Materials

Satisfactory Essays
Topics: Austenite, Steel
UNIVERSITI MALAYSIA PERLIS
PUSAT PENGAJIAN KEJURUTERAAN MEKATRONIK
School of Mechatronics Engineering

Assignment
Material Engineering ENT 145

Name: Ahmad Huzaifah Bin Azahari
No. Matrik: 121110055
Course: Mechanical
QUESTION 1
DESCRIBE CHARACTHERISTICS OF (a) AN ALLOY (b) PEARLITE (c) AUSTENITE (d) MARTENSITE (e) CEMENTITE (f) SPHERODITE AND (g) TEMPERED MARTENSITE.
(a)ALLOY
• Alloy steel is often subdivided into two groups: high alloy steels and low alloy steels. The difference between the two is defined somewhat arbitrarily. However, most agree that any steel that is alloyed with more than eight percent of its weight being other elements beside iron and carbon, is high alloy steel. Low alloy steels are slightly more common. The physical properties of these steels are modified by the other elements, to give them greater hardness, durability, corrosion resistance, or toughness as compared to carbon steel. To achieve such properties, these alloys often require heat treatment..Example of an alloy
 Alloy of aluminium: Duralumin,nambe,silumin

 Alloy of cobalt: Megallium,alnico,vitallium

 Alloy of copper: billon,brass,berryllium copper,bronze.

Charactheristics of an alloy:
Hardenability : the capability of the alloy to be hardened through heat treatment
Hardness/strength : the capability to resist pressure, force or other stress
Heat resistance : the capability to resist heat
Thermal conductivity : the capability to conduct heat
Electrical conductivity : the capability to conduct an electrical current
Machinability : the capability to be worked to a particular finish
Ductility : the capability to deform under tensile stress (be stretched)
Malleability : the capability to be worked under compressive stress (be compacted)
Weldability/joinability : the capability to be welded
Elasticity : the capability to return it to its original form after stress
Plasticity : the capability to undergo

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