Journal of the American Ceramic Society-Morscher et al Vol 87. No Sic BN 200mm 200mm Fig. 11. TEM micrographs(top)and carbon map(bottom, labeled"C )for SYL-iBN SiC/SiC composites showing(a)inside-debonding composite and(b) outside-debonding composite sufficient to cause interface debonding during cooldown after L.U.J.T. Ogbuji,“ ive Mode of Oxidation Degradation in a SiC-SiC The residual stress state in SiC fiber/MI caused by the infiltration of molten Si in processing. The volume expansion of the si IAG.N. Morscher and J. L. Eldridge, " Constituent Effects tress-Strain liquid to solid phase transformation coupled with a lower thermal expansion coefficient for Si compared with SiC results in residual on Fracture. Elsevier Science, Oxford, U. K in press ompression in the matrix of SiC fiber/MI matrix composites. For 1M. Steen and】.L.val this reason, outside debonding is expected to be easier to tailor ASTM Special Technical Publication, VoL. STP 1309. Edited by M. G al or MI composites compared with other Sic fiber. SiC matrix American Society for Testing and Materials, West Conshohocken, PA ons Composites Under Quasi-Static and Cyclic Loading, " Acta Metall. Mater. 41 141 1269-8l01993) References w. A. Curtin. B. K, Ahn, and N. Takeda, " Modeling Brittle and 46[0]3409-20(1998) G. N. Morscher, "" Modal Acoustic Emission Source Determination in JAm, Ceran,So,83|6l1441-4902000 Carbide Matrix Composites -N, S. Jacobson, G, N. Morscher. D. R. Bryant, and R. E. Tressler. Nondestructive evaluation, t Temperature Oxidation of Boron Nitride: Il, Boron Nitride Layers in Composites. Thompson and D. E. Chimet rican Institute of Physics. Melville, NY. 2000 JAm, Ceram.Soc,82|6l1473-82(99) Coatings for Ceramic Matrix B, K. Ahn and w. A Curtin, "Strain and Hysteresis by Stochastic Matrix Cracking Composites, "Ceram. Eng. Sci. Proc 13 [7-81 23-56(1992) 2G. N. Morscher and J. Hurst, "Stress-Rupture and Stress-R ature, "Ceram. Eng. Sci. Proc:, 22 [31 539-46(2001 2G. N Morscher and I. D. Cawley. "Intermediate Temperature Strength Degr OH,1995 Rebillat, Lamon, R, Naslain, E. Lara-Curzio m, K. Ferber, and T, M. Besmann and Y, L. Chen " Tensile Behavior of Itilayered Interphases in SiC/SiC Chemical-Vap erfaces, J. Am. Fibe ram. Eng, Sci. Prm,, in pi 2L. U J. T Ogbuji, D. R. Wheeler, and T.R. McCue,"Process-Induced Carbon Multilayered Interphases by VI, "Key Eng- Sub-Layer in SiC/BN dater,164-165,164-65 Eng.Sci.Proc2213]379-87(201 2W. A, Curtin, "Theory of Mechanical Properties of Ceramic-Matrix Compos yC-SiC) Interphases at High Tempe ites, "J. Am. Ceram. Soc., 74 [11] 2837-45(199 aler,164-165.249-52(1999) abdeljalil and w. A. Curtin, "Strength and Reliability of Fiber-Reinforced Bertrand, R. Pailler, and J. Lamon. " Influence of Strong Composites: Localized Load-sharing and Associated Size Effects. " int. J, Solids Interfaces on the Mechanical Behavior and Lifetime of Minicomposites, J. Am. 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