MSE_2610_HW_7 - MSE 2610 Introduction to the Mechanical...

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MSE 2610 Introduction to the Mechanical Properties of Materials Fall 2008 Homework Assignment #7 Due: 6 November 2008 1.) Identify the following microstructures: For each, briefly describe: What phase or phases are present? What are the crystal structure(s) of the phases? What approximate ranges of carbon are present in each of the phases? What is a typical morphology for this microstructure (make a sketch). a. Austenite b. Ferrite c. Pearlite d. Martensite 2.) Answer the following about the equilibrium cooling (cooling sufficiently slowly that the phases present are always as represented on the equilibrium phase diagraram) of austenitic steel: a. What is proeutectoid ferrite? b. What is the highest carbon concentration steel can have and still have proeutectoid ferrite upon cooling? c. What percentage of pearlite is ferrite? What percentage of pearlite is cementite? d. In a 0.4% carbon steel, what percentage of the microstructure will be pearlite? What will be the remainder?
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This note was uploaded on 12/24/2008 for the course MSE 261 taught by Professor Sass during the Fall '06 term at Cornell University (Engineering School).

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MSE_2610_HW_7 - MSE 2610 Introduction to the Mechanical...

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