Effect of boron concentration and grain size on weld heat affected zone microfissuring in Inconel 718 base superalloys
作者： H. Guo , M.C. Chaturvedi , N.L. Richards
DOI: 10.1179/136217199101537761
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摘要: AbstractMicrofissuring in the heat affected zone (HAZ) around electron beam (EB) welds was studied two Inconel 718 based superalloys containing minimum possible concentrations of C, S and P, 11 43 wt-ppm B. The microfissuring susceptibility evaluated by measuring microcracks formed HAZs EB examining hot ductility behaviour material. Bead on plate type welding, cooling tests a Gleeble 1500 thermomechanical simulator were performed alloys with different grain sizes. results crack measurements welded samples correlated very well each other. Using both techniques it observed that HAZ increased an increase B concentration size. effect attributed to its segregation boundaries, which resulted reduction melting point boundary T...
sci-hub.se 参考文章(9)
R. G. Thompson, D. E. Mayo, B. Radhakrishnan, The relationship between carbon content, microstructure, and intergranular liquation cracking in cast nickel alloy 718 Metallurgical Transactions A. ,vol. 22, pp. 557- 567 ,(1991) , 10.1007/BF02656823
R. Nakkalil, N.L. Richards, M.C. Chaturvedi, The influence of solidification mode on heat affected zone microfissuring in a nickel-iron base superalloy Acta Metallurgica Et Materialia. ,vol. 41, pp. 3381- 3392 ,(1993) , 10.1016/0956-7151(93)90218-H
T. Simonson, F. Dénoyer, R. Currat, C. Vettier, Structure of the modulation in thiourea. II. Structure refinement Journal de Physique. ,vol. 49, pp. 471- 480 ,(1988) , 10.1051/JPHYS:01988004903047100
W.A. Baeslack, D.E. Nelson, Morphology of weld heat-affected zone liquation in cast alloy 718 Metallography. ,vol. 19, pp. 371- 379 ,(1986) , 10.1016/0026-0800(86)90024-8
Y.G. Liu, R. Nakkalil, N.L. Richards, M.C. Chaturvedi, The effect of initial microstructure on heat-affected zone microfissuring in Incoloy 903 Materials Science and Engineering: A. ,vol. 202, pp. 179- 187 ,(1995) , 10.1016/0921-5093(95)09804-6
N. L. Richards, R. Nakkalil, M. C. Chaturvedi, The influence of electron-beam welding parameters on heat-affected-zone microfissuring in INCOLOY 903 Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 25, pp. 1733- 1745 ,(1994) , 10.1007/BF02668538
R. Vincent, Precipitation around welds in the nickel-base superalloy, Inconel 718 Acta Metallurgica. ,vol. 33, pp. 1205- 1216 ,(1985) , 10.1016/0001-6160(85)90231-7
Xiao Huang, M.C. Chaturvedi, N.L. Richards, J. Jackman, The effect of grain boundary segregation of boron in cast alloy 718 on HAZ microfissuring: A sims analysis Acta Materialia. ,vol. 45, pp. 3095- 3107 ,(1997) , 10.1016/S1359-6454(97)00017-7
Xiao Huang, M. C. Chaturvedi, N. L. Richards, Effect of homogenization heat treatment on the microstructure and heat- affected zone microfissuring in welded cast alloy 718 Metallurgical and Materials Transactions A-physical Metallurgy and Materials Science. ,vol. 27, pp. 785- 790 ,(1996) , 10.1007/BF02648966