Effects of Three-Dimensional Vibration Parameters on Microstructures of Semi-Solid Al-9Si-Mg Alloy

Tan Jianbo; Li Zengmin; Li Lixin

doi:10.15980/j.tzzz.2013.11.023

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Effects of Three-Dimensional Vibration Parameters on Microstructures of Semi-Solid Al-9Si-Mg Alloy
Vol. 33, Issue 11, Pages: 1013-1016(2013)
Published： 2013 ，
DOI： 10.15980/j.tzzz.2013.11.023

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[1]谭建波,李增民,李立新.三维振动对半固态Al-9Si-Mg组织的影响[J].特种铸造及有色合金,2013,33(11):1013-1016.

Tan Jianbo, Li Zengmin, Li Lixin. Effects of Three-Dimensional Vibration Parameters on Microstructures of Semi-Solid Al-9Si-Mg Alloy. [J]. Special Casting & Nonferrous Alloys 33(11):1013-1016(2013)
[1]谭建波,李增民,李立新.三维振动对半固态Al-9Si-Mg组织的影响[J].特种铸造及有色合金,2013,33(11):1013-1016. DOI： 10.15980/j.tzzz.2013.11.023.

Tan Jianbo, Li Zengmin, Li Lixin. Effects of Three-Dimensional Vibration Parameters on Microstructures of Semi-Solid Al-9Si-Mg Alloy. [J]. Special Casting & Nonferrous Alloys 33(11):1013-1016(2013) DOI： 10.15980/j.tzzz.2013.11.023.

摘要

将三维振动技术应用于半固态合金制备中。在自制的倾斜冷却装置内安放扰流柱

制备半固态Al-9Si-Mg合金水淬试样

用定量分析技术分析试样组织

研究了Z方向振动、YZ方向振动和XYZ方向振动时

振动频率对半固态Al-9Si-Mg合金组织的影响。结果表明

在Z、YZ和XYZ方向振动时

随着振动频率的增加

晶粒尺寸逐渐减小

晶粒形状趋于圆整;在振动频率为30Hz时

无论是在Z、YZ和XYZ方向振动时

微观组织中都存在少量枝晶

随着振动频率的增加

枝晶消失;XYZ方向同时振动、振动频率为50Hz时

得到的组织晶粒最细小

其晶粒尺寸为6.58μm

形状因子为0.59。

Abstract

The three-dimensional vibration technology used for making semi-solid alloy slurry was presented.Influences of vibration frequency in Z

XYand XYZdirection on the structures of water quenched Al-9Si-Mg alloy specimen were investigated by quantitative analytic technique through the disturbing pillars installed in a self-designed sloping board.The results indicate that at the Z

XYand XYZvibration direction

with the increase of the vibration frequency

the grain size is decreased gradually with the spheroidization of the grain shape.When the vibration frequency is 30Hz

there exists a small amount of dendrite in microstructure regardless of Z

XYand XYZvibration direction

and with the increase of vibration frequency

the dendrite disappears gradually.With the vibration directions of XYZand the frequency of 50Hz

a fine grain structure can be observed

in which the grain size reaches 6.58μm with0.59of shape factor.