Investigation of the Effectuation of Graphene Nanosheets (GNS) Addition on the Mechanical Properties and Microstructure of S390 HSS Using Powder Metallurgy Method

The effect of grapheme-nanosheets (GNs) on the mechanical properties and microstructure S390 HSS alloy was investigating. sample reinforced with 0.25, 0.5, 0.75 wt.% GNS. Powder metallurgy technique used to prepare all samples. elemental powders were milled in a planetary ball mill by 10:1 powder ratio speed 350 rpm for 48 hours, mixed warm compacted uni-axial press at 550?C under 500 MPa then sintered vacuum furnace 1370?C 1 hour. X-ray diffraction shows formation secondary carbide phases martensite. density result indicates decreasing values GNS additions. show an increase hardness wear resistance increasing graphene content. specimens are metallographically examining using Scanning Electron Microscopy (SEM), also electron backscatter good distribution matrix.