不同比压下流变挤压铸造ZL111铝合金的性能与组织

陆文龙; 姜银方; 郑志文; 许善新

doi:10.15980/j.tzzz.2015.05.004

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不同比压下流变挤压铸造ZL111铝合金的性能与组织
Properties and Microstructure of Rheological Squeeze Casting Aluminum Alloy under Different Pressure
2015年35卷第5期页码：460-462
纸质出版日期： 2015 ，
DOI： 10.15980/j.tzzz.2015.05.004

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[1]陆文龙,姜银方,郑志文,许善新.不同比压下流变挤压铸造ZL111铝合金的性能与组织[J].特种铸造及有色合金,2015,35(05):460-462.

Lu Wenlong, Jiang Yinfang, Zheng Zhiwen, et al. Properties and Microstructure of Rheological Squeeze Casting Aluminum Alloy under Different Pressure[J]. Special Casting & Nonferrous Alloys, 2015,35(5):460-462.
[1]陆文龙,姜银方,郑志文,许善新.不同比压下流变挤压铸造ZL111铝合金的性能与组织[J].特种铸造及有色合金,2015,35(05):460-462. DOI： 10.15980/j.tzzz.2015.05.004.

Lu Wenlong, Jiang Yinfang, Zheng Zhiwen, et al. Properties and Microstructure of Rheological Squeeze Casting Aluminum Alloy under Different Pressure[J]. Special Casting & Nonferrous Alloys, 2015,35(5):460-462. DOI： 10.15980/j.tzzz.2015.05.004.

摘要

采用流变间接挤压铸造技术

研究了ZL111铝合金制动泵缸体的成形工艺。通过金相组织观察、拉伸试验、断口分析以及TEM分析等手段

研究了压射比压对铝合金制动泵缸体组织和性能的影响。结果表明

压射比压的增加

消除了铸件因补缩不足而产生的缩松;当压射比压由80MPa增加至95MPa

铸件的显微组织得到了细化

晶粒的平均尺寸由149μm减少至99μm

铸件的抗拉强度和伸长率分别达到了371 MPa和3.17%。

Abstract

ZL111 aluminum alloy brake pump cylinder was produced by rheological indirect squeeze casting.Influence of injection specific pressure on the quality of brake pump cylinder was analyzed by X-ray detection

metallographic analysis and tensile test

TEM.The results reveal that with the increase of the injection specific pressure

the shrinkage porosities in casting are eliminated.With the injection specific pressure increased from 80 MPa to 95 MPa

the average grain size is decreased from 149μm to 99μm

and tensile strength and elongation of castings reach 371 MPa and 3.17%

respectively.