Discussion on the Mechanism of Creating a Transferred Layer of SiC Shot Particles on Aluminum Alloy by FPP Treatment
Discussion on the Mechanism of Creating a Transferred Layer of SiC Shot Particles on Aluminum Alloy by FPP Treatment
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FPP处理在铝合金上形成SiC丸粒转移层机理的探讨
DOI：
10.2472/jsms.60.655
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
J. Komotori
中科院分区：
文献类型：
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作者：
Y. Amano;Y. Kameyama;Hiroshi Nanbu;J. Komotori
为了阐明细颗粒喷丸（FPP）技术在铝合金表面形成颗粒转移层的机理，在室温、100 ℃、200 ℃和300 ℃条件下，采用SiC颗粒对铝合金表面进行表面改性处理。使用场发射扫描电子显微镜（FE-SEM）、能量色散X射线光谱仪（EDX）和X射线光电子能谱仪（XPS）对处理后的表面进行表征。通过FPP处理，在衬底表面上形成了其中嵌入有小碎片的弹丸颗粒的富含SiC的层。EDX和XPS分析表明，转移的片段仅嵌入处理过的材料中，没有任何化学结合。随着加热温度的升高，富SiC层逐渐增厚，在300 ℃处理的试样上，富SiC层变得均匀。分析了FPP处理引起部分弹丸颗粒粘附的机理。使用EDX的分析揭示了转移到碰撞凹痕的颗粒碎片的存在。随着碰撞量的增加，由于微犁削效应，转移的碎片被变形的材料嵌入处理过的材料中。此外，使用高速摄像机的分析表明，在FPP处理过程中发生了发射粒子的碰撞。
In order to clarify the mechanism of creating a transferred layer of shot particles on the substrate surface by Fine Particle Peening (FPP), the surface of aluminum alloy was modified with SiC shot particles at room temperature, 100 ℃ , 200 ℃ and 300 ℃ . The treated surfaces were characterized using a field emission - scanning electron microscope (FE-SEM), an energy dispersive X-ray spectrometer (EDX) and an X-ray photoelectron spectroscope (XPS). An SiC-rich layer in which small chips of shot particles were embedded was formed on the substrate surface by FPP treatment. EDX and XPS analyses revealed that the transferred fragments were only embedded into treated material without any chemical binding. The SiC-rich layer became thicker with an increase in heating temperature and was uniformized on the specimen treated at 300 ℃ . The mechanism of the adhesion of a part of the shot particles induced by FPP treatment was analyzed. Analyses using EDX revealed the presence of particle fragments transferred to the collision dents. With an increase in the amount of collision, transferred fragments were embedded into treated material by deformed material due to a micro ploughing effect. In addition, analyses using a high-speed camera revealed that collision of shot particles occurred during FPP treatment.
位错密度和超晶粒细化对铁严重变形的限制
DOI：
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发表时间：
2003
期刊：
Materials Science Forum 426-432
影响因子：
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作者：
S.Takaki
通讯作者：
S.Takaki