Thermogravimetric investigation on oxidation kinetics of complex Ti-Al alloys
作者： Oxana Ostrovskaya , Claudio Badini , Giorgio Baudana , Elisa Padovano , Sara Biamino
DOI: 10.1016/J.INTERMET.2017.09.020
关键词:
摘要: Abstract The oxidation resistance in air of Ti-48Al-2Cr-2Nb, Ti-48Al-2Nb-0.7Cr-0.3Si, Ti-43.5Al-4Nb-1Mo and Ti-47Al-2Cr-8Nb alloys was investigated the range 800–1000 °C. Specimens were machined from core bars processed by Electron Beam Melting. Oxidation tests performed TGA equipment under isothermal conditions at different temperatures. composition oxide layers XRD, SEM-EDS XPS. Layer exfoliation observed, starting temperatures for alloys. When spallation did not happen a significant extent grew according to parabolic law. kinetic rate constants activation energies calculated. These parameters allowed assess rank resistance, which can be correlated with
sci-hub.se 参考文章(30)
S. A KEKARE, P. B ASWATH, Oxidation of TiAl based intermetallics Journal of Materials Science. ,vol. 32, pp. 2485- 2499 ,(1997) , 10.1023/A:1018529829167
Trevor Sawatzky, Henry Saari, Xiao Huang, Young-Won Kim, Daejin Kim, Dongyi Seo, Jaekeun Hong, Oxidation behaviour of gamma titanium aluminides with or without protective coatings International Materials Reviews. ,vol. 59, pp. 297- 325 ,(2014) , 10.1179/1743280414Y.0000000034
Daniela Pilone, Ferdinando Felli, Andrea Brotzu, High temperature oxidation behaviour of TiAl–Cr–Nb–Mo alloys Intermetallics. ,vol. 43, pp. 131- 137 ,(2013) , 10.1016/J.INTERMET.2013.07.023
K. Przybylski, J. Prazuch, T. Brylewski, E. Durda, High Temperature Oxidation Behaviour of Tial8Nb Alloy Archives of Metallurgy and Materials. ,vol. 58, pp. 477- 480 ,(2013) , 10.2478/AMM-2013-0021
Jeffrey W Fergus, Review of the effect of alloy composition on the growth rates of scales formed during oxidation of gamma titanium aluminide alloys Materials Science and Engineering A-structural Materials Properties Microstructure and Processing. ,vol. 338, pp. 108- 125 ,(2002) , 10.1016/S0921-5093(02)00064-3
Helmut Clemens, Svea Mayer, Design, Processing, Microstructure, Properties, and Applications of Advanced Intermetallic TiAl Alloys Advanced Engineering Materials. ,vol. 15, pp. 191- 215 ,(2013) , 10.1002/ADEM.201200231
Mathieu Terner, Sara Biamino, Paolo Epicoco, Andrea Penna, Oscar Hedin, Silvia Sabbadini, Paolo Fino, Matteo Pavese, Ulf Ackelid, Paolo Gennaro, Federica Pelissero, Claudio Badini, Electron Beam Melting of High Niobium Containing TiAl Alloy: Feasibility Investigation Steel Research International. ,vol. 83, pp. 943- 949 ,(2012) , 10.1002/SRIN.201100282
Carl Wagner, Theoretical Analysis of the Diffusion Processes Determining the Oxidation Rate of Alloys Journal of The Electrochemical Society. ,vol. 99, pp. 369- 380 ,(1952) , 10.1149/1.2779605
Takeshi Izumi, Takayuki Yoshioka, Shigenari Hayashi, Toshio Narita, Oxidation behavior of sulfidation processed TiAl–2 at.%X (X=Si, Mn, Ni, Ge, Y, Zr, La, and Ta) alloys at 1173 K in air Intermetallics. ,vol. 13, pp. 694- 703 ,(2005) , 10.1016/J.INTERMET.2004.10.014
M. Mitoraj, E. Godlewska, O. Heintz, N. Geoffroy, S. Fontana, S. Chevalier, Scale composition and oxidation mechanism of the Ti–46Al–8Nb alloy in air at 700 and 800 °C Intermetallics. ,vol. 19, pp. 39- 47 ,(2011) , 10.1016/J.INTERMET.2010.09.006