Cryogenic heat treatment is an innovative heat treatment applied to improve the mechanical properties of sintered carbide cutting tools. In this study, the effect of cryogenic heat treatment used at different temperatures and soaking periods on the mechanical properties of carbide cutting tools was investigated. Cryogenic heat treatment was applied at two different temperatures, −145 °C and − 196 °C, for 24 and 36 h soaking periods. The microstructure of the cryogenic heat-treated cutting tool was investigated as microhardness and grain size. As a result of microstructure analysis, heat treatment soaking period was found to be more effective than heat treatment temperature. Milling tests of the Inconel 718 superalloy were performed under dry conditions using cryogenic heat-treated cutting tools and non-heat treated tools. The effect of heat treatment on cutting tool performance was studied in terms of the amount of tool wear, cutting force, surface roughness values. According to the results obtained, the cryogenic heat treatment applied to the cutting tools has a positive effect on cutting performance. In addition, in the examinations carried out on worn cutting tools, effective wear mechanisms were found to be oxidation, adhesion and abrasion.

低温热处理是一种创新的热处理，可用于改善烧结硬质合金切削刀具的机械性能。在这项研究中，研究了在不同温度和浸泡时间下进行的低温热处理对硬质合金刀具力学性能的影响。在-145°C和-196°C这两个不同的温度下进行了低温热处理，浸泡时间分别为24和36 h。研究了低温热处理切削刀具的显微组织，包括显微硬度和晶粒尺寸。作为显微组织分析的结果，发现热处理均热期比热处理温度更有效。Inconel 718高温合金的铣削测试是在干燥条件下使用低温热处理的切削工具和未经热处理的工具进行的。从刀具磨损量，切削力，表面粗糙度值等方面研究了热处理对切削刀具性能的影响。根据获得的结果，应用于切削工具的低温热处理会对切削性能产生积极影响。另外，在对磨损的切削工具进行的检查中，发现有效的磨损机理是氧化，粘附和磨损。