机械振动对AZ91D-3Ca镁合金凝固组织的影响

付浩; 周全; 谭水淋

doi:10.15980/j.tzzz.2013.06.032

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机械振动对AZ91D-3Ca镁合金凝固组织的影响
Influence of Mechanical Vibration on Solidification Structures of Ignition-Proof Magnesium Alloy AZ91D-3Ca
2013年33卷第6期页码：565-569
纸质出版日期： 2013 ，
DOI： 10.15980/j.tzzz.2013.06.032

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[1]付浩,周全,谭水淋.机械振动对AZ91D-3Ca镁合金凝固组织的影响[J].特种铸造及有色合金,2013,33(06):565-569.

Fu Hao, Zhou Quan, Tan Shuilin. Influence of Mechanical Vibration on Solidification Structures of Ignition-Proof Magnesium Alloy AZ91D-3Ca[J]. Special Casting & Nonferrous Alloys, 2013,33(6):565-569.
[1]付浩,周全,谭水淋.机械振动对AZ91D-3Ca镁合金凝固组织的影响[J].特种铸造及有色合金,2013,33(06):565-569. DOI： 10.15980/j.tzzz.2013.06.032.

Fu Hao, Zhou Quan, Tan Shuilin. Influence of Mechanical Vibration on Solidification Structures of Ignition-Proof Magnesium Alloy AZ91D-3Ca[J]. Special Casting & Nonferrous Alloys, 2013,33(6):565-569. DOI： 10.15980/j.tzzz.2013.06.032.

摘要

以振幅、频率、浇注温度和铸型预热温度为研究因素

对AZ91D-3Ca阻燃镁合金施加机械振动进行了研究。研究表明

通过控制机械振动参数与凝固条件可以细化AZ91D-3Ca阻燃镁合金的凝固组织;当振幅在0～1.7mm范围内

随着振幅的增大

合金的初生晶粒逐渐细化。当频率为1Hz时

合金凝固组织已经出现细化;在50～100Hz范围内

振动频率的增加对凝固组织细化效果的影响不明显。振动条件下

当浇注温度在610～700℃范围内和铸型预热温度在室温～600℃范围内

随着浇注温度或铸型预热温度的增加

合金初生晶粒逐渐粗化。

Abstract

Effects of mechanical vibration parameters

such as amplitude

frequency

pouring temperature and preheating temperature of mold

on solidification structure of ignition-proof magnesium alloy AZ91D-3Ca were investigated. The results show that solidification structures of ignition-proof magnesium alloy AZ91D-3Ca can be refined by controlling mechanical vibration parameters and solidification conditions. Primary grain in the alloy is refined gradually with the increase of amplitude within 0～1.7 mm. When frequency is 1Hz

refinement effect of primary grain appears. With frequency in range of 50～100 Hz

change of microstructure refinement can be ignored. With the increase of pouring temperature （610～700 ℃）or preheating temperature of the mold （room temperature to 600 ℃）

primary grain of the alloy is coarsened gradually by mechanical vibration.