Definition of Work Hardening

What is Work Hardening
Increasing the dislocation density will increase the yield strength.

Work Hardening is a difficult process to understand. but, once you understand the process, you will never forget.

Work hardening is a process when the metal is strained beyond its original yield point. As the material is filled up with more dislocations (increasing dislocation density), more dislocations are prevented to develop more dislocation-formation. This resistance is called nucleating and thus, the resistance to plastic deformation. Therefore, the material has been strengthened. However, the dislocation density cannot be increased to an infinitely high value as the crystalline structure will disappear. Usually, work hardening is done to a reasonably high melting point material by using cold rolling or cold drawing.

Strengthening Process for Metals and Alloys

Strengthening is a process to improve or reduce the mechanical properties of a material inclusive of yield strength and hardness to suit the needs of our application. The main principle of the strengthening mechanism is by reducing the mobility of dislocations; it will reduce the occurrence of plastic deformation and thus will strengthen the material. There are four main strengthening mechanisms applicable to metals and alloys
1. Work Hardening
2. Solid Solution Strengthening
3. Precipitation Hardening
4. Grain Boundary Strengthening

Single-Acting and Double-Acting Pumps

Single-Acting and Double-Acting Pumps

A single-acting pump is one that takes a suction, filling the pump cylinder on the stroke in only one direction, called the suction stroke, and then forces the liquid out of the cylinder on the return stroke, called the discharge stroke. A double-acting pump is one that, as it fills one end of the liquid cylinder, is discharging liquid from the other end of the cylinder.On the return stroke, the end of the cylinder just emptied is filled, and the end just filled is emptied.

Why do we need Material Science and Metallurgy in Mechanical Engineering

Most of us has got a question that Why do we need Material Science and Metallurgy in Mechanical Engineering?

But there is a big need to know the material properties of any Project. These properties will decide the capabilities of our Project.

List of Material Properties
Tensile Strength
Compressive Strength
Shear Strength
Yield Strength
Ductility
Poisson's Ratio
Youngs Modulus
Specific Weight
Specific Modulus
We all know that what these are all

Advantages of Mechanical Engineering

As we have discussed so many parts of Mechanical engineering, we should know what are its Advantages and Disadvantages.
Here are some Advantages
Mechanical engineers are found in almost all sectors of industry. So, employment prospects are good. Also, because it is a core engineering discipline, having a a great knowledge in mechanical engineering enables you to enter fields or pursue advanced study in other areas such as bioengineering, environmental engineering, and nanotechnology............
Dont think that these are the only advantages, we can discuss thousands of Advantages.

fell free to comment

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Heat Transfer modes

there are 3 types of Heat transfer modes.
with these modes only heat transfers
they are

Heat Conduction

Heat Convection

Heat radiation