02745nam a2200253 a 4500 vtls000040759 KUKTEM 20251114204418.0 090723t2008 my a f m 001 0 eng|d THE0007409(Local) 201905151200 fawwaz 201107132243 VLOAD 200908141651 VLOAD 200908141632 VLOAD 200907231658 ida84 UMP TN672 .H39 2008 rs Bc. Mohd Hazwan Kamarudin Characterisation and modelling of static recovery process of plain carbon steel / Mohd Hazwan Kamarudin Characterisation and modelling of static recovery process of plain carbon steel [electronic resource] Kuantan, Pahang : UMP, 2008 55 p. : ill. (some col.) ; 30 cm. + 1 computer disc Project paper (Bachelor of Mechanical Engineering) -- Universiti Malaysia Pahang - 2008 This thesis is an investigation of static recovery process due to different pre – strain, temperature and time on recovery process. In this project, plain carbon steel specimens were subjected to tensile test and heat treatment process. The specimens were the tensile test specimen shape according ASTM E8. Box furnace was used in this project to perform the heat treatment of the specimens. The specimens were heated to a temperature which is below the recrystallization temperature with certain range of time. In this research, the recovery temperature was varied to 100oC, 200 oC, 300 oC and 400 oC. The pre – strain value was varied to 5%, 10%, 15% and 20% which is the value before the specimen break. The time was varied to 1 hour, 2 hours, 3 hours and 4 hours in order to analyze the static recovery process due to different time. The change of stress values were taken before and after static recovery for all variables to calculate the degree of recovery, Xrec by using Friedel’s model equation. The graphs were plotted to analyze the relationship between degree of recovery with these variables. The linear equations that obtained from each graph were compared with Friedel’s model equation in order to calculate the activation energy, Q. In this research, the activation energy for different temperature (1 hour fixed time, 10% pre - strain) was 118 kJ/mol and the value for different time (300oC fixed temperature, 5% pre - strain) was 162 kJ/mol. Finally, the activation energies that obtained were compared with other journal in order to validate the static recovery process of plain carbon steel by using Friedel’s method equation. Metals Heat treatment Annealing of metals 0 0 0 1 20000 20000 2019-09-04 0 TN672 .H39 2008 rs Bc. 0000038186 2019-09-04 00:00:00 1 2019-09-04 PSM 0 0 0 1 20000 20000 2019-09-04 0 CD 3446 | TN672 .H39 2008 rs Bc. 0000038187 2019-09-04 00:00:00 1 2019-09-04 PSM VIRTUA40 1602 1608 VTLSSORT0080*0200*0400*0900*1000*2450*2460*2600*3000*5020*5200*6500*6501*9992