高能超声处理Al-1Si合金凝固组织分析

宁韶斌; 郄喜望; 赵建强; 李喜孟; 李廷举

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高能超声处理Al-1Si合金凝固组织分析
Effects of High Intensity Ultrasonic on the Solidification Structure of Al-1Si Alloy
2007年第4期页码：320-321
纸质出版日期： 2007 ，
DOI：

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[1]宁韶斌,郄喜望,赵建强,李喜孟,李廷举.高能超声处理Al-1Si合金凝固组织分析[J].特种铸造及有色合金,2007(04):320-321+246.

Ning Shaobin, Xi Xiwang, Zhao Jianqiang, et al. Effects of High Intensity Ultrasonic on the Solidification Structure of Al-1Si Alloy[J]. Special Casting & Nonferrous Alloys, 2007,(4):320-321.
[1]宁韶斌,郄喜望,赵建强,李喜孟,李廷举.高能超声处理Al-1Si合金凝固组织分析[J].特种铸造及有色合金,2007(04):320-321+246. DOI：

Ning Shaobin, Xi Xiwang, Zhao Jianqiang, et al. Effects of High Intensity Ultrasonic on the Solidification Structure of Al-1Si Alloy[J]. Special Casting & Nonferrous Alloys, 2007,(4):320-321. DOI：

摘要

采用高能超声处理Al-1Si合金熔体

借助金相显微镜和电子探针进行组织分析

并测定合金的熔化潜热

分析了熔体中超声空化效应和声流效应影响凝固过程的机理。结果表明

试样晶粒平均尺寸由超声处理前的94μm减小到超声处理后的34μm;合金试样的熔化吸热量由263.90J/g降低为159.81J/g

在熔体中施加高能超声显著改善了合金成分的均匀性并细化了晶粒。

Abstract

Effects of high intensity ultrasonic on solidification of Al-1Si alloy have been observed by optical microscope and EPMA

and the latent heat of fusion is measured by DSC. The influencing mechanism of ultrasonic cavitation and acoustic stream on solidification structure in the Al-1Si alloy has been approached. The results show that it is decreased by 34μm from 94 μm in average grain size of the alloy

and by 159.81J/g from 236.90J/g in the latent heat of fusion of the alloy after ultrasonic treatment

which reveals that the high intensity ultrasonic can remarkably improve the homogenization of the constituent and refine the grain size in the alloy.