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首页> 外文期刊>Journal of University of Science and Technology Beijing >Effect of P/M value on the preforms and microstructures of spray formed 70Si30Al alloy
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Effect of P/M value on the preforms and microstructures of spray formed 70Si30Al alloy

机译：P / M值对喷射成形70Si30Al合金预成型坯和组织的影响

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摘要

A novel 70Si30Al alloy was prepared by the spray forming process for electronic packaging materials. The effect of the ratio of atomization pressure to metal melt mass flux rate (P/M ) on the preforms and microstructures of the spray-deposited 70Si30Al alloy was studied. The results indicate that the P/M value has a considerable influence on the formation of the preforms and the optimal value is in the range of 0.209-0.231 MPa/(kg·min~(-1)). The microstructure of the spray formed 70Si30Al alloy is fine and homogenous. The primary silicon phases distributing in the aluminum matrix evenly are fine and irregular. The aluminum matrix is divided into two groups: supersaturated α-Al phase or α-Al phase and Al-Si pseudoeutectic phase or Al-Si eutectic phase.
机译：通过喷涂成型工艺制备了用于电子包装材料的新型70Si30Al合金。研究了雾化压力与金属熔体质量通量比（P / M）的比对喷射沉积70Si30Al合金的预成型坯和组织的影响。结果表明，P / M值对预成型坯的形成有很大影响，最佳值在0.209-0.231 MPa /（kg·min〜（-1））的范围内。喷射成形的70Si30Al合金的微观结构细而均匀。均匀分布在铝基体中的主要硅相细密且不规则。铝基体分为两类：过饱和的α-Al相或α-Al相和Al-Si假共晶相或Al-Si共晶相。

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