗粒视为夹杂物颗粒。
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