Ligier Krzysztof, Napiórkowski Jerzy, Lemecha Magdalena
Faculty of Technical Sciences, University of Warmia and Mazury in Olsztyn, Ul. M. Oczapowskiego 11, 10-719 Olsztyn, Poland.
Materials (Basel). 2024 Apr 29;17(9):2101. doi: 10.3390/ma17092101.
Martensitic low-alloy steels are widely used in machine construction. Due to their declared weldability, arc welding is most often used to join elements made of this type of steel. However, the high temperature associated with welding causes unfavourable changes in the microstructure, resulting in reduced abrasion resistance. Therefore, it is important to know the tribological properties of the welded joint. This article presents the results of a study on the abrasion wear resistance of a welded joint of an abrasion-resistant steel. This study tested a welded joint of an abrasive-resistant steel produced by the arc welding method. Wear testing of the welded joint was carried out under laboratory conditions by the ball-cratering method in the presence of abrasive slurry on the cross-section of the welded joint. Based on the test results, the change in the abrasive wear rate of the material as a function of the distance from the welded joint axis was determined. It was also found that the thermal processes accompanying welding caused structural changes that increased the wear rate index value. Adverse changes in the tribological properties of a welded material persist up to a distance of approx. 20 mm from the weld centre.
马氏体低合金钢广泛应用于机械制造。由于其宣称的可焊性，弧焊最常用于连接这种类型钢材制成的部件。然而，焊接相关的高温会导致微观结构发生不利变化，从而降低耐磨性。因此，了解焊接接头的摩擦学性能很重要。本文介绍了一项关于耐磨钢焊接接头耐磨性能的研究结果。该研究测试了通过弧焊方法生产的耐磨钢焊接接头。焊接接头的磨损测试在实验室条件下，通过在焊接接头横截面上存在磨料浆的球坑法进行。根据测试结果，确定了材料磨料磨损率随距焊接接头轴线距离的变化。还发现焊接伴随的热过程导致结构变化，增加了磨损率指数值。焊接材料摩擦学性能的不利变化一直持续到距焊缝中心约20毫米的距离。
