MTE 271 Chapter 8 Quiz Questions
with 100% Correct Answers
The process of forming new grains by heat-treating a cold-worked material is known as
_____.
A) heat grain growth
B) recrystallization
C) cold grain transformation
D) grain reformation - Answer- recrystallization
T/F Grain growth will occur in most materials if they are subjected to a high enough
temperature. - Answer- True
The driving force for recrystallization is the difference between the _____ of a cold-
worked material and that of a recrystallized material.
A) ductility
B) dislocation density
C) surface energy
D) internal energy - Answer- internal energy
Deforming of materials above the recrystallization temperature is referred to as ______
working. Conducting shaping or deformation of materials at a temperature below the
recrystallization temperature is referred to it as _____ working. - Answer- hot, cold
The three stage of annealing are:
A) Strengthening, Working, Recovery
B) Recovery, Rehabilitation, Grain Growth
C) Dislocating, Recovery, Nucleation
D) Recovery, Recrystallization, Grain Growth - Answer- Recovery, Recrystallization,
Grain Growth
When joining two cold worked metals by welding, areas of the metals in close proximity
of the weld are called ______-____________ zones. The mechanical properties in
these areas are critically reduced during the welding process. - Answer- heat-affected
T/F No strengthening occurs during deformation by hot working; consequently, the
amount of plastic deformation is almost unlimited. - Answer- True
During hot working, the metallic material is continually ______________. - Answer-
recrystallized
with 100% Correct Answers
The process of forming new grains by heat-treating a cold-worked material is known as
_____.
A) heat grain growth
B) recrystallization
C) cold grain transformation
D) grain reformation - Answer- recrystallization
T/F Grain growth will occur in most materials if they are subjected to a high enough
temperature. - Answer- True
The driving force for recrystallization is the difference between the _____ of a cold-
worked material and that of a recrystallized material.
A) ductility
B) dislocation density
C) surface energy
D) internal energy - Answer- internal energy
Deforming of materials above the recrystallization temperature is referred to as ______
working. Conducting shaping or deformation of materials at a temperature below the
recrystallization temperature is referred to it as _____ working. - Answer- hot, cold
The three stage of annealing are:
A) Strengthening, Working, Recovery
B) Recovery, Rehabilitation, Grain Growth
C) Dislocating, Recovery, Nucleation
D) Recovery, Recrystallization, Grain Growth - Answer- Recovery, Recrystallization,
Grain Growth
When joining two cold worked metals by welding, areas of the metals in close proximity
of the weld are called ______-____________ zones. The mechanical properties in
these areas are critically reduced during the welding process. - Answer- heat-affected
T/F No strengthening occurs during deformation by hot working; consequently, the
amount of plastic deformation is almost unlimited. - Answer- True
During hot working, the metallic material is continually ______________. - Answer-
recrystallized
