Results 1 to 10 of about 134,659 (187)

Microstructure evolution of HP40-Nb alloys during aging under air at 1000 °C [PDF]

, 2009
Two as-cast HP 40 alloys provided by different manufacturers were aged at 1000 °C under laboratory air. They had the same as-cast microstructure consisting of austenite dendrites delineated by a network of eutectic Nb-rich MC and Cr-rich M7C3 carbides ...
Andrieu, Eric, Furtado, Jader, Lacaze, Jacques, Poquillon, Dominique, Voicu, Raluca   +4 more
core   +2 more sources

Silicon Carbide Platelet/Silicon Carbide Composites [PDF]

Journal of the American Ceramic Society, 1995
α‐silicon carbide platelet/β‐silicon carbide composites have been produced in which the individual platelets were coated with an aluminum oxide layer. Hot‐pressed composites showed a fracture toughness as high as 7.2 MPa·m 1/2 .
Mitchell, T., Jonghe, L.C. De, MoberlyChan, W.J., Ritchie, R.O.   +3 more
openaire   +2 more sources

Carbides and Nitrides of Zirconium and Hafnium. [PDF]

, 2019
Among transition metal carbides and nitrides, zirconium, and hafnium compounds are the most stable and have the highest melting temperatures. Here we review published data on phases and phase equilibria in Hf-Zr-C-N-O system, from experiment and ab ...
Hong, Qi-Jun, Navrotsky, Alexandra, Ushakov, Sergey V, van de Walle, Axel   +3 more
core   +1 more source

A tight-binding potential for atomistic simulations of carbon interacting with transition metals: Application to the Ni-C system [PDF]

, 2008
We present a tight-binding potential for transition metals, carbon, and transition metal carbides, which has been optimized through a systematic fitting procedure.
A. Cottrell, C. Bichara, Ch. Kittel, Ch.-H. de Novion, D. G. Pettifor, F. Ducastelle, F. Ducastelle, F. Ducastelle, H. Amara, H. J. Grabke, J. Friedel, J.-M. Roussel, J.-P. Gaspard, J.-P. Landesman, L. E. Toth, M. I. Heggie, N. Eustathopoulos, O. K. Andersen, P. Turchi, V. A. Gubanov, W. H. Press   +20 more
core   +6 more sources

On Measurement and Interpretation of Toughness Behaviour of Carbide Tools [PDF]

, 1981
The actual significance of any definition of toughness behaviour of carbide tools depends on the existence of an interrelation between the quality as defined and the occurrence of chipping and premature failure in cutting.
Kals, H.J.J.
core   +2 more sources

Effect of Silicon Content on Carbide Precipitation and Low-Temperature Toughness of Pressure Vessel Steels [PDF]

, 2017
Cr – Mn – Mo – Ni pressure vessel steels containing 0.54 and 1.55% Si are studied. Metallographic and fractographic analyses of the steels after tempering at 650 and 700°C are performed.
A Gustafson, A. A. Shirzadi, CA Hippsley, CJ Moss, D Delagnes, I. G. Rodionova, J Yu, J. A. Qiu, JA Qiu, JH Bulloch, JV Bee, K Maruyama, K. M. Wu, KDH Bhadeshia, L. H. Ruan, NS Cheruvu, P Bowen, R Pilkington, RA Mesquita, RL Bodnar, S Ortner, SM Bruemmer, T Iwadate, WM Garrison, WS Owen, WS Owen, Y Nishizaka, Z Qu   +27 more
core   +1 more source

Ab initio explanation of disorder and off-stoichiometry in Fe-Mn-Al-C kappa carbides [PDF]

, 2017
Carbides play a central role for the strength and ductility in many materials. Simulating the impact of these precipitates on the mechanical performance requires the knowledge about their atomic configuration.
Dey, P., Dutta, B., Friák, M., Herbig, M., Hickel, T., Nazarov, R., Neugebauer, J., Raabe, D., Yao, M. J.   +8 more
core   +2 more sources

Neutron Diffraction Measurements and First Principles Study of Thermal Motion of Atoms in Select M_{n+1}AX_n and Binary MX Transition Metal Carbide Phases

, 2012
Herein, we compare the thermal vibrations of atoms in select ternary carbides with the formula Mn+1AXn ("MAX phases," M = Ti, Cr; A = Al, Si, Ge; X = C, N) as determined from first principles phonon calculations to those obtained from high-temperature ...
Barsoum, Michel W., Chaput, Laurent, Hug, Gilles, Hultman, Lars, Lane, Nina J., Togo, Atsushi, Vogel, Sven C.   +6 more
core   +1 more source

On the spheroidized carbide dissolution and elemental partitioning in a high carbon bearing steel 100Cr6

, 2013
We report on the characterization of high carbon bearing steel 100Cr6 using electron microscopy and atom probe tomography in combination with multi-component diffusion simulations (DICTRA).
Bleck, Wolfgang, Choi, Pyuck-Pa, Inden, Gerhard, Prahl, Ulrich, Raabe, Dierk, Song, Wenwen   +5 more
core   +1 more source

Steam reforming on transition-metal carbides from density-functional theory [PDF]

, 2009
A screening study of the steam reforming reaction (CH_4 + H_2O -> CO + 3H_2) on early transition-metal carbides (TMC's) is performed by means of density-functional theory calculations. The set of considered surfaces includes the alpha-Mo_2C(100) surfaces,
A Férnandez Guillermet, A Vojvodic, A Vojvodic, A Vojvodic, Aleksandra Vojvodic, AM Brandshaw, APE York, B Hammer, C Oshima, C Pistonesi, C Ruberto, C Ruberto, C Ruberto, C-L Fu, E Parthe, EL Haase, F Okuyama, F Viñes, F Viñes, F Viñes, G Jones, H Tominaga, HS Bengaard, J Dubois, J Kitchin, J Lu, J Ren, J Ren, J Rundgren, J Wood, JB Claridge, JK Nørskov, JR Rostrup-Nielsen, JS Lee, JS Lee, K Nakamura, L Volpe, M Aono, P Liu, P Liu, RB Levy, S Helveg, S Otani, SV Didziulis, TP St. Clair, TP St. Clair, TY Velikanova, YF Zhang   +47 more
core   +2 more sources