Low-temperature pressureless consolidation of AlSi10Mg powders by low-intensity ultrasound

IF 4.7 1区 材料科学 Q1 METALLURGY & METALLURGICAL ENGINEERING
Yu-ze LI , Long-fei ZHU , Xin WANG , Song TANG , Ting LUO , Jian-yuan WANG
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引用次数: 0

Abstract

Low-intensity ultrasound was applied to the pressureless consolidation of AlSi10Mg powders in a broad temperature range from 600 to 860 °C. Under static conditions, the consolidation of AlSi10Mg powders can only be achieved at 860 °C, but still with the presence of some residual unconsolidated regions. The introduction of low-intensity ultrasound at this temperature eliminates the unconsolidated regions and transforms the columnar grains observed in original directional solidification into equiaxed or globular grains. Remarkably, the application of low-intensity ultrasound significantly reduces the consolidation temperature to 620 °C, without compromising the microhardness of the resulting samples when compared to static conditions. Furthermore, by lowering the temperature to 600 °C, a well-sintered porous material is obtained through the assistance of the low-intensity ultrasound.
低强度超声对AlSi10Mg粉末低温无压固结的影响
在600 ~ 860℃的宽温度范围内,采用低强度超声对AlSi10Mg粉末进行无压固结。在静态条件下,AlSi10Mg粉末只有在860℃时才能实现固结,但仍然存在一些残余的未固结区域。在此温度下引入低强度超声消除了未固结区域,使原始定向凝固中观察到的柱状晶粒转变为等轴或球状晶粒。值得注意的是,与静态条件相比,低强度超声的应用显著降低了固结温度至620°C,而不影响所得样品的显微硬度。此外,通过降低温度至600°C,通过低强度超声的辅助,获得了烧结良好的多孔材料。
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来源期刊
CiteScore
7.40
自引率
17.80%
发文量
8456
审稿时长
3.6 months
期刊介绍: The Transactions of Nonferrous Metals Society of China (Trans. Nonferrous Met. Soc. China), founded in 1991 and sponsored by The Nonferrous Metals Society of China, is published monthly now and mainly contains reports of original research which reflect the new progresses in the field of nonferrous metals science and technology, including mineral processing, extraction metallurgy, metallic materials and heat treatments, metal working, physical metallurgy, powder metallurgy, with the emphasis on fundamental science. It is the unique preeminent publication in English for scientists, engineers, under/post-graduates on the field of nonferrous metals industry. This journal is covered by many famous abstract/index systems and databases such as SCI Expanded, Ei Compendex Plus, INSPEC, CA, METADEX, AJ and JICST.
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