Relationship Between Mechanical Properties and Porosity in ADC12 Die Castings

Wang Fang; Zhao Haidong; Zhang Kewu; Li Yuanyuan

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Relationship Between Mechanical Properties and Porosity in ADC12 Die Castings
Issue 3, Pages: 204-207(2008)
Published： 2008 ，
DOI：

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[1]王芳,赵海东,张克武,李元元.ADC12压铸件孔洞与力学性能关系的研究[J].特种铸造及有色合金,2008(03):204-207+161-162.

Wang Fang, Zhao Haidong, Zhang Kewu, et al. Relationship Between Mechanical Properties and Porosity in ADC12 Die Castings. [J]. Special Casting & Nonferrous Alloys (3):204-207(2008)
[1]王芳,赵海东,张克武,李元元.ADC12压铸件孔洞与力学性能关系的研究[J].特种铸造及有色合金,2008(03):204-207+161-162. DOI：

Wang Fang, Zhao Haidong, Zhang Kewu, et al. Relationship Between Mechanical Properties and Porosity in ADC12 Die Castings. [J]. Special Casting & Nonferrous Alloys (3):204-207(2008) DOI：

摘要

针对压铸过程中气体卷入形成的孔洞与压铸件力学性能之间的定量关系进行了研究。进行了不同压射速度下ADC12平板压铸件的试验

在压铸件的不同部位取样

测试了所取试样的力学性能

采用阿基米德方法和图像定量系统

分别测量了取样的孔洞体积分数和最大尺寸

探讨了它们和力学性能之间的关系。并利用多元线性回归的数学统计方法

提出了ADC12压铸件中孔洞（体积分数、最大尺寸）与力学性能（抗拉强度、伸长率）的定量关系与关系图。研究表明

在ADC12压铸生产中

必须将孔洞体积分数和最大尺寸分别控制在4.3%和180μm以下

才能得到力学性能合格的压铸件。

Abstract

The quantitative relationship between porosity caused by en-trapped gas and mechanical properties of ADC12 alloy has been calculated.The ADC12 plate castings were produced with different injection velocity.The mechanical properties of the samples cut from different position in the plate castings were tested.The volumetric fractions and maximum size of porosities induced by entrapped gas were quantitatively measured by the Arkimeters and image quantitative system to understand the effects on the mechanical properties of the castings.The quantitative relationship between mechanical properties including tensile strength and elongation and porosity fraction as well as maximum size of ADC12 die castings was proposed by the multivarient linear regression method.It was found that the fraction and maximum size of porosities should be controlled less than 4.3% and 180μm in the ADC12 die castings

respectively.