Wear Behavior of Deep-Cryogenic Treated High-Speed Steels at Different Loads
Wear Behavior of Deep-Cryogenic Treated High-Speed Steels at Different Loads
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DOI：
10.1080/10426910600727924
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发表时间：
2006-12
影响因子：
4.8
通讯作者：
M. Kalin;V. Leskovšek;J. Vižintin
中科院分区：
文献类型：
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作者：
M. Kalin;V. Leskovšek;J. Vižintin
用于冷加工应用的工具通常由高速钢制成。然而，由于磨损和塑性变形，它们在一些应用中的性能是不够的，应该进一步改进。通过采用真空热处理与深冷处理（双重处理）的适当组合，可以大幅改变高速钢基体的显微组织，并改善和优化硬度和断裂韧性。在目前的工作中，我们已经研究了四个不同的真空和低温处理的ESR AISI M2高速钢回火温度的效果，所得到的组合的显微组织，硬度和韧性和它们的效果在不同的负载下的磨损机制。结果表明，在相对较高的载荷下，不同的处理导致耐磨性的数量级差异，而在低载荷下，所选择的处理是足够有效的，以保持在温和的磨损制度和样品之间的变化很小的磨损。然而，在使用的任何载荷或任何样品处理下均未发生整体磨损转变，尽管可以看到磨损机制的一些小差异，主要取决于样品的断裂韧性。
Tools for the cold-working applications are typically made from the high-speed steels. However, due to wear and plastic deformation their performance in several applications is not adequate and should be further improved. By using appropriate combination of vacuum heat-treatment in conjunction with a deep-cryogenic treatment (duplex treatment) the microstructure of high-speed steel matrix can be substantially changed and the hardness and fracture toughness can be modified and optimised. In the present work we have investigated the effect of four different tempering temperatures of vacuum and cryogenically treated ESR AISI M2 high-speed steel on the resulting combinations of microstructure, hardness and toughness and their effect on the wear mechanisms at different loads. The results showed that at relatively high loads the different treatments resulted in an order-of-magnitude difference of wear resistance, while at low loads the selected treatments were efficient enough to keep the wear within the mild wear regime and small variations between the samples. However, the overall wear transition did not occur at any load used or any sample treatment, although some small differences in wear mechanisms can be seen, primarily depending on the fracture toughness of the samples.