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Notched Bar Testing
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adjusted age-hardening alloy aluminium annealed Appendix atoms austenite austenite grain bainite ball brittle carbon content carbon steel cementite cent circuit coefficient coil cold junction composition Constantan copper courtesy cross-sectional area crucible crystal decarburization decreases deflection deformation depends determine diam diameter diffusion dilatometer dislocations effect electrical resistance element equation equilibrium eutectic eutectoid examine the microstructure experiment extensometer ferrite freezing furnace galvanometer gauge length given hardening heat treatment Hounsfield increase indentation iron kg load liquid load-extension curve lower martensite measured metal method microscope mild steel obtained oxidation pearlite phase diagram plastic Plot potentiometer precipitate proof stress pyrometers quenching radiation range rate of cooling rate of heating resistance Rockwell hardness numbers room temperature samples scale shown in Figure silica solid solution solidus solubility specimen suitable surface switch Table tempering tensile test test piece thermal thermocouple thickness transformation temperature tube varies wire work-hardening yield point