Tungsten segregation in α2 + γ titanium aluminides
作者： D.J. Larson , C.T. Liu , M.K. Miller
DOI: 10.1016/S0966-9795(97)00026-5
关键词:
摘要: Atom probe field ion microscopy investigations of α2 + γ Ti-47%Al-2%Cr-l.8%Nb doped with 0.15% B and 0.2% W indicate that the tungsten segregates to both γγ α2γ interfaces. The interfacial coverage at a specific interface was estimated be 2.3% which yields segregation enhancement factor ~ 14. Initial results give no appreciable evidence boron interphase Interfacial supports previous observation additions stabilize lamellae against dissolution during aging.
elsevier.com
sci-hub.se 参考文章(20)
G. D. W. Smith, M. K. Miller, Atom Probe Microanalysis: Principles and Applications to Materials Problems ,(1989)
H. Inui, K. Kishida, M. Kobayashi, M. Yomaguchi, M. Kawasaki, K. Ibe, Compositional variations at TiAl-TiAl lamellar boundaries in binary and some ternary polysynthetically twinned Ti-Al Philosophical Magazine. ,vol. 74, pp. 451- 464 ,(1996) , 10.1080/01418619608242154
P.J. Maziasz, J.L. Wright, D.S. Easton, C.T. Liu, J.H. Schneibel, Tensile properties and fracture toughness of TiAl alloys with controlled microstructures Intermetallics. ,vol. 4, pp. 429- 440 ,(1996) , 10.1016/0966-9795(96)00047-7
D.W. McKee, S.C. Huang, The oxidation behavior of gamma-titanium aluminide alloys under thermal cycling conditions Corrosion Science. ,vol. 33, pp. 1899- 1914 ,(1992) , 10.1016/0010-938X(92)90192-6
A. Nérac-Partaix, A. Menand, Atom probe analysis of oxygen in ternary TiAl alloys Scripta Materialia. ,vol. 35, pp. 199- 203 ,(1996) , 10.1016/1359-6462(96)00125-X
R.V. Ramanujan, P.J. Maziasz, C.T. Liu, The thermal stability of the microstructure of γ-based titanium aluminides Acta Materialia. ,vol. 44, pp. 2611- 2642 ,(1996) , 10.1016/1359-6454(95)00402-5
A. Menand, A. Huguet, A. Nérac-Partaix, Interstitial solubility in γ and α2 phases of TiAl-based alloys Acta Materialia. ,vol. 44, pp. 4729- 4737 ,(1996) , 10.1016/S1359-6454(96)00111-5
M. Saga, R. Uemori, M. Tanino, H. Morikawa, A combined AP-FIM/HREM approach to the characterization of microstructure in a Mn-added TiAl intermetallic compound Surface Science. ,vol. 246, pp. 231- 237 ,(1991) , 10.1016/0039-6028(91)90420-W
P.J Maziasz, R.V Ramanujan, C.T Liu, J.L Wright, Effects of B and W alloying additions on the formation and stability of lamellar structures in two-phase γ-TiAl Intermetallics. ,vol. 5, pp. 83- 95 ,(1997) , 10.1016/S0966-9795(96)00070-2
Young-Won Kim, Gamma titanium aluminides JOM. ,vol. 47, pp. 38- 38 ,(1995) , 10.1007/BF03221228