热处理和添加锌对 Al-Si-Cu-Mg-Cr-B 合金微观结构和性能的影响

IF 2.6 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Jiale Zheng, Xiaodong Du
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引用次数: 0

摘要

锌改性的低共晶铝-硅-铜-镁-铬-B 合金在 520 ℃ 溶液处理两小时和 550 ℃ 溶液处理半小时,然后在 100 ℃ 时效处理三小时和 180 ℃ 时效处理八小时。利用光学显微镜、X 射线衍射仪、扫描电子显微镜、能谱分析和力学性能测试,系统研究了热处理和锌添加对低共晶 Al-Si-Cu-Mg-Cr-B 合金共晶硅相、合金化合物和力学性能的影响。研究结果表明,热处理和锌的添加改善了共晶硅相和合金化合物的尺寸、形态、数量和类型,并提高了它们的力学性能。热处理后,添加 0.3 wt% Zn 的合金显示出最佳特性。合金的共晶硅相表现出最有利的形态、最丰富的合金化合物、最有利的形态和尺寸,以及最大的 Q 指数(用于评估合金的整体拉伸性能)。这表明合金具有优异的机械性能。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Effect of Heat Treatment and Zn Addition on Microstructure and Properties of Al–Si–Cu–Mg–Cr–B Alloy

Effect of Heat Treatment and Zn Addition on Microstructure and Properties of Al–Si–Cu–Mg–Cr–B Alloy

Zinc-modified hypoeutectic Al–Si–Cu–Mg–Cr–B alloy underwent a two-stage solution treatment at 520 °C for two hours and 550 °C for half an hour, followed by a two-stage aging treatment at 100 °C for three hours and 180 °C for eight hours. The impact of heat treatment and Zn addition on the eutectic Si phase, alloy compounds, and mechanical properties of the hypoeutectic Al–Si–Cu–Mg–Cr–B alloy was systematically investigated using an optical microscope, X-ray diffractometer, scanning electron microscope, energy spectrum analysis, and mechanical properties test. The findings revealed that heat treatment and Zn addition improved the size, morphology, quantity, and types of eutectic silicon phases and alloy compounds, as well as their mechanical properties. After heat treatment, the alloy displayed optimal characteristics with the addition of 0.3 wt% Zn. The eutectic Si phase of the alloy exhibited the most favorable morphology, the greatest variety of alloy compounds, the most favorable morphology and size, and the largest Q index, which is utilized to evaluate the overall tensile properties of the alloy. This indicates superior mechanical properties.

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来源期刊
International Journal of Metalcasting
International Journal of Metalcasting 工程技术-冶金工程
CiteScore
4.20
自引率
42.30%
发文量
174
审稿时长
>12 weeks
期刊介绍: The International Journal of Metalcasting is dedicated to leading the transfer of research and technology for the global metalcasting industry. The quarterly publication keeps the latest developments in metalcasting research and technology in front of the scientific leaders in our global industry throughout the year. All papers published in the the journal are approved after a rigorous peer review process. The editorial peer review board represents three international metalcasting groups: academia (metalcasting professors), science and research (personnel from national labs, research and scientific institutions), and industry (leading technical personnel from metalcasting facilities).
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