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# Past Year Questions: Phase Diagrams Notes | EduRev

## Mechanical Engineering : Past Year Questions: Phase Diagrams Notes | EduRev

The document Past Year Questions: Phase Diagrams Notes | EduRev is a part of the Mechanical Engineering Course Manufacturing and Industrial Engineering.
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Question 1:The crystal structure of austenite is

[ME 2011]

Question 2:The binary phase diagram of metals P and Q is shown in the figure. An alloy X containing 60% P and 40% Q (by weight) is cooled from liquid to solid state. The fractions of solid and liquid (in weight percent) at 1250°C, respectively, will be

[ME 2019, Set-2]

Question 3:Denoting L as liquid and M as solid in a phasediagram with the subscripts representing different phases, a eutectoid reaction is described by

[ME 2018, Set-2]

Question 4:In the phase diagram shown in the figure, four samples of the same composition are heated to temperatures marked by a, b, c and d.
Composition (Arbitrary Units)

At which temperature will a sample get solutionized the fastest?

[ME 2016, Set-2]

Question 5:In a binary system of A and B a liquid of 20% A (80% B) is coexisting with a solid of 70% A(30%B). For an overall composition having 40% A the fraction of solid is

[ME 2016, Set-2]

Question 6:If a particular Fe-C alloy contains less than 0.83% carbon, it is called

[ME 2007]

Question 7:The percentage of carbon in grey cast iron is in the range of

[ME 2004]

Question 8:The iron carbon diagram and the TTT curves are determined under

[ME 1996]

Question 9:Increase in carbon content in plain carbon steel raise its

[PI 1992]

Question 10:The process of reheating the martensitic steel to reduce its brittleness without any significant loss in its hardness is

[ME 2014, Set-1]

Question 11:The main purpose of spheroidising treatment is to improve

[ME 2006]

Question 12:When 1.0% plane carbon steel is slowly cooled from the molten state to 740°C, the resulting structure will contain

[1990]

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## Manufacturing and Industrial Engineering

91 videos|52 docs|59 tests

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