Abstract This work investigates steels for mining wear applications involving abrasive and impact-abrasive conditions. The study comprises four low carbon steels with a range of hardness-toughness combinations: a commercial grade martensitic steel, the same steel heat treated to lower bainite, a commercial TRIP steel (tensile strength grade 700 MPa), and a quenching-partitioning (QP) steel. The steels were subjected to crushing pin-on-disc (CPOD) and slurry-pot wear tests, offering reasonably high-stress abrasive and impact-abrasive conditions, respectively. The results showed that the best performer in both studied wear conditions is the martensitic steel due to its higher initial hardness. Nevertheless, the performance benefit of this steel was of lesser magnitude in the slurry-pot than in the CPOD tests. On the other hand, the TRIP steel showed poor ranking in the CPOD tests but outperformed the QP and lower bainite steels in the slurry-pot tests. Detailed surface and subsurface wear damage investigations were conducted to study the wear responses of the microstructural constituents of the steels to explain their wear behavior in different wear conditions.

中文翻译：

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具有一系列硬度-韧性特性的低碳钢的冲击-磨料和磨料磨损行为

摘要 这项工作研究了用于涉及磨料和冲击磨料条件的采矿磨损应用的钢。该研究包括四种具有一系列硬度-韧性组合的低碳钢：一种商业级马氏体钢、相同的钢经过热处理降低贝氏体、一种商业 TRIP 钢（抗拉强度等级为 700 MPa）和淬火分区钢（QP ） 钢。这些钢分别进行了压碎销盘 (CPOD) 和浆料锅磨损试验，分别提供了合理的高应力磨料和冲击磨料条件。结果表明，在所研究的两种磨损条件下，表现最佳的是马氏体钢，因为它具有较高的初始硬度。尽管如此，这种钢在浆料罐中的性能优势比在 CPOD 测试中的要小。另一方面，TRIP 钢在 CPOD 试验中表现出较差的等级，但在浆罐试验中优于 QP 和下贝氏体钢。进行了详细的表面和亚表面磨损损伤研究，以研究钢的微观结构成分的磨损响应，以解释它们在不同磨损条件下的磨损行为。