Relationship between Mechanical Properties and Amount of Primary α-Al Phase in the Al-Si Alloys

Yao Lijuan; Nan Ruihua; Zhu Man

doi:10.15980/j.tzzz.2017.08.001

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Relationship between Mechanical Properties and Amount of Primary α-Al Phase in the Al-Si Alloys
Vol. 37, Issue 8, Pages: 813-815(2017)
Published： 2017 ，
DOI： 10.15980/j.tzzz.2017.08.001

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[1]姚丽娟,南瑞华,朱满.Al-Si合金力学性能与初生α-Al相数量的相关性研究[J].特种铸造及有色合金,2017,37(08):813-815.

Yao Lijuan, Nan Ruihua, Zhu Man. Relationship between Mechanical Properties and Amount of Primary α-Al Phase in the Al-Si Alloys. [J]. Special Casting & Nonferrous Alloys 37(8):813-815(2017)
[1]姚丽娟,南瑞华,朱满.Al-Si合金力学性能与初生α-Al相数量的相关性研究[J].特种铸造及有色合金,2017,37(08):813-815. DOI： 10.15980/j.tzzz.2017.08.001.

Yao Lijuan, Nan Ruihua, Zhu Man. Relationship between Mechanical Properties and Amount of Primary α-Al Phase in the Al-Si Alloys. [J]. Special Casting & Nonferrous Alloys 37(8):813-815(2017) DOI： 10.15980/j.tzzz.2017.08.001.

摘要

采用图像分析仪对细化前后铸态A356铝合金组织中的初生α-Al枝晶数量进行定量分析

建立了A356铝合金的力学性能与初生α-Al相数量之间的关系。结果表明

当Al-5Ti-1B添加量大于0.5%时

组织内形成细小的等轴晶。α-Al枝晶的数量随着细化剂添加量的增加而增加。线性拟合结果揭示了抗拉强度、伸长率、质量参数和初生α-Al数量之间的关系。

Abstract

Image analyzer was used to measure quantitatively the amount of primaryα-Al dendrites in the as-cast A356 aluminium alloys grain refined by different Ti-B content.The correlation between mechanical properties and amount of primaryα-Al dendrites in the refined alloys was established.The results reveal that fine equiaxed dendrites can be completely formed when the addition of Al-5Ti-1Brefiner is larger than 0.5%.The amount of primaryα-Al dendrites is increased with the addition of Ti-B content increase.The regression equations reveal a linear relationship between ultimate tensile strength

elongation

quality index and amount of primaryα-Al dendrites.