Fe含量对选择性激光熔化Al-Cu-Ni-Ti-Fe合金组织和力学性能的影响

IF 3.9 2区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Vacuum Pub Date : 2025-09-13 DOI:10.1016/j.vacuum.2025.114746

Weidong Huang , Guanyu Chen , Xu Huang , Zhaobao Zeng , Yingjin Du , Shuaishuai Qin

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引用次数: 0

摘要

本文研究了Fe含量对选择性激光熔化Al-Cu-Ni合金显微组织和力学性能的影响。结果表明，当Fe含量从0.6 wt%增加到1.6 wt%时，晶粒尺寸从4.6 μm细化到2.7 μm，相形成行为发生改变；当Fe含量为0.6 wt% （Fe:Ni = 1:3）时，合金主要由Al7Cu4Ni相组成。而当Fe含量增加到1.6 wt% （Fe:Ni = 1:1）时，Al7Cu4Ni相的形成受到抑制，而Al9FeNi相和θ-Al2Cu相的形成得到促进。随着铁含量的增加，合金的抗拉强度由427 MPa提高到460.6 MPa。为增材制造高强度Al-Cu-Ni-Ti-Fe合金的成分设计和相调节提供参考。

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Effect of Fe content on the microstructure and mechanical properties of Al-Cu-Ni-Ti-Fe alloy fabricated by selective laser melting

In this work, the influence of Fe content on microstructure and mechanical properties of Al-Cu-Ni alloys fabricated by selective laser melting (SLM) was investigated. The results show that increasing the Fe content from 0.6 to 1.6 wt% refines the grain size from 4.6 μm to 2.7 μm and alters phase formation behavior. When Fe content is 0.6 wt% (Fe:Ni = 1:3), the as-built alloy primarily consists of the Al₇Cu₄Ni phase. However, when the Fe content increases to 1.6 wt% (Fe:Ni = 1:1), the formation of Al₇Cu₄Ni is suppressed, whereas the Al₉FeNi and θ-Al₂Cu phases are promoted. Furthermore, the increase in Fe content also enhances the tensile strength from 427 MPa to 460.6 MPa. This work provides a reference for the composition design and phase regulation of additive manufacturing high-strength Al-Cu-Ni-Ti-Fe alloys.

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来源期刊

Vacuum 工程技术-材料科学：综合

CiteScore

6.80

自引率

17.50%

发文量

审稿时长

34 days

期刊介绍： Vacuum is an international rapid publications journal with a focus on short communication. All papers are peer-reviewed, with the review process for short communication geared towards very fast turnaround times. The journal also published full research papers, thematic issues and selected papers from leading conferences. A report in Vacuum should represent a major advance in an area that involves a controlled environment at pressures of one atmosphere or below. The scope of the journal includes: 1. Vacuum; original developments in vacuum pumping and instrumentation, vacuum measurement, vacuum gas dynamics, gas-surface interactions, surface treatment for UHV applications and low outgassing, vacuum melting, sintering, and vacuum metrology. Technology and solutions for large-scale facilities (e.g., particle accelerators and fusion devices). New instrumentation ( e.g., detectors and electron microscopes). 2. Plasma science; advances in PVD, CVD, plasma-assisted CVD, ion sources, deposition processes and analysis. 3. Surface science; surface engineering, surface chemistry, surface analysis, crystal growth, ion-surface interactions and etching, nanometer-scale processing, surface modification. 4. Materials science; novel functional or structural materials. Metals, ceramics, and polymers. Experiments, simulations, and modelling for understanding structure-property relationships. Thin films and coatings. Nanostructures and ion implantation.