
(a)
Interpretation:
The amount composition & hardness of material at
Concept Introduction:
Microstructure is a very small structure of any material. For a material, it describes the physical properties like hardness, strength, ductility, temperature behaviour and corrosion resistance of the material. The properties of any substance can be observed under optical microstructure. Materials such as metals, polymers, ceramics or composites show optimistic properties under microstructure.

Answer to Problem 12.103P
The composition, hardness and amount are
Explanation of Solution
Given:
Graph showing
Calculation:
As shown in the given diagram, at the line
As from the figure, the effect of hardness of martensite in steel, the hardness of martensite at
Where, %M=amount of martensite
Put, the values in lever rule,
Therefore,
(b)
Interpretation:
The amount composition & hardness of material at
Concept Introduction:
Material hardness is the property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which process stiffness resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal. Material hardness is expressed in terms of hardness number.

Answer to Problem 12.103P
The composition, hardness and amount are
Explanation of Solution
Given:
Graph showing
Calculations:
As shown in the given diagram, at the line
As from the figure, the effect of hardness of martensite in steel, the hardness of martensite at
Where, %M=amount of martensite
Put, the values in lever rule,
Therefore,
(c)
Interpretation:
The amount composition & hardness of material at
Concept Introduction:
Material hardness is the property of a metal due to which material resist the plastic deformation.Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which process stiffness resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal. Material hardness is expressed in terms of hardness number.

Answer to Problem 12.103P
The composition, hardness and amount are
Explanation of Solution
Given:
Graph showing
Calculations:
As shown in the given diagram, at the line
As from the figure, the effect of hardness of martensite in steel, the hardness of martensite at
Where, %M=amount of martensite
Put, the values in lever rule,
Therefore,
(d)
Interpretation:
The amount composition & hardness of material at
Concept Introduction:
Material hardness is the property of a metal due to which material resist the plastic deformation. Plastic deformation means material deformation which undergoes non-reversible change. Hardness is the property of any material which process stiffness resistance to bending, scratching or cutting. Hardness is not constant or fixed for all material, but it depends upon strength and plasticity of metal. Material hardness is expressed in terms of hardness number.

Answer to Problem 12.103P
The composition, hardness and amount are
Explanation of Solution
Given:
Graph showing
Calculations:
As shown in the given diagram, at the line
As from the figure, the effect of hardness of martensite in steel, the hardness of martensite at
Where, %M=amount of martensite
Put, the values in lever rule,
Therefore,
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Chapter 12 Solutions
Essentials of Materials Science and Engineering, SI Edition
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