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Unformatted text preview: IE 320 - Spring 2003 Homework Ch. 11 Introduction to Materials Science
11.1 Name the two stages involved in the formation of particles of a new phase. Briefly describe each. 11.5 The kinetics of the austenite-to-pearlite transformation obey the Avrami relationship. Using the fraction transformed–time data given below, determine the total time required for 95% of the austenite to transform to pearlite: 11.15 Make a copy of the isothermal transformation diagram for an iron– carbon alloy of eutectoid composition (Figure 11.14) and then sketch and label on this diagram time– temperature paths to produce the following microstructures: (a) 100% coarse pearlite. (b) 100% tempered Martensite. (c) 50% coarse pearlite, 25% bainite, and 25% Martensite.
2 1 IE 320 - Spring 2003 Introduction to Materials Science
11.29 Cite two reasons why martensite is so hard and brittle. 11.40 What is the principal difference between natural and artificial aging processes? 3 2 ...
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- Spring '10