The selection and use of high strength alloys with high wear resistance (at room and high temperature) are mandatory in aerospace, nuclear, automotive, petroleum, space, furnace, and chemical industries in which Incoloy 800H superalloy is the right choice. However, this alloy is under the class of ‘difficult to cut material’ caused by their significant properties. In the present work, the heat treatment on Incoloy 800H superalloy was carried out at 1075 °C for 60 min and then the samples were cooled in the air (air cooling, AC) and furnace (furnace cooling, FC) to modify the microstructure. The mechanical and tribological behavior were examined on the heat-treated samples at room temperature to eliminate the effect of dynamic strain aging (DSA) which usually occurs at elevated temperatures in superalloys. Hardness measurement and compression tests were carried out to examine the variation of strength. Further, the dry sliding wear tests at room temperature were performed to analyze wear resistance of heat-treated specimens and compared with the as-received (AR) sample. Besides, the wear mechanism and surface roughness of worn-out specimens were analyzed. The result indicates that the air-cooled (AC) sample possessed high hardness, high compression strength, and more resistance to wear as compared to AR and FC samples. The identified wear mechanisms in AR and FC samples were abrasive, deep grooves, plastic deformation while the AC specimen exhibits mild grooves and lesser debris particles. Fractography analysis was also performed to find the nature or mode of fractures on the samples. ANOVA result indicates that the sample hardness after heat treatment has the most influencing parameter followed by the applied load on the wear rate and the coefficient of friction (CoF). The measured average roughness of the AC specimen has shown lesser value than the AR and FC specimens due to refined grain structure.

在Incoloy 800H超级合金是正确的选择的航空航天，核能，汽车，石油，航天，熔炉和化学工业中，必须选择和使用具有高耐磨性（在室温和高温下）的高强度合金。但是，由于其显着的性能，该合金属于“难切削材料”类别。在本工作中，对Incoloy 800H高温合金在1075°C下进行了60分钟的热处理，然后将样品在空气中（空气冷却，AC）和炉子（炉冷却，FC）冷却，以改变组织。在室温下对热处理过的样品进行了力学和摩擦学检查，以消除动态应变时效（DSA）的影响，这种情况通常在高温下在高温下发生。进行硬度测量和压缩测试以检查强度的变化。此外，在室温下进行了干式滑动磨损测试，以分析热处理后的试样的耐磨性，并与原样（AR）进行比较。此外，还分析了磨损试样的磨损机理和表面粗糙度。结果表明，与AR和FC样品相比，风冷（AC）样品具有高硬度，高压缩强度和更高的耐磨性。在AR和FC样品中，已确定的磨损机理是磨料，深沟槽，塑性变形，而AC样品则表现出轻微的沟槽和较少的碎屑颗粒。还进行了断口扫描分析以发现样品上的裂缝的性质或模式。方差分析结果表明，热处理后的样品硬度具有最大的影响参数，其次是磨损率和摩擦系数（CoF）的施加载荷。由于细化的晶粒结构，AC样品的测量平均粗糙度显示出比AR和FC样品小的值。