Characterization of Discontinuous Coarsening Reaction Products in INCONEL® Alloy 740H® Fusion Welds
作者： Daniel H. Bechetti , John N. Dupont , Masashi Watanabe , John J. de Barbadillo
DOI: 10.1007/S11661-016-3952-2
关键词: Electron microscope 、 Inconel 、 Metallurgy 、 Alloy 、 Characterization (materials science) 、 Materials science 、 Electron backscatter diffraction 、 Grain boundary 、 Scanning transmission electron microscopy 、 Scanning electron microscope
摘要: Characterization of γ′ coarsened zones (CZs) in alloy 740H fusion welds via a variety electron microscopy techniques was conducted. The effects solute partitioning during nonequilibrium solidification on the amount strengthening precipitates along grain boundaries were evaluated electron-probe microanalysis and scanning microscopy. Electron backscatter diffraction used to present evidence for preferential growth CZs toward regions lower content, even if that direction increases boundary area. Scanning image analysis quantify propensity develop certain segments boundaries, as governed by local variations content. transmission with X-ray energy-dispersive spectrometry (XEDS) assess compositions matrix precipitate phases within segregation alloying components reaction front. Thermodynamic kinetic modeling compare calculated experimental compositions. work presented here provides new insight into progression discontinuous coarsening (DC) complex engineering alloy.
springer.com
harvard.edu
sci-hub.se 参考文章(31)
R. Monzen, Misorientation dependence of discontinuous precipitation in Cu-Be alloy bicrystals Journal of Materials Science. ,vol. 35, pp. 5839- 5843 ,(2000) , 10.1023/A:1026700222794
John C. Lippold, Samuel D. Kiser, John N. DuPont, Welding Metallurgy and Weldability of Nickel-Base Alloys ,(2009)
Kenneth E. Easterling, David A. Porter, Phase transformations in metals and alloys ,(1981)
S Hirth, G Gottstein, Misorientation effects on discontinuous precipitation in Al–Ag–Ga Acta Materialia. ,vol. 46, pp. 3975- 3984 ,(1998) , 10.1016/S1359-6454(98)00061-5
Mats Hillert, On the driving force for diffusion induced grain boundary migration Scripta Metallurgica. ,vol. 17, pp. 237- 240 ,(1983) , 10.1016/0036-9748(83)90105-9
A. A. Tavassoli, G. Colombe, Mechanical and microstructural properties of alloy 800 Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 9, pp. 1203- 1211 ,(1978) , 10.1007/BF02652243
K.N Tu, D Turnbull, Morphology of cellular precipitation of tin from lead-tin bicrystals-ii Acta Metallurgica. ,vol. 15, pp. 369- 376 ,(1967) , 10.1016/0001-6160(67)90007-7
W.W Mullins, Magnetically induced grain-boundary motion in bismuth Acta Metallurgica. ,vol. 4, pp. 421- 432 ,(1956) , 10.1016/0001-6160(56)90033-5
C.Y. Ma, E. Rabkin, W. Gust, S.E. Hsu, On the kinetic behavior and driving force of diffusion induced grain boundary migration Acta Metallurgica Et Materialia. ,vol. 43, pp. 3113- 3124 ,(1995) , 10.1016/0956-7151(95)00011-J
A. W. Funkenbusch, T. A. Stephenson, G. McCarthy, H. Fraser, Driving force for discontinuous coarsening in a Ni-Al-Mo base superalloy Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 16, pp. 11- 16 ,(1985) , 10.1007/BF02656706