Phase Diagram Technique
Iron-Carbon Phase Diagram
TTT/CCT Diagrams
Other Alloys
Basic Manufacturing Processes
100
Horizontal line constructed across a two-phase region of a binary phase diagram
What is a Tie Line?
100
Intermetallic Compound of Iron and Carbon.
What is Cementite?
100
Brittle metastable iron phase supersaturated in carbon that is the product of a diffusionless transformation from austenite
What is Martensite?
100
Element added to make a carbon steel into a stainless steel.
What is Chromium?
100
Mechanical forming of a metal by heating and plastically deforming.
What is forging?
200
The maximum concentration of solute that mat be added without forming a new phase
What is the solubility limit?
200
Crystal Structure of Austenite
What is Face-Centered Cubic?
200
A plot of temperature versus the logarithm of time for a steel alloy of definite composition. Used to indicate what transformations/microstructures occur when austenite is cooled at a specific rate.
What is Continuous-Cooling Transformation Diagram (or CCT Diagram)?
200
Type of Ferrous Alloy with carbon contents greater than 2.14% carbon.
What is Cast Iron?
200
Manufacturing process where molten metal is introduced into a mold and allowed to cool to a desired net shape.
What is Casting?
300
The relative amount of a particular element in an alloy.
What is the composition?
300
Laminar Structure that forms from an Iron-Carbon alloy at the Eutectoid Composition.
What is Pearlite?
300
An austenitic transformation product that forms at temperatures between those at which pearlite and martensite could form.
What is Bainite?
300
Cementite chemically decomposes into ferrite and what carbon compound?
What is Graphite?
300
Property investigated by the Jominy End-Quench Test
What is hardenability?
400
A reaction which, upon cooling, one solid phase transforms isothermally and reversibly into two new solid phases that are intimately mixed
What is a Eutectoid reaction?
400
Proeutectoid Phase that evolves in a Hypoeutectoid Steel.
What is Proeutectoid Ferrite (or Primary Ferrite)?
400
Relatively soft microstructure that is produced by an appropriate elevated-temperature heat treatment of bainite or fine pearlite.
What is Spheroidite?
400
An alloy of copper and zinc.
What is Brass?
400
Manufacturing process where a bar of metal is forced through an orifice by compressive forces to yield a desired shape.
What is Extrusion?
500
A mathematical approach by which the relative phase amounts in a two-phase alloy at equilibrium may be computed.
What is the Lever Law (or Lever Rule)?
500
Crystal Structure of Ferrite.
What is Body-Centered Cubic?
500
Slowest austenite transformation product to form on a TTT/CCT diagram.
What is Coarse Pearlite?
500
Aircraft skins are fabricated with which type of alloy?
What is Aluminum
500
Hardenability is the measure of the rate of formation of this iron-carbon microstructure.
What is Martensite?