Test 2. Chapter 9 Flashcards
components:?
the elements or compounds which are present in the mixture
Phases:?
the physically and chemically distinct material regions that result
What information can we get from a phase diagram?
- # and types of phases
- amount of different phases in wt%
- compositions in each phases in wt%
- Phase evolution with temperature
solutions=?
solid solutions, single phase
mixtures=?
more than one phase
solubility limit?
max concentration for which only a single phase solution occurs
temperature and concentration change ____________
number of phases
if we know T and C, then we know
the number and type of phases present
tie line
connects the phases in equilibrium with each other-essentially and isotherm
eutectic
eutectoid
peritectic
connects the phases in equilibrium with each other-essentially and isotherm
solid phase in equation with two solid phases
liquid + solid 1 –> solid 2
PHASE DIAGRAM are useful tools to determine:
– the number and types of phases
– the wt% of each phase,
–and the composition of each phase
for a given T and composition of the system
Alloying to produce a solid a solution usually………..
- increasing the tensile strength (TS)
- - decrease the ductility
binary ______ and binary ____________ allow for a range of microstructures
eutectics
eutectoids