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e150031
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Hi,
I want to learn that do atoms or crystals dislocate in the plastic deformation of metals.
I want to learn that do atoms or crystals dislocate in the plastic deformation of metals.
e150031 said:Hi,
I want to learn that do atoms or crystals dislocate in the plastic deformation of metals.
stewartcs said:
granpa said:what about memory metal?
Plastic deformation of metals is the process in which a metal undergoes a permanent change in shape or size due to an applied force. This occurs when the metal is pushed, pulled, or twisted beyond its elastic limit, causing the atoms to rearrange and the metal to permanently change its shape.
The main factors that affect plastic deformation of metals are the type of metal, the temperature, the rate of loading, and the amount of stress applied. Different metals have different properties and will behave differently under stress. Higher temperatures can make metals more malleable and easier to deform. The rate of loading, or how quickly the force is applied, can also impact the amount of plastic deformation that occurs.
Elastic deformation is a temporary change in the shape or size of a metal when a force is applied. Once the force is removed, the metal returns to its original shape. Plastic deformation, on the other hand, is a permanent change in shape or size that occurs when a metal is pushed beyond its elastic limit. The metal will not return to its original shape even after the force is removed.
Plastic deformation can significantly alter the properties of metals. It can increase the strength and hardness of the metal, making it more resistant to deformation in the future. However, it can also decrease the ductility and toughness of the metal, making it more prone to cracking or breaking under stress.
Plastic deformation is commonly used in metalworking processes such as forging, rolling, and extrusion. It is also used in the manufacturing of various products, including cars, airplanes, and household appliances. Additionally, plastic deformation is essential in shaping materials for construction, such as steel beams and pipes.