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1. Is it true that the structure of hardened steel depends on the steel composition as well as the heat treatment process? 2. Explain why
1. Is it true that the structure of hardened steel depends on the steel composition as well as the heat treatment process?
2. Explain why the specimens of low carbon steel and high carbon steel, after being heated to 960C and then quenched from that temperature, have different harnesses. Indicate the differences in the microstructure of these steels after quenching.
3. Is cementite harder than pearlite? Give an explanation of your answer.
4. Based on the hardness data obtained, estimate the tensile strength of the various steels heat treated?
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