Trends in the development of hardening heat treatments for titanium alloys

1977 ◽  
Vol 19 (10) ◽  
pp. 899-904 ◽  
Author(s):  
V. N. Moiseev
Keyword(s):  
Titanium Alloys ◽  
Heat Treatments

Thermal Processing of a Titanium Alloy for Aeronautical Applications

2017 ◽  
Vol 907 ◽  
pp. 214-219 ◽  
Author(s):  
Dragoș Cristian Achiței ◽  
Petrică Vizureanu ◽  
Mirabela Georgiana Minciună ◽  
Mustafa Al Bakri Abdullah Mohd ◽  
Andrei Victor Sandu
Keyword(s):  
Titanium Alloys ◽  
Biomedical Applications ◽  
Metastable Phase ◽  
Hardness Measurement ◽  
Heat Treatments ◽  
Low Weight ◽  
Experimental Researches ◽  
Hardening Heat Treatment ◽  
Quenching And Tempering ◽  
Electronic Microscope

The titanium alloys are used in aeronautical applications (up to 75% of titanium alloys), reinforcements, biomedical applications, army industry, because of a high traction resistance, low weight, excellent corrosion resistance and capacity to resist at extreme temperatures. However, some titanium applications are restricted by the small hardness, high friction coefficient and low usage resistance. The paper shows the experimental researches made on Ti-6Al-4V alloy, subjected to quenching and tempering heat treatments. The hardening heat treatment of titanium alloys with α+β structure consists in stabilization phenomenon of β solid solution dissolved in α’ and α’’ metastable phase. After quenching and tempering heat treatments, are obtained good mechanical properties in biphasic alloys, maintaining the plasticity characteristics in reasonable limits. The efficiency evaluation of heat treatments was realized through micro-hardness measurement and structure analyses on electronic microscope.

Surface modification by alkali and heat treatments in titanium alloys

2002 ◽  
Vol 61 (3) ◽  
pp. 466-473 ◽  
Author(s):  
Baek-Hee Lee ◽  
Young Do Kim ◽  
Ji Hoon Shin ◽  
Kyu Hwan Lee
Keyword(s):  
Surface Modification ◽  
Titanium Alloys ◽  
Heat Treatments

scholarly journals New Nomenclatures for Heat Treatments of Additively Manufactured Titanium Alloys

JOM ◽  
2017 ◽  
Vol 69 (7) ◽  
pp. 1221-1227 ◽  
Author(s):  
Andrew H. Baker ◽  
Peter C. Collins ◽  
James C. Williams
Keyword(s):  
Titanium Alloys ◽  
Heat Treatments

Modeling of β→α Transformation in Complex Titanium Alloys

2011 ◽  
Vol 172-174 ◽  
pp. 1044-1049 ◽  
Author(s):  
Paolo Di Napoli ◽  
Benoît Appolaire ◽  
Elisabeth Aeby Gautier ◽  
Adeline Bénéteau
Keyword(s):  
Titanium Alloys ◽  
Phase Field ◽  
Nucleation And Growth ◽  
Heat Treatments ◽  
Β Phase ◽  
Growth Laws ◽  
Kinetics Of

A model has been developed which is able to predict the kinetics of β → α transformation in industrial multicomponent titanium alloys during complex heat treatments. It isbased on (i) analytical nucleation and growth laws based on simple geometric representationsof the di erent morphologies commonly observed in these alloys; (ii) the assumption of localequilibrium at interfaces, handled within the CalPhaD framework; (iii) averaged solute balancesin each morphology. The potentialities of the model will be demonstrated on the Ti17 industrialalloy upon isothermal holdings and cooling from the β phase field.

Heat Treatments Influence on Corrosion Behaviour of Some Metallic Biomaterials Potentially Used in Metal-Ceramic Prosthesis

2013 ◽  
Vol 587 ◽  
pp. 293-296
Author(s):  
Nicolae Ghiban ◽  
Brandusa Ghiban ◽  
Nicolae Şerban ◽  
Alexandru Ghiban
Keyword(s):  
Titanium Alloys ◽  
Corrosion Behaviour ◽  
Base Alloy ◽  
Ringer Solution ◽  
Heat Treatments ◽  
Infusion Solution ◽  
Metallic Biomaterials ◽  
Alloy Type ◽  
Cobalt Base Alloy ◽  
Cobalt Base

The present paper put in evidence the influence of applying different heat treatments on some metallic materials such as cobalt and titanium alloys, usualy used for medical applications. The alloys were cobalt base alloy type CoCrMo (22%Cr, 6%Mo, rest Co), in nontreated state, quenching at 1100°C /1h/aer, quenching at 1100°C /1h/air+ sensiblizing at 550°/4h/ air, 600°/4h/air and/or 650°C/4h/air and titanium base alloys - alloy TiMo0.3Ni0,7 (0.23%Mo, 0.72%Ni, Ti rest), alloy TiAl5Fe2V2Mo1,5(1.52%Mo, 5.15%Al, 2.56%Fe, 2.35%V, Ti rest), each of them in non treated state, annealing at 1050°C/1h/air and annealing at 850°C/1h/air. Corrosion tests were made at potentiostat-galvanostat AUTOLAB, in Ringer solution (for both alloys) and NaCl infusion solution (only for cobalt base alloy) by drawing the polarization curves. Our conclusion is that by applying correct and proper heat treatments to both at cobalt alloys and in titanium alloys there is an improving of the corrosion resistance.

New heat treatments for titanium alloys

1977 ◽  
Vol 19 (8) ◽  
pp. 691-695
Author(s):  
B. A. Kolachev
Keyword(s):  
Titanium Alloys ◽  
Heat Treatments
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