MECHANISM FOR OXYGEN ENHANCED CRACK GROWTH IN INCONEL 718
作者： C.F Miller , G.W Simmons , R.P Wei
DOI: 10.1016/S1359-6462(01)00933-2
关键词: Niobium 、 Grain boundary 、 Materials science 、 Metallurgy 、 Oxygen 、 Inconel 、 Fracture mechanics 、 Superalloy 、 X-ray photoelectron spectroscopy 、 Carbide
摘要: Department of Mechanical Engineering and Mechanics, Zettlemoyer Center forSurface Studies, Lehigh University, Bethlehem, PA 18015, USA(Received September 25, 2000)(Accepted in revised form January 11, 2001)Keywords: Oxygen enhanced crack growth; X-ray photoelectron spectroscopy (XPS); Niobium;Crack growth mechanism; Ni base alloyIntroductionNickel based superalloys are used extensively high temperature applications, for example, turbinedisks jet engines. Since turbine discs operate air at 700 to 973 K, these alloys have receivedconsiderable attention with respect their sensitivity environmentally growth(EECG). Previous studies shown that oxygen increased the rates niobiumcontaining (such as Inconel 718, Rene-95 and3750) temperatures (.800K) by up 4.5orders magnitude over those observed an inert environment (1–7). Several mechanisms beensuggested this enhancement which include: (a) oxidation metallic carbides orcarbon grain boundaries pressures CO
elsevier.com
researchgate.net 
sci-hub.se 参考文章(16)
M. Stucke, T. Nicholas, M. Khobaib, B. Majumdar, ENVIRONMENTAL ASPECTS IN CREEP CRACK GROWTH IN A NICKEL BASE SUPERALLOY Fracture 84#R##N#Proceedings of the 6th International Conference on Fracture (ICF6), New Delhi, India, 4–10 December 1984. pp. 3967- 3975 ,(1984) , 10.1016/B978-1-4832-8440-8.50418-X
R.H. Bricknell, D.A. Woodford, The mechanism of cavity formation during high temperature oxidation of nickel Acta Metallurgica. ,vol. 30, pp. 257- 264 ,(1982) , 10.1016/0001-6160(82)90064-5
M. Gao, D.J. Dwyer, R.P. Wei, Niobium enrichment and environmental enhancement of creep crack growth in nickel-base superalloys Scripta Metallurgica Et Materialia. ,vol. 32, pp. 1169- 1174 ,(1995) , 10.1016/0956-716X(95)00120-K
K. R. Bain, R. M. Pelloux, Effect of Environment on Creep Crack Growth in PM/HIP René-95 Metallurgical Transactions A. ,vol. 15, pp. 381- 388 ,(1984) , 10.1007/BF02645123
D.A. Woodford, R.H. Bricknell, Gas phase embrittlement and the nucleation of creep cavities Scripta Metallurgica. ,vol. 23, pp. 599- 601 ,(1989) , 10.1016/0036-9748(89)90458-4
F. Gabrielli, R. M. Pelloux, Effect of Environment on Fatigue and Creep Crack Growth in Inconel X-750 at Elevated Temperature Metallurgical Transactions A. ,vol. 13, pp. 1083- 1090 ,(1982) , 10.1007/BF02643406
Christopher F Miller, Gary W Simmons, Robert P Wei, High temperature oxidation of Nb, NbC and Ni3Nb and oxygen enhanced crack growth Scripta Materialia. ,vol. 42, pp. 227- 232 ,(2000) , 10.1016/S1359-6462(99)00336-X
S. FLOREEN, R. H. KANE, AN INVESTIGATION OF THE CREEP‐FATIGUE‐ENVIRONMENT INTERACTION IN A Ni‐BASE SUPERALLOY Fatigue & Fracture of Engineering Materials & Structures. ,vol. 2, pp. 401- 412 ,(1979) , 10.1111/J.1460-2695.1979.TB01097.X
K. Sadananda, P. Shahinian, The effect of environment on the creep crack growth behavior several structural alloys Materials Science and Engineering. ,vol. 43, pp. 159- 168 ,(1980) , 10.1016/0025-5416(80)90143-3
X.J. Pang, D.J. Dwyer, M. Gao, P. Valerio, R.P. Wei, Surface enrichment and grain boundary segregation of niobium in inconel 718 single- and poly-crystals Scripta Metallurgica Et Materialia. ,vol. 31, pp. 345- 350 ,(1994) , 10.1016/0956-716X(94)90294-1