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You need to login to ask any Questions from chapter phase-diagrams of material-science

Chapter:

phase-diagrams

11. When α, L and β phase fields touch isorm line what are respective phase compositions?

$When α, L and β phase fields touch isorm line what are respective phase compositions?\r\n$

8.0 wt%, 71.9 wt%, 91.2 wt% of Ag 8.0 wt%, 91.2 wt%, 71.9 wt% of Ag 71.9 wt%, 91.2 wt%, 8.0 wt% of Ag 91.2 wt%, 8.0 wt%, 71.9 wt% of Ag

8.0 wt%, 71.9 wt%, 91.2 wt% of Ag

For binary systems, when three phases are present, re will be F = 0, so composition is fixed.

Hint Answer

12. At certain temperature maximum concentration of solute atoms that dissolve in solvent to form solid solution, this condition is called ______

Solubility Formation of phase Solubility limit Formation of super saturated solution

Solubility limit

At this limit re will maximum solubility o solution and solution formed is saturated above this re will be formation of super saturated solution.

Hint Answer

13. In which of following alloy is rapidly cooled?

Anealing Coring Hot working Cold working

Coring

Hot working, cold working and annealing are all processes in which alloy will be heated. In coring alloy is rapidly cooled down.

Hint Answer

14. The number of components are 2, number of phases are 2 and degrees of freedom are 1. Then which of following equilibrium is it?

Invariant Univariant Bivariant Trivariant

Univariant

We can solve above question by using Gibb’s phase rule. When given values are put in equation value is obtained to be one which makes reaction univariant.

Hint Answer

15. Any composition left and right of P will generate _______

Excess of liquid and α Excess of α and liquid Excess of liquid and β Excess of β and liquid

Excess of α and liquid

Any composition left of P will generate excess ? and similarly right of P will give rise to an excess amount of liquid.

Hint Answer

16. What is hardest phase of Fe-C system?

$What is hardest phase of Fe-C system?\r\n$

Graphite Bainite Martensite Cementite

Cementite

Cementite is hardest phase in Iron-Carbon system whereas martensite is not a phase because it is metastable in nature.

Hint Answer

17. Which of following portion(s) of given graph has a boiling point?

$Which of following portion(s) of given graph has a boiling point?\r\n$

2 3 4 5

4

At this point substance gets converted from liquid to gas.

Hint Answer

18. What is α region in given phase diagram?

$What is α region in given phase diagram?\r\n$

Homogeneous liquid solution Semi solid solution Vapor Substitutional solid solution

Substitutional solid solution

?-region is a substitutional solid solution of two components A and B. And given phase diagram denotes Cu-Ni phase diagram.

Hint Answer

19. Along phase boundaries, phases on eir side will be in __

Equal Equilibrium Different Constant

Equilibrium

At phase boundary, phase compositions will be same.

Hint Answer

20. An alloy 30 wt% Ni- 70wt % Cu at 1095 °C (2000 °F) will lie in which state?

Solid state Liquid state Mixture of solid and liquid state α state

α state

An alloy 30 wt% Ni- 70wt % Cu at 1095 �C (2000 �F) will lie in region where it is in ? state which can be observed from its phase diagram.

Hint Answer

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All Chapters

View all Chapter and number of question available From each chapter from material-science

Atomic Structure and Interatomic Bonding

Atomic Structure and Interatomic Bonding

Structure of Crystalline Solids

Structure of Crystalline Solids

Imperfections in Solids

Imperfections in Solids

Diffusion

Mechanical Properties of Metals

Mechanical Properties of Metals

Dislocations and Strengthening Mechanisms

Dislocations and Strengthening Mechanisms

Failure

Phase Diagrams

Phase Transformations in Metals

Phase Transformations in Metals

Applications and Processing of Metal Alloys

Applications and Processing of Metal Alloys

Structures and Properties of Ceramics

Structures and Properties of Ceramics

Topics

This Chapter phase-diagrams consists of the following topics

Phase Diagrams

When α, L and β phase fields touch isorm line what are respective phase compositions?

$When α, L and β phase fields touch isorm line what are respective phase compositions?\r\n$

;

At certain temperature maximum concentration of solute atoms that dissolve in solvent to form solid solution, this condition is called ______

In which of following alloy is rapidly cooled?

The number of components are 2, number of phases are 2 and degrees of freedom are 1. Then which of following equilibrium is it?

Any composition left and right of P will generate _______

What is hardest phase of Fe-C system?

$What is hardest phase of Fe-C system?\r\n$

;

Which of following portion(s) of given graph has a boiling point?

$Which of following portion(s) of given graph has a boiling point?\r\n$

;

What is α region in given phase diagram?

$What is α region in given phase diagram?\r\n$

;

Along phase boundaries, phases on eir side will be in __

An alloy 30 wt% Ni- 70wt % Cu at 1095 °C (2000 °F) will lie in which state?

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