02712nmm a2200301 a 4500 vtls000098462 KUKTEM 20251117113333.0 161214s2016 my fq d 001 0 eng d THE0005125(Local) 201905131526 hanafiah 201612141247 saini UMP FKP .H34 2016 r Bc. CD 10456 Hafizuddin Mohamad Shafiee Hardness and flexural properties of heat treated SKD61 medium carbon steel [electronic resource] / Hafizuddin Mohamad Shafiee Kuantan, Pahang : UMP, 2016 1 computer disc : digital data ; 12 cm. Faculty of Manufacturing Engineering Theses Gred A Project Paper (Bachelor of Engineering in Manufacturing Engineering (Hons.)) -- Universiti Malaysia Pahang – 2016 Nowadays, medium carbon steel is widely used in engineering industry because of their balance properties. To change the mechanical properties of medium carbon steel, it needs to undergo heat treatment process. Heat treatment process is a combination of controlled heating and cooling a metal or alloy to achieve desired physical and mechanical properties. In order to modify the microstructure and desired mechanical properties, there are commonly heat treatments that often been used (annealing, normalizing, hardening and tempering). For this study, the samples are divided into two parts which are untreated and heat treated. For heat treated, the specimens were heating at 900 oC with soaking time 90 minutes and the cooled in different cooling medium which are quenched in water, inside the furnace and air. Then, the hardened specimens were tempered at two different temperatures. Rockwell Hardness test and flexural test are performed to investigate the hardness and flexural properties of the specimens and fractured surface of the specimens is observe using Field Emission Scanning Electron Microscope (FESEM). The result found that the hardness and flexural properties of the specimen is higher when the specimen is quenched in water compare with others cooling medium. Besides that, the hardened steel shows brittle fractured surface which consist of transgranular cleavage. Fractured surface for untreated, annealed and tempered 500⁰C specimen shows ductile failure mode with more plasticity deformation occurred. Item in PDF format Faculty of Manufacturing Engineering Dissertations Universities and Colleges Dissertations Theses 0 0 0 1 20000 20000 2019-09-04 0 FKP .H34 2016 r Bc. | CD 10456 0000115971 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 6961 6967 VTLSSORT0080*0200*0400*0900*0901*1000*2450*2600*3000*5000*5001*5020*5200*5380*6100*6500*6501*9992