2034hw10 - MSE2034 HW#10 (STALEY) Due Thursday April 15 Max...

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MSE2034 HW#10 (STALEY) Due Thursday April 15 Max Score = 10/10 [2 points each] 1) The isothermal TTT diagram for 1.13% plain carbon steel [AISI-SAE designation=10110] is given in Fig 10.39. Using this figure, and the steel phase diagram in Fig 9.24, answer the following: (a) The TTT diagram shows cementite forming as a proeutectoid for certain processing cycles. What is the maximum amount of proeutectoid cementite that could be formed for 10110 steel? How could this be achieved (cite times and temperatures)? (b) What minimum temperature would be required to completely austenitize a sample of 10110 steel? (c) In a ‘full annealing’ process, would it be reasonable to completely austenitize 10110 steel? Why or why not? (d) Estimate the critical cooling rate for 10110 steel. Explain your reasoning. 2) What would be the approximate Brinell hardness of 10100 steel samples in the following microstructures? Explain the hardness differences in terms of the structural differences ( why do the different structures produce these different
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This note was uploaded on 10/02/2011 for the course AERO 1234 at Virginia Tech.

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2034hw10 - MSE2034 HW#10 (STALEY) Due Thursday April 15 Max...

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