問題一覧
1
The Charpy and Izod tests are types of
impact tests
2
Nitriding of steel by
ammonia gas
3
An Impact Test measures
toughness
4
The brinell hardness testers uses
a steel ball indenter
5
At normal temperature High Carbon Steel is harder because
of the percentage of carbon in the granules
6
Grinding of a steel reveals a dull but spark pattern (lots of forking)
It is likely to be high carbon steel
7
Thermal conductivity
ability of a material to conduct a certain amount of heat within a given time, copper is a good example.
8
Cementite is
Strong but hard and brittle.
9
Metals which contain iron is
ferrous metals
10
the aluminum will have
a lower VPN than the steel
11
Plasticity
is the opposite to elasticity
12
Fatigue tests can be carried out
either on individual components or on complete aircraft structure
13
Steel annealing process it
relieves internal stress suffered after engineering processes
14
A steel with 1.3 % carbon content is
a high carbon steel
15
Toughness is the opposite of
brittleness
16
a material to fracture when subjected to a shock loading or blow
a brittleness.
17
Normalizing heat treating
Iron- base metals
18
The carbon content in medium carbon steel is
0.3-0.8 %
19
Case hardening is
heat-treating process of metal produces a hard, wear-resistant surface over a strong, tough core
20
Pearlite is a laminate microstructure of steel consisting of
ferrite and cementite.
21
is the ability to resist off-set (scissor action) loads
Shear strength
22
the effects of annealing steel
decrease in internal stress ,softening of the metal