Metallurgy

Question 1

The property of the metal to resist penetration is

Answer 1

Hardness

Question 2

Tendency to fracture without change in shape is called

Answer 2

Brittleness

Question 3

The property of the metal to allow itself to be deformed permanently with out rupture is

Answer 3

Malleability

Question 4

The property of a metal which allows it to be drawn without breaking is known as

Answer 4

Ductility

Question 5

The weight of a unit volume of a metal is

Answer 5

Density

Question 6

The range of heating temperature, when the internal structure of metal is altered is known as

Answer 6

Critical Range

Question 7

The process of heating metal above the critical stage and then cooling slowly is known as

Answer 7

Annealing

Question 8

Quenching process in heat treatment is performed by quenching the heated metal in

Answer 8

Oil or Water

Question 9

The re - heating of hardened metal to a temperature below critical range and followed by cooling is the process of

Answer 9

Tempering

Question 10

Case hardening is the process to harden the

Answer 10

Surface of the metal

Question 11

The deformation of material caused by an applied load is termed as

Answer 11

Strain

Question 12

The Load limit up to which the metal can with stand with out permanent deformation or elongation is termed as

Answer 12

Elastic Limit or Yield Point

Question 13

What is the stress corresponding to the 0.2% of strain from the stress-strain curve of the given ductile material.

Answer 13

Proof Stress

Question 14

The maximum tensile load per square inch which a material can with stand is known as

Answer 14

Tensile Strength

Question 15

The property of resisting penetration or permanent distortion is called

Answer 15

Hardness

Question 16

Which types of heat treatment is used to soften the metals

Answer 16

Annealing

Question 17

The property of resisting a change in the relative position of molecules or the tendency to fracture without change of shape is called

Answer 17

Hardness

Question 18

The property of metals which allows them to be bent or permanently distorted without rupture

Answer 18

Ductility

Question 19

Which of the following properties permits the manufacture of sheets, bar stock, forgings and fabrication by bending and hammering

Answer 19

Malleability

Question 20

The property which is essential in the manufacture of wire and tubing by drawing

Answer 20

Ductility

Question 21

The property of returning to the original shape when the force causing the change of shape is removed is called

Answer 21

Elasticity

Question 22

Each material has a point beyond which if it is loaded, permanent distortion will take place, this point is called

Answer 22

Yield Point

Question 23

The average melting point of steel is

Answer 23

2500°F

Question 24

The fusing point of aluminum is

Answer 24

1100°F

Question 25

The property of transmitting heat or electricity is called

Answer 25

Conductivity

Question 26

Critical range for the steel is

Answer 26

A1 to A3 Boundaries

Question 27

Annealing is the process of heating steel __________ critical range.

Answer 27

Above

Question 28

In annealing, the cooling of the material is

Answer 28

Slow

Question 29

The annealing process ____________ the metals.

Answer 29

Softens

Question 30

In normalizing process steel is allowed to cool in ___________.

Answer 30

Still Air

Question 31

By normalizing, strength of the steel is increased about to

Answer 31

20%

Question 32

Hardening is composed of

Answer 32

Heating and Quenching

Question 33

Re-heating of hardened steel to a temperature below the critical range is called

Answer 33

Tempering

Question 34

Which of the following process relieves internal strains and softens the metals some what lesser than annealing

Answer 34

Normalizing

Question 35

Strain is the deformation of material caused by an

Answer 35

Applied Load

Question 36

The load acting on a material is called

Answer 36

Stress

Question 37

The greatest load per inch of original cross-sectional area, which a material can with stand without a permanent deformation, remaining upon complete release of the load is called

Answer 37

Elastic Limit or Yield Point

Question 38

The limit beyond which load per square inch increases in, strain cease to be directly proportional to the increase in stress, is called

Answer 38

Proportional Limit

Question 39

The law of proportionality between stress and strain is called

Answer 39

Hook's Law

Question 40

The ratio of unit stress and unit strain is called

Answer 40

Modulus of Elasticity