Ren Yuxin, Zhang Zhaolu, He Guangyu, Zhang Yanli, Zhang Zilei
National Key Lab of Aerospace Power System and Plasma Technology, Xi'an Jiaotong University, Xi'an 710049, China.
State Key Laboratory for Mechanical Behavior of Materials, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an 710049, China.
Materials (Basel). 2024 Aug 6;17(16):3890. doi: 10.3390/ma17163890.
This paper addresses the challenge of ranking the factors that affect the erosion resistance of lightweight alloys, with a specific focus on aluminum alloys. A three-factor, four-level orthogonal experimental design was employed to examine the influence of various sand particle sizes, erosion speeds, and sand concentrations on the abrasion qualities of these alloys. Parameters such as mass loss, depth, residual stresses, and failure mechanisms were assessed to determine erosion performance. Analysis of variance (ANOVA) and regression analysis of the three key factors were performed. Our findings resulted in an erosion rate formula: erosion rate = 0.679 sand particle size +0.067 sand concentration -0.002 erosion velocity +0.285. Our findings indicate that particle size is the most significant factor affecting erosion rate, with sand concentration and erosion velocity being secondary factors. The failure mechanism reveals that larger sand particles tend to produce deeper slides, and higher sand concentrations result in an increased number of slides. A lower concentration leads to the appearance of erosion pits. And the test conditions of high concentration and low velocity lead to more serious brittle fractures of the substrate, often accompanied by the appearance of cracks.
本文探讨了对影响轻质合金抗侵蚀性的因素进行排序的挑战，特别关注铝合金。采用三因素四水平正交试验设计，研究了不同砂粒尺寸、侵蚀速度和砂浓度对这些合金磨损质量的影响。评估了质量损失、深度、残余应力和失效机制等参数，以确定侵蚀性能。对三个关键因素进行了方差分析（ANOVA）和回归分析。我们的研究结果得出了一个侵蚀速率公式：侵蚀速率 = 0.679×砂粒尺寸 + 0.067×砂浓度 - 0.002×侵蚀速度 + 0.285。我们的研究结果表明，颗粒尺寸是影响侵蚀速率的最显著因素，砂浓度和侵蚀速度是次要因素。失效机制表明，较大的砂粒往往会产生更深的划痕，较高的砂浓度会导致划痕数量增加。较低的浓度会导致侵蚀坑的出现。高浓度和低速度的试验条件会导致基体更严重的脆性断裂，常常伴随着裂纹的出现。
