Al-Ti-C-B细化剂对A356铝合金组织和性能的影响

张将; 彭银江; 朱鸿磊; 洪晓露; 徐英; 刘永强; 陈大辉; 侯林冲

doi:10.15980/j.tzzz.2021.11.018

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Al-Ti-C-B细化剂对A356铝合金组织和性能的影响
Influence of Al-Ti-C-B Refiner on the Properties and Microstructure of A356 Alloy
2021年41卷第11期页码：1416-1419
纸质出版日期： 2021 ，
DOI： 10.15980/j.tzzz.2021.11.018

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张将, 彭银江, 朱鸿磊, 等. Al-Ti-C-B细化剂对A356铝合金组织和性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(11):1416-1419.

Zhang Jiang, Peng Yinjiang, Zhu Honglei, et al. Influence of Al-Ti-C-B Refiner on the Properties and Microstructure of A356 Alloy[J]. Special Casting & Nonferrous Alloys, 2021,41(11):1416-1419.
张将, 彭银江, 朱鸿磊, 等. Al-Ti-C-B细化剂对A356铝合金组织和性能的影响[J]. 特种铸造及有色合金杂志, 2021,41(11):1416-1419. DOI： 10.15980/j.tzzz.2021.11.018.

Zhang Jiang, Peng Yinjiang, Zhu Honglei, et al. Influence of Al-Ti-C-B Refiner on the Properties and Microstructure of A356 Alloy[J]. Special Casting & Nonferrous Alloys, 2021,41(11):1416-1419. DOI： 10.15980/j.tzzz.2021.11.018.

摘要

通过添加Al-Ti-C-B细化剂

研究了Ti、C、B元素对A356合金中α-Al相及力学性能的影响。结果表明

A356合金中加入Al-Ti-C-B能显著细化α-Al枝晶尺寸至150μm以下

微观组织更加均匀

且细化剂最佳添加量为1.0%(质量分数

下同)

合金的抗拉强度为320.8 MPa

伸长率为10.0%。进一步研究表明

Al-Ti-C-B中间合金中含有TCB粒子

能够作为初生α-Al的有效形核质点

从而对A356合金具有高效、长效、稳定的细化效果。

Abstract

The effects of Al-Ti-C-B master alloy on microstructure and mechanical properties of A356 alloy were investigated. The results indicate that the addition of AlTiCB to A356 alloy can significantly refine the α-Al dendrite

and the grain size can be refined to less than 150 μm. The microstructure becomes more uniform

and the desirable addition amount of trace element AlTiCB is 1.0%

where tensile strength and elongation of the alloy reaches the highest value of 320.8 MPa and 10.0%. The TCB particles existing in the Al-TCB seed alloy play a role of the effective nucleation particle of the primary α-Al

contributing to efficient

long-lasting and stable refining effect on A356 alloy.