List of top Metallurgical Engineering Questions on Material Science

The strength of grain boundary and grains are equal:
The Larson-Miller parameter is used to:
Which of the following is in the decreasing order of hardness in Rockwell C-scale?
For an ASTM grain size number of 8, approximately how many grains would be visible per square inch at a magnification of 100$\times$?
Razor blades are made of:
If the mean bond length increases with temperature in material, then the material exhibits:
Which of the following metals is most susceptible to stress corrosion cracking (SCC) in chloride environments?
According to Fick's law of diffusion, the diffusion flux is proportional to:
The diffusion mechanism that involves atoms moving through vacancies in a solid is called:
In a diffusion process, if the concentration of a species is higher at the surface of a material, the diffusion flux will:
Which of the following statements is true regarding phase equilibrium in a binary alloy system?
The primary strengthening mechanism in 70:30 brass is
The Vicker’s diamond pyramid method of hardness determination does not give accurate result, when employed for the
The yield point in fatigue loading compared to that in static loading is less. The ratio of ultimate tensile strength to endurance limit of a material subjected to fatigue loading is
Deformation by slip occurs in
True strain (\( \varepsilon \)) and engineering strain (\( e \)) are related by
Perfect plastic material is
Metals with high monotonic strain-hardening exponents ($n > 0.15$) and those with a low strain-hardening exponent ($n < 0.15$) respectively would undergo
Magnetic permeability of iron is increased by:
Plastics as a material of construction suffer from the drawback of low:
Machinability of hard alloys and tool steels is improved by:
Which of the following are the low molecular weight substances added to polymers to increase plasticity and flexibility?
Hard magnetic material is characterised by:
Polystyrene belongs to:
Which of the following is not the characteristics of a gray cast iron?