Al-Ti-B细化剂对ZL205A铝合金组织性能的影响

丁旭; 孟令刚; 姜立; 房灿峰; 周秉文; 亚斌; 赵丰; 张兴国

doi:10.15980/j.tzzz.2018.07.021

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Al-Ti-B细化剂对ZL205A铝合金组织性能的影响
Effects of Al-Ti-B Refiner on the Microstructure and Properties of ZL205A
2018年38卷第7期页码：772-775
纸质出版日期： 2018 ，
DOI： 10.15980/j.tzzz.2018.07.021

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[1]丁旭,孟令刚,姜立,房灿峰,周秉文,亚斌,赵丰,张兴国.Al-Ti-B细化剂对ZL205A铝合金组织性能的影响[J].特种铸造及有色合金,2018,38(07):772-775.

Ding Xu, Meng Linggang, Jiang Li, et al. Effects of Al-Ti-B Refiner on the Microstructure and Properties of ZL205A[J]. Special Casting & Nonferrous Alloys, 2018,38(7):772-775.
[1]丁旭,孟令刚,姜立,房灿峰,周秉文,亚斌,赵丰,张兴国.Al-Ti-B细化剂对ZL205A铝合金组织性能的影响[J].特种铸造及有色合金,2018,38(07):772-775. DOI： 10.15980/j.tzzz.2018.07.021.

Ding Xu, Meng Linggang, Jiang Li, et al. Effects of Al-Ti-B Refiner on the Microstructure and Properties of ZL205A[J]. Special Casting & Nonferrous Alloys, 2018,38(7):772-775. DOI： 10.15980/j.tzzz.2018.07.021.

摘要

研究了Al-5Ti-B细化剂的类型、加入量和精炼工艺对ZL205A合金组织性能的影响。结果表明

Al-5Ti-B细化剂中TiB2相聚集分布时

会诱发细化效果的不均匀性

细化剂中的粗大Al3Ti相会残留于合金基体中

降低合金的力学性能;Al-5Ti-B细化剂在Ti加入量为0.25%时

ZL205A合金的细化效果良好且力学性能最佳

屈服强度、抗拉强度与伸长率分别可达378 MPa、455 MPa和8.9%;采用C2Cl6精炼时

细化剂中的TiB2颗粒会发生"中毒"现象

加剧TiB

相的聚集。采用氩气精炼并控制静置时间可以保证TiB

相的稳定性。

Abstract

The influence of the type

addition of Al-5Ti-B refiner and refining process on the structure and mechanical properties of ZL205Aalloy was investigated by OM

SEM and tensile testing.When the TiB

phase in the Al-5Ti-B refiner is aggregated

the refinement effect can induce inhomogeneity.In addition

the coarse Al

Ti in the refiner will be resided in the alloy and greatly reduce the elongation.With Al-5Ti-B refiner of 0.25%

the refinement effect of ZL205Aalloy is desirable and the mechanical properties reach the satisfied values

where the yield strength

tensile strength and elongation reach 378MPa

455 MPa and 8.9%

respectively.With using C

purifying

the"toxic"reaction of Al-5Ti-B refiner can lead to the aggregation and deposition of TiB

particles.The stability of TiB

phase can be guaranteed by using Ar purifying and controlling the purifying time.

关键词

ZL205A铝合金Al-Ti-B细化剂精炼工艺显微组织力学性能

Keywords

ZL205A AlloyAl-Ti-B RefinerPurifying ProcessMicrostructureMechanical Properties

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