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( a ) Explain what Nucleation and Growth in Phase transformation is . ( 1 0 Marks ) ( b ) Explain the how temperature
a Explain what Nucleation and Growth in Phase transformation is Marksb Explain the how temperature effect the nucleation and phase transformation rate marksc What is the key difference between equilibrium and nonequilibrium coolingheating Marksd Explain how the grain size can be changed by controlling the cooling rate Markse An alloy, illustrated by the phase diagram below, is currently at the temperature indicated as Ts The alpha phase is highly electrically conductive, and the beta phase is low in electrical conductivity. Explain the required cooling process to obtain i a high ii an intermediate iii and a low electrically conductive material using the material at composition and Ts indicated in the diagram. Marks
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