Mechanical Engineering

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Mechanical Engineering


Gibbs Volume Free Energy for Formation in Fe-C Diagram-Multiple Choice Question

Question Indicate whether the following statement is true or false: Nucleation and growth of a new phase within a parent phase occurs when the change in Gibbs volume free energy for formation of the new phase is a zero.     ... Read More

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Formation of Nuclei on Pre-existing Surfaces or Interfaces-Multiple Choice Question

Question Indicate whether the following statement is true or false: Heterogeneous nucleation involves the formation of nuclei on pre-existing surfaces or interfaces.     ... Read More

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Growth Step of a Phase Transformation-Multiple Choice Question

Question Indicate whether the following statement is true or false: The growth step of a phase transformation begins once an embryo reaches a size larger than the critical nucleus size, r*.     ... Read More

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Formula for a Ceramic Composed of 02, Ti 4 and Ba 2 ions is BaTi0 2-Multiple Choice Question

Question Indicate whether the following statement is true or false: The formula for a ceramic composed of 02, Ti 4 and Ba 2 ions is BaTi0 2.     ... Read More

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Allowed Defect in NaCl is a Missing Cation Paired with an Interstitial Cation-Multiple Choice Question

Question Indicate whether the following statement is true or false: An allowed defect in NaCl is a missing cation paired with an interstitial cation.     ... Read More

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Effects of Borosilicate Glass when Heated-Multiple Choice Question

Question Indicate whether the following statement is true or false: When a borosilicate (70% Si0 2 + 30% B203) glass is rapidly cooled from a high temperature, it's final microstructure will consist of equiaxed crystalline grains.     ... Read More

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Pearlite Phase in the Fe-C Phase Diagram-Multiple Choice Question

Question Indicate whether the following statement is true or false: Pearlite is a phase found on the Fe-C phase diagram.     ... Read More

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Example of Cooperative Growth of the Ferrite and Cementite Phases-Multiple Choice Question

Question Indicate whether the following statement is true or false: When eutectoid composition steel transforms to pearlite, this is an example of cooperative growth of the ferrite and cementite phases.     ... Read More

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Precipitation Hardening Process to Maximize Temperature-Multiple Choice Question

Question Indicate whether the following statement is true or false: Precipitation hardening is maximized by slowly cooling from the solution treatment temperature so that precipitates form predominately on the grain boundaries.   ... Read More

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Results of Cooling carbon Steel to Room Temperature-Multiple Choice Question

Question Indicate whether the following statement is true or false: Slowly cooling a fully austenitic eutectoid composition plain carbon steel to room temperature results in a microstructure consisting of pearlite plus bainite.     ... Read More

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Hardenability of 4340 Steel and 1040 Steel-Multiple Choice Question

Question Indicate whether the following statement is true or false: Hardenability of 4340 steel is superior to that of 1040 steel.     ... Read More

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Maximum Hardness of 4340 Steel and 1040 Steel-Multiple Choice Question

Question The maximum hardness of 4340 steel is superior to that of 1040 steel.     ... Read More

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