Questions and Answers
What is the term used to describe the loss of ductility due to physical or chemical changes in a material?
What is the term used to describe the part of the carbon content of steel or iron that is in the form of graphite or temper carbon?
What is the term used to describe materials with the same properties in all directions?
What is the term used to describe the ease with which materials can be cut?
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What is the term used to describe the mechanical property that indicates a material's susceptibility to extreme deformation to rolling or hammering?
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What is the process of increasing hardness and strength by plastic deformation at a temperature lower than the recrystallization range?
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What is the term used to describe the capacity of a material to withstand a shock load without breaking?
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What is the term used to describe a steel that has been deoxidized with a strong deoxidizing agent, such as aluminum or silicon, to eliminate reaction carbon and oxygen during solidification?
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What is the maximum stress a material can withstand before failure?
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What is Poisson's ratio a measure of?
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What is a substance composed of two or more elements, at least one of which is a metal?
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What type of destructive test involves breaking a specimen supported at both ends as a simple beam?
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What is the process of deforming a metal at a temperature below the recrystallization temperature?
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What is the loss of carbon from the surface of steel during rolling, forging, and heat treating?
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What is the ability of a material to be deformed and return to its original shape?
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Which of the following are indices for measuring ductility?
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Study Notes
Material Properties
- The maximum stress a material can withstand before failure is called ultimate stress.
- Poisson's ratio is the ratio of lateral deformation to longitudinal deformation.
- Resilience is not a correct answer for maximum stress.
Material Types
- An alloy is a substance with metallic properties, composed of two or more elements, at least one of which is a metal.
- A mixture is not a type of material with metallic properties.
Destructive Tests
- The Izod Test is a type of destructive test in which the specimen, supported at both ends as a simple beam, is broken by the impact of a falling pendulum.
- The Charpy Test is a type of destructive test in which the specimen, supported at both ends as a cantilever, is broken by the impact of a falling pendulum.
- The Tensile Test and Hardness Test are not types of destructive tests that involve a falling pendulum.
Material Processes
- Cold Working is the process of deforming a metal physically at a temperature below the recrystallization temperature, at a rate to produce strain hardening.
- Tempering, Hot Working, and Extrusion are not the same as Cold Working.
- Decarburization is the loss of carbon from the surface of steel, occurring during rolling, forging, and heat treating, when the surrounding medium reacts with the carbon.
Mechanical Properties
- Ductility is a mechanical property that permits permanent deformation before fracture.
- Brittleness, Toughness, and Hardness are not the same as Ductility.
- Percent Elongation, Percent Reduction in Area, and Percent Reduction in Volume are indices for measuring ductility.
- Percent Clearance is not a correct index for measuring ductility.
Other Material Properties
- Elasticity is the ability of a material to be deformed and return to its original shape.
- Plasticity, Toughness, and Resilience are not the same as Elasticity.
- Embrittlement is the loss of ductility due to physical or chemical change of the material.
- Isotropy is a property of materials with the same properties in all directions.
- Machinability is an indefinite property that refers to the ease with which materials can be cut.
Material Failure
- The smallest area at the point of rupture of a tensile specimen divided by the original area is called Percent Reduction in Area.
- Percent Elongation, Percent Reduction in Volume, and Percent Deformation are not the same as Percent Reduction in Area.
Heat Treatment
- Strain Hardening is the process of increasing hardness and strength by plastic deformation at a temperature lower than the recrystallization range.
- Tempering, Normalizing, and Annealing are not the same as Strain Hardening.
- Artificial Aging is the process of aging a body (metal) at an elevated temperature.
- Natural Aging is not the same as Artificial Aging.
Steel Types
- Killed Steel is a type of steel that has been deoxidized with a strong deoxidizing agent, such as aluminum or silicon, to eliminate reaction carbon and oxygen during solidification.
- Rimmed Steel, Wrought Steel, and Carburized Steel are not the same as Killed Steel.
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Description
Test your knowledge of materials science concepts, including stress, Poisson's ratio, and alloys.
