Exam Question
(a) Define creep and specify the conditions under which it occurs? (8)
(b) Discuss three metallurgical processing techniques that are employed to enhance the creep resistance of metal alloys (8)
Class 2 (2nd Engineer)
MEKG
📅 Sep 2024
Reference Answer
### Part (a): Definition of Creep and Conditions for Occurrence (8 Marks)
#### Definition of Creep
Creep is defined as the time-dependent, permanent plastic deformation of a material subjected to a constant stress (or load) at elevated temperatures. Critically, this deformation occurs at stress levels significantly below the material's yield strength. It is a slow, continuous process that can eventually lead to component failure or rupture over an extended service life.
#### Stages of Creep
#### Definition of Creep
Creep is defined as the time-dependent, permanent plastic deformation of a material subjected to a constant stress (or load) at elevated temperatures. Critically, this deformation occurs at stress levels significantly below the material's yield strength. It is a slow, continuous process that can eventually lead to component failure or rupture over an extended service life.
#### Stages of Creep
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