Problem 1A 30 wt% Sn-70 wt% Pb alloy is heated to a temperature within the aliquid phase region. Ifthe mass fraction of each phase is 0.5, estimate:(a) The temperature of the alloy(b) The compositions of the two phases300100327€(PH)20wit18.34020183°C4.8CompositionLik61.980232°C97.810010005001400300200-100Problem 2An alloy of composition 80 wt% Sn-20 wt% Pb is slowly cooled from the melt to the temperature182°C, just below the eutectic temperature.a) Determine the mass fraction of the a phase.b) Determine the mass fraction of the eutectic structure.0300200100%327°C(Pb)a.L18.340T20Composition at S60T183C40Liquid61.960Composition (wt% SeRO2+280282097 A10046001500400H300 &200-100T100(SA)Problem 3A plain carbon-steel alloy of composition 98.6 wt% Fe and 1.4 wt% C is cooled to the temperature720°C, just below the eutectoid temperature.a) Make a schematic sketch of the microstructure, label all phases, and indicate theirapproximate compositionsb) Determine the mass fraction of the eutectoid cementite.

Problem 1: The unknown temperature with unknown phase composition marked on Pb-Sn diagram is given…

Answered: Problem 1 A 30 wt% Sn-70 wt% Pb alloy…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

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