Tupaj Mirosław, Orłowicz Antoni Władysław, Mróz Marek, Trytek Andrzej, Dolata Anna Janina, Dziedzic Andrzej
Faculty of Mechanics and Technology, Rzeszow University of Technology, ul. Kwiatkowskiego, 37-450 Stalowa Wola, Poland.
Faculty of Mechanical Engineering and Aeronautics, Rzeszow University of Technology, al. Powstańców 8, 35-959 Rzeszów, Poland.
Materials (Basel). 2020 Dec 9;13(24):5612. doi: 10.3390/ma13245612.
The paper concerns modeling the microstructure of a hypereutectic aluminum-silicon alloy developed by the authors with the purpose of application for automobile cylinder liners showing high resistance to abrasive wear at least equal to that of cast-iron liners. With the use of the nanoindentation method, material properties of intermetallic phases and matrix in a hypereutectic Al-Si alloy containing Mn, Cu, Cr, Ni, V, Fe, and Mg as additives were examined. The scanning electron microscope equipped with an adapter for chemical composition microanalysis was used to determine the chemical composition of intermetallics and of the alloy matrix. Intermetallic phases, such as Al(Fe,Mn,)Si, Al(Cr,V,)Si, AlFeSi, AlFeNi, AlCuNi, AlCu, and MgSi, including those supersaturated with various alloying elements (), were identified based on results of X-ray diffraction (XRD) tests and microanalysis of chemical composition carried out with the use of X-ray energy dispersive spectroscopy (EDS). Shapes of the phases included regular, irregular, or elongated polygons. On the disclosed intermetallic phases, silicon precipitations, the matrix, values of the indentation hardness (), and the indentation modulus () were determined by performing nanoindentation tests with the use of a Nanoindentation Tester NHT (CSM Instruments) equipped with a Berkovich B-L 32 diamond indenter. The adopted maximum load value was 20 mN.
本文涉及对作者开发的过共晶铝硅合金的微观结构进行建模,目的是将其应用于汽车气缸套,使其具有至少与铸铁缸套相当的高抗磨性。通过纳米压痕法,研究了含有锰、铜、铬、镍、钒、铁和镁作为添加剂的过共晶铝硅合金中金属间相和基体的材料性能。使用配备化学成分微分析适配器的扫描电子显微镜来确定金属间化合物和合金基体的化学成分。基于X射线衍射(XRD)测试结果和使用X射线能量色散光谱(EDS)进行的化学成分微分析,鉴定出了金属间相,如Al(Fe,Mn,)Si、Al(Cr,V,)Si、AlFeSi、AlFeNi、AlCuNi、AlCu和MgSi,包括那些被各种合金元素()过饱和的相。这些相的形状包括规则的、不规则的或细长的多边形。在公开的金属间相上,通过使用配备Berkovich B-L 32金刚石压头的Nanoindentation Tester NHT(CSM Instruments)进行纳米压痕测试,确定了硅析出物、基体、压痕硬度()值和压痕模量()。采用的最大载荷值为20 mN。