0
Plastic deformation in metal causes it to change shape, usually under stress such as a spinning turbine vane. Ceramics cannot deform, they are too hard and would shatter.
Wiki User
∙ 11y ago
Add your answer:
Earn +20 pts
Difference between elastic and plastic deformation?
Elastic deformation returns to it's original shape after a strain is applied. Plastic deformation returns to a deformed shape after a strain is applied. The material's molecular bonds are strained to the point of fracture, making it not possible to return to the same state. Elastic deformation will return to its original shape. Plastic deformation is when you alter the original form. To understand more on this subject you might investigate failure analysis literature. Lots of good stuff there ratchet marks, beach marks, reverse bending etc... I believe the U.S. metallurgical society has the best reference material on this subject. A temporary shape change that is self-reversing after the force is removed, so that the object returns to its original shape, is called elastic deformation. In other words, elastic deformation is a change in shape of a material at low stress that is recoverable after the stress is removed. Examples would be the loading of a bridge or building support beam where the loads remain within the original design parameters, or the use of a safety pin where when it is opened it returns to it's unloaded shape. When the stress is sufficient to permanently deform the metal, it is called plastic deformation. Examples would be the building support beams for the twin towers, where the heat generated by the fires decreased the strength of the steel and allowed it to deform plastically, or the loads that are applied to a section of electrical conduit or mechanical piping in order to bend them into a specific shape. in elastic def. , the material returns to its original shape once force is removed. in plastic, the deformation is permanent and the material doesn't return to its original shape the elastic deformation happens in yield point and elastic deformation back to original size but plastic deformation will not back tto original size.
What is the Significance of recrystallization temperature in metalworking?
Recrystallization temperature in metal working can be defined as the temperature at which the plastic deformation takes place perfectly. The stresses induced during the process is are grater than the yield strength and less than the fracture strength.
How are hardness and tensile strength related?
There are tables that give you the Tensile Strength based on a Rockwell Hardness test of a specimen of metal. For example: Rc of 54 is a Steel of TSU = 300,000 psi. Google the internet for Rockwell Hardness Table.
What metal is used to make impeller?
Different kinds of metal can be used in making a propeller. Marine propellers are made from aluminum and stainless steel since they are corrosion resistant.
How it is defined the minimum design metal temperature?
MDMT usually is used for decision of metal thickness. this is the most important to design such as a drum , tank, etc.. in plant business.
Definition Hot working metal?
Plastic deformation of metals above the recrystallization temperature.
What are the properties of cermets?
Cermet is ideally designed to have the optimal properties of both a ceramic and metallic materials. Ceramics are composed of high temperature resistance and hardness, and metal has the ability to undergo plastic deformation. Dependant on the physical structure of the material, cermets can also be metal matrix composites, but cermets are usually less than 20% metal by volume.
Why are the metal deformation processes important commercially and technologically?
Efficient mass production of materials.
What is the example of artificial texture?
These are plastic toy, metal toys, sculpture, skin of young and old people, marble or ceramics.
What process does metal stamping entail?
A moving die, or forming-tool, presses into a sheet of metal and against a fixed die. The metal undergoes what is known as plastic deformation to take on the desired shape and thickness.
What is cold forming?
Cold forming refers to the strengthening of metal through plastic deformation. It is also known as strain hardening or cold working.
Why do you use metal for sauce pans?
Metal is a good conductor of heat. Metal is also much more durable for cooking in comparison to wood or plastic, which would burn or melt. And ceramics are too fragile.
Is Ceramic metal or non metal?
Ceramics are nonmetallic.
Are metallic bond is instantaneously renewed on mechanical deformation of the metal?
Metallic bonds are maintained more or less instantaneously on mechanical deformation of a metal, unless the deformation is so severe that the piece of metal being deformed is broken. Since metallic bonding extends throughout a single piece of metal, it does not need to be "renewed" after deformation.
What Categories of materials suitable for use as containers of ionic solutions?
Platinum (inert metal), Borosilicate glass, porcelain
What are different types of materials that are compounds?
there are steel,metal,fabric,rubber,paper,wood,nylon,wool,ceramics,iron,cotton,glass and plastic
What is internal plastic flow?
Until a metal reaches its elastic limit, it is undergoing elastic deformation. This means that the metal will regain its original dimensions when unloaded. Upon exceeding the elastic limit, the metal will become plastic and will not regain its original dimensions. A metal undergoes plastic flow when it experiences large deformations while loaded in the plastic region.
