Dziarski Piotr, Makuch Natalia
Institute of Materials Science and Engineering, Poznan University of Technology, 60-965 Poznan, Poland.
Materials (Basel). 2021 Nov 8;14(21):6727. doi: 10.3390/ma14216727.
The study investigated the dependence of the indentation load on nanomechanical properties for a gas-borided layer produced on Inconel 600-alloy. During the measurements, the indentation load range from 10 mN to 500 mN was used. Three types of tested areas, differing in the concentration of chromium, were examined. The increase in chromium concentration was accompanied by an increase in indentation hardness and Young's modulus. Simultaneously, the increase in the indentation load resulted in a decrease in the indentation hardness and Young's modulus, for each type of the tested area. The presence of the indentation size effect was analyzed using four models: Meyer's law, Hays and Kendall model, Li and Bradt model, Nix and Gao model. For all tested areas, good agreement with the Meyer's law was obtained. However, areas with a higher chromium concentration were more susceptible to indentation size effect (ISE). The proportional specimen resistance (PSR) model was used to describe the plastic-elastic behavior of the tested materials, as well as to detect the presence of ISE. It was found that the increase in chromium concentration in the tested area was accompanied by a greater tendency to elastic deformation during nanoindentation.
该研究调查了在因科镍合金600上制备的气体硼化层的压痕载荷对纳米力学性能的依赖性。在测量过程中，使用的压痕载荷范围为10 mN至500 mN。研究了三种铬浓度不同的测试区域。铬浓度的增加伴随着压痕硬度和杨氏模量的增加。同时，对于每种测试区域类型，压痕载荷的增加导致压痕硬度和杨氏模量的降低。使用四种模型分析了压痕尺寸效应的存在：迈耶定律、海斯和肯德尔模型、李和布拉德模型、尼克斯和高模型。对于所有测试区域，与迈耶定律都取得了良好的一致性。然而，铬浓度较高的区域更容易受到压痕尺寸效应（ISE）的影响。比例试样电阻（PSR）模型用于描述测试材料的弹塑性行为，以及检测ISE的存在。研究发现，测试区域中铬浓度的增加伴随着纳米压痕过程中更大的弹性变形趋势。
