作者: Klas Jonsson Wildner
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摘要: The report aims to investigate the influence of chemical reactions on comb crack formation and propagation in coated cemented carbide milling inserts with different compositions. A series novel experimental techniques have been developed applied understand oxidation corrosion effects cracks. Furthermore microstructure changes region cracks worn were studied by high resolution microscopy. It has observed that main effect is connected an attack binder phase, affecting its composition, distribution morphology. Different types for dry wet observed. In presence cooling media (wet machining) present lateral (fatigue induced) principal crack, which form at regions where strongly corroded. Despite addition Cr (Ta,Nb)C enhance both resistance a minor Schematic models based results scientific discussions are presented