非金属夹杂物特性对钢铁材料疲劳性能影响的研究进展

Research progress in influence of non-metallicinclusion characteristics on fatigue propertiesof iron and steel materials

本文综述了非金属夹杂物对钢铁材料疲劳性能的影响及研究现状,从夹杂物的角度出发,首先介绍非金属夹杂物特征提取的最新研究进展,分别从实验测量方法和数学公式科学统计方法两方面进行论述;其次根据夹杂物对于疲劳损伤的主要原理,介绍5种应用较为广泛的定量化分析夹杂物特征参数与钢材疲劳性能的数学模型;然后以夹杂物的形貌特征、力学性能以及与基体之间的相互作用为出发点,探究非金属夹杂物的特性对重载零件钢材疲劳性能的影响。最后指出从多角度解析非金属夹杂物对钢材疲劳性能的主要作用机理,构建非金属夹杂物对钢材疲劳寿命预测模型是未来该领域的研究重点。

The effects of non-metallic inclusions on the fatigue properties of iron and steel materials and their research status were reviewed.From the perspective of inclusions,the latest research progress on the extraction of non-metallic inclusions was first introduced from the experimental measurement methods and mathematical formulas.Secondly,according to the main principles of inclusions for fatigue damage,five kinds of widely used quantitative analysis of inclusion parameters and math-ematical model of steel fatigue performance were introduced.Then the influence of the characteristics of non-metallic inclusions on the fatigue properties of heavy-duty steel parts was investigated by taking the morphology,mechanical properties and the interaction between the inclusions and the matrix as the starting point.Finally,it was pointed out that the focus of future research in this field is to analyze the main action mechanism of non-metallic inclusions on steel fatigue properties from multiple perspectives and to build a prediction model of non-metallic inclusions on steel fatigue life.