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JEAN PAUL PADILLA FABIANCOURSE:PHASE DIAGRAMSCODE: 131 60 137EAP. METALLURGICAL ENGINEERING
TITANIUM AND TITANIUM ALLOYS
TITANIUM The method for its production was discovered by KROLL.
TiCl4 (g) + 2Mg Ti + 2MgCl2
TITANIUM
Pure titanium undergoes an allotropic transformationfrom hexagonal close-packed (HCP) alpha titaniumto body-centered cubic (BCC) beta titanium as its temperature is raised through 882 °C (1620 °F).
The melting point of pure titanium is 1668 °C (3034 °F).
Density of 4.51 gr/cc., Steel 7.86 – 8 gr/cc
TITANIUM COMMERCIALLY PURE
LOW MECHANICAL PROPERTIES HIGH DUCTILITY FOR CORROSIVE SUBSTANCES
ASTM SB 337
TITANIUM + STEEL SHEETS
TITANIUM COMMERCIALLY PURE
EFFECT OF PHASE STABILISERS
ALPHA ALLOYS
Alpha phase is stabilized by Aluminium Oxigen CarbonGeneral properties:Good weldability and ductil weldRetention of strength at HIGH TEMPERATURES
COMMON ALLOY : Ti - Al
ALPHA BETA ALLOY
It’s a mixture of apha and beta stabilisers. GENERAL PROPERTIES: More resistance than ONLY ALPHA ALLOYS ENDURECIBLE BY HEAT TREATMENT
Weld not ductile
BETA ALLOY Alpha phase is stabilized by Iron Chromium Vanadium Molybdenum Copper Manganese Nickel CobaltBUENA RESISTENCIAPUEDE SER TEMPLADA
BETA ALLOYTi -V
MECHANICAL PROPERTIES OF SOME TITANIUM ALLOYS
COMPARISON IN MECHANICAL PROPERTIES
THE MOST USED ALLOYTI- 6Al – 4V
TITANIUM IN HOT ISOSTATIC PRESS
INCONVENIENT OF TITANIUM
THANKS!!!