Cu-P中间合金的快速凝固处理对Al-Si合金耐磨性的影响

Influence of Rapid Solidification of Cu-P Intermediate Alloy on Wear Resistance of Al-Si alloy

摘要:

研究了Cu-P中间合金的快速凝固处理对Al-Si合金耐磨性的影响.TEM分析表明:在冷却速度为105～106℃/s时,Cu-P中间合金薄带的组织由纳米晶和少量的非晶组织组成,而且Cu-P中间合金中的Cu3P的晶粒尺寸由5～40 μm下降到30～50 nm.结果表明,由于强度和硬度的提高,用薄带状中间合金改性处理的Al-Si合金的耐磨性要高于用块状中间合金改性处理的Al-Si合金:磨损率由0.86％下降到0.39％.因此,用熔体快淬Cu-P中间合金进行改性处理是提高Al-Si合金的耐磨性的有效办法.

关键词:熔体快淬;快速凝固;耐磨性;改性;melt-spin;rapid solidification;wear resistance;modification;中间合金;快速凝固处理;耐磨性;影响;alloy;Wear Resistance;Intermediate;Rapid Solidification;treatment;effective;improve;wear resistance;rate;better;massive;modified;grain size;microstructure;ribbon;little

Abstract:

Key words:melt-spin;rapid solidification;wear resistance;modification