Ag-Induced Synergistic Enhancement of mechanical and shape memory characteristics in Cu-Al-Ni alloys

IF 2.7 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Letters Pub Date : 2025-05-01 DOI:10.1016/j.matlet.2025.138679

Jinjin Zhang , Chi Zhang , Mingyong Jia , Guanchao Yin , Fei Chen

引用次数: 0

Abstract

This study investigates the microstructure, mechanical properties, and shape memory behavior of a series of (84-x) Cu-12Al-4Ni-xAg (x = 0, 4, 8, 12 wt%) alloys with varying Ag contents. The alloys predominantly exhibited martensitic phases: 18R and 2H, with the 18R phase becoming more prevalent as Ag was introduced. The formation of the Ag₂Al phase and microstructural refinement contributed to significant improvements in mechanical properties. Notably, the alloy with 8 wt% Ag (x = 8) exhibited peak compressive strength of 947.1 MPa, the compressive strain of 14.1 %. Additionally, the inclusion of Ag enhanced the shape memory effect of the alloys, with the x = 8 alloy demonstrating a reversible strain of 4.7 % upon heating after an 8 % pre-strain.

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ag诱导Cu-Al-Ni合金力学和形状记忆特性的协同增强

研究了不同Ag含量的（84-x） Cu-12Al-4Ni-xAg （x = 0,4,8,12 wt%）合金的显微组织、力学性能和形状记忆行为。合金主要表现为马氏体相：18R和2H，随着Ag的引入，18R相变得更加普遍。Ag2Al相的形成和显微组织的细化使合金的力学性能得到显著改善。当Ag含量为8 wt% （x = 8）时，合金的峰值抗压强度为947.1 MPa，压缩应变为14.1%。此外，Ag的加入增强了合金的形状记忆效应，在预应变为8%后，x = 8合金在加热时显示出4.7%的可逆应变。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Materials Letters 工程技术-材料科学：综合

CiteScore

5.60

自引率

3.30%

发文量

1948

审稿时长

50 days

期刊介绍： Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials. Contributions include, but are not limited to, a variety of topics such as: • Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors • Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart • Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction • Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots. • Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing. • Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic • Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive