Sketch a phase diagram for two soluble components. Show the melting tem-perature of each element. Label all axes, curves, and zones.
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Sketch a phase diagram for two soluble components. Show the melting tem-
perature of each element. Label all axes, curves, and zones.
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- Based on the phase diagrams, estimate the solubilities of Ni, Zn, Al, Sn, andBe in copper at room temperature. Are these solubilities expected in view ofHume-Rothery’s conditions for solid solubility? ExplainWhat is meant by a phase? Describe an example. And what is the equilibrium phase diagram?What is the maximum amount of Pb (in %) with which Sn may be alloyed to render a single β phase at 183°C. Looking at the Binary Phase Diagram
- 3 Materials Science. From picture below.Describe in detail the phase transformations (showing cooling curves, corresponding optical backgrounds, etc.) that takes place during solidification of the following alloys:(a) 99% Cu - 1% Al(b) 96% Cu - 4% Al(c) 80% Cu - 20% AlWhat are the effects of alloving elements on Fe-C binary phase diagramWhat is a peritectic phase diagram? Draw a typical equilibrium diagram for a eutectic type of system with limited solid solubility and explain its important features.
- Refer to Figure 1 showing the phase diagram for the Fe-Fe3C system. Consider 1.0 kg of austenite containing 1.15 wt% C, cooled to below 727 C (1341 F). What is the proeutectoid phase? How many kilograms each of total ferrite and cementite form? How many kilograms each of pearlite and the proeutectoid phase form? Schematically sketch and label the resulting microstructure.Specify all temperature-composition points at which eutectics, eutectoids and peritectics. At 700 degrees Celsius and composition of 20% by weight of copper, calculate the compositions by fraction of each phase for copper?Compare the Cu-Ni binary phase diagram with the Al2O3-Cr2O3 binary phase diagram. Why are they so similar? HINT: Review the Hume-Rothery rules.
- In Figure 1 (phase diagram), an alloy composition of 95 wt% Mg and 5 wt% Al is cooled from 700 C to 475 C. An analysis of the resulting ε solid-phase composition reveals that it has a higher Mg content than is anticipated by the phase diagram.a) Explain why this might be the case and how your reasoning results in the higher-than-expected Mg content.b) Provide a sketch showing the likely distribution of Mg content within the volume of ε solid-phase.Consider the phase diagram of the iron-carbide iron system. (a) Calculate the mass fractions of ferrite α and cementite in pearlite. (b) What is the carbon concentration in an alloy whose total cementite fraction is 0.10? (c) For an alloy with 0.5% p C at 735 oC, what are the phases present, what are their concentration and mass fractions.For an alloy containing 20% Al- 80% Si (see figure 1 ), do the following: a) Determine the freezing range and freezing interval of the given alloy, b) Determine the amount of the phasers at 578 oC c)Determine the amounts and compositions of each phase at 576 oC h) Determine the amount of alpha eutectic and beta eutectic