Kirkovska Ivana, Homolová Viera, Petryshynets Ivan, Csanádi Tamás
Institute of Materials Research, Slovak Academy of Sciences, Watsonova 47, 040 01 Kosice, Slovakia.
Faculty of Materials, Metallurgy and Recycling, Technical University of Košice, Letná 9, 042 00 Košice, Slovakia.
Materials (Basel). 2020 Sep 18;13(18):4155. doi: 10.3390/ma13184155.
In this study, the influence of alloying elements on the mechanical properties of iron borides FeB and FeB formed in Fe-B-X (X = C, Cr, Mn, V, W, Mn + V) alloys were evaluated using instrumented indentation measurement. The microstructural characterization of the alloys was performed by means of X-ray diffraction and scanning electron microscope equipped with an energy dispersive X-ray analyzer. The fraction of the phases present in the alloys was determined either by the lever rule or by image analysis. The hardest and stiffest FeB formed in Fe-B-X (X = C, Cr, Mn) alloys was observed in the Fe-B-Cr alloys, where indentation hardness of H = 26.9 ± 1.4 GPa and indentation modulus of E = 486 ± 22 GPa were determined. The highest hardness of FeB was determined in the presence of tungsten as an alloying element, H = 20.8 ± 0.9 GPa. The lowest indentation hardness is measured in manganese alloyed FeB and FeB. In both FeB and FeB, an indentation size effect was observed, showing a decrease of hardness with increasing indentation depth.
在本研究中,使用仪器化压痕测量法评估了合金元素对Fe-B-X(X = C、Cr、Mn、V、W、Mn + V)合金中形成的硼化铁FeB和Fe₂B力学性能的影响。通过X射线衍射以及配备能量色散X射线分析仪的扫描电子显微镜对合金进行微观结构表征。合金中各相的比例通过杠杆法则或图像分析来确定。在Fe-B-X(X = C、Cr、Mn)合金中形成的最硬且最具刚性的FeB在Fe-B-Cr合金中观察到,其压痕硬度H = 26.9±1.4 GPa,压痕模量E = 486±22 GPa。在存在钨作为合金元素的情况下,Fe₂B的硬度最高,H = 20.8±0.9 GPa。在锰合金化的FeB和Fe₂B中测得最低的压痕硬度。在FeB和Fe₂B中均观察到压痕尺寸效应,即硬度随压痕深度增加而降低。