 |
Pure titanium has
hexagonal closest packed lattice (
phase) in the room temperature condition. However it can
be changed to body entered cubic lattice in the condition
of about 885
as allotropic transformation. This temperature is called
transus, whereasadding alloy elements to pure titanium,
transus can be affected by the element type or combination.
Sometime coexisting temperature range of
and
phases appears. |
Aluminum
equivalents=Al+Zr/6+Sn/3 (O,N,C)
Molybdenum equivalents=Mo+V/1.5+Nb/3.6+2.5Fe+1.25Cr+1.25Ni+1.7Co |
 Good
heat resistance |
 |
Single phase alloy made by solid
solution of
stabilizing element and neutral element
It is stable in the high and low temperature condition,
while it also has a ductility property in liquid helium
temperature and a good creep resistance in high temperature
condition.
|
| Good
balance |
 |
+
alloy titanium, represented by the Ti-6Al-4V alloy, occupies
about 70% of alloy titanium. Good balanced property of
strength, ductility and toughness leads it to able to
be processed to various shapes such as forging products
and rolled products. |
High
strength High
toughness |
 |
titanium, which consists of metastable body centered cubic
lattice, has good cold workable property and high strength
property by aging treatment. We have developed our own
alloy titanium which has better cold workable property. |
*Sumitomo Metals's developed alloy titanium
|
