Metals

Question 1

Plastic deformation is

Answer 1

Permanent

Question 2

Plastic deformation occurs when

Answer 2

Bonds within a material are broken

Question 3

Ductility=

Answer 3

The capacity to be drawn into a wire

Question 4

Malleability=

Answer 4

The ability to be pounded into thin sheets are shaped using a hammer

Question 5

Tensile tests are measurements of

Answer 5

Strength

Question 6

Yield strength is defined by

Answer 6

A 0.2% offset from the linear elastic region

Question 7

What data from a tensile test can be used to measure ductility

Answer 7

%elongation

%reduction in area

Question 8

High strength steels show ……. hence use a …… strength

Answer 8

Continuous yielding

Proof strength

Question 9

Mild steels show a ……hence use an ……. strength

Answer 9

Yield drop

Upper and lower yield strength

Question 10

A yield drop is important when….. because it can form

Answer 10

Press forming components

Permanent deformation

Question 11

What strength do we use for design and why

Answer 11

Yield strength

For safety

Question 12

We can change the shape and properties of materials by …… them beyond their …..

Answer 12

Stressing

Yield point

Question 13

4 types of metal forming

Answer 13

Rolling
Extruding
Forging
Sheet forming