Abstract
‘In this study, the fracture toughness and elevated-temperature tensile and fatigue behavior of discontinuously reinforced aluminum (DRA) were examined. The effects of heat treatment and specimen thickness on fracture toughness were studied in a 7093/SiCp composite. The toughness of the DRA was lowest in the peak-aged condition, but increased considerably in the overaged condition. The highest toughness was obtained at a critical value of specimen thickness; this critical value was used to fabricate a laminated composite consisting of alternating layers of DRA and unreinforced alloy. Elevated-temperature tensile and fatigue behaviors were investigated in a 2080-T6/SiCp composite at different volume fractions and particle sizes. Increasing reinforcement volume fractions resulted in increases in tensile and fatigue strength. Exposure tests for 300 h at 150°C produced no significant reduction in ultimate tensile strength or yield strength, indicating good thermal stability of the 2080 matrix.
Similar content being viewed by others
References
T.W. Clyne and P.J. Withers, An Introduction to Metal Matrix Composites (New York: Cambridge University Press, 1993).
K.K. Chawla, Composite Materials—Science and Engineering (New York: Springer-Verlag, 1997).
M.J. Kozack et al., Fundamentals of Metal Matrix Composites, ed. S. Suresh, A. Mortensen, and A. Needleman (Stoneham, MA: Butterworth-Heinemann, 1993), pp. 297–326.
W.H. Hunt, Jr., T.M. Osman, and J.J. Lewandowski, JOM, 30 (1993), pp. 30–35.
J. Llorca et al., Metall. Trans. A, 24 A (1993), pp. 1575–1588.
J.J. Lewandowski, C. Liu, and W.H. Hunt, Jr., Mater. Sci. Eng. A, 107 A (1989), pp. 241–255.
J.J. Lewandowski and P.M. Singh, Intrinsic and Extrinsic Fracture Mechanisms in Inorganic Composite Systems, ed. J.J. Lewandowski and W.H. Hount, Jr. (Warrendale, PA: TMS, 1995), pp. 129–146.
A.B. Pandey, B.S. Majumdar, and D.B. Miracle, Metall. and Mater. Trans. A. (in press).
B.S. Majumdar and A.B. Pandey, Metall. and Mater. Trans. A (in press).
I. Dutta et al., Metall. Mater. Trans. A (submitted 1998).
A.B. Pandey, B.S. Majumdar, and D.B. Miracle, Mater. Sci. Eng. A, 259 A (1999), pp. 296–307.
A.B. Pandey, B.S. Majumdar, D.B. Miracle, unpublished work.
D.R. Lesuer et al., Intern. Metals Rev., 41 (1996), pp. 169–197.
J.E. Allison and J.W. Jones, Fundamentals of Metal Matrix Composites, ed. S. Suresh, A. Mortensen, and A. Needleman (Stoneham, MA: Butterworth Heinemann, 1993), pp. 269–294.
J.E. Allison, L.C. Davis, and J.W. Jones, Composites Engineering Handbook (New York: Marcel Dekker, 1997), p. 941.
J. Hall, J.W. Jones, and A. Sachdev, Mater. Sci. Eng. A, 183 A (1994), pp. 69–80.
N.L. Han, Z.G. Wang, and L. Sun, Scripta Met. Mater., 33 (1995), pp. 781–788.
A.R. Vaidya and J.J. Lewandowski, Mater. Sci. Eng. A, 220 A (1996), pp. 85–92.
N. Chawla et al., Metall. & Mater. Trans. A. (in press).
N. Chawla et al., Metall. Mater. Trans. A, 29 A (1998), pp. 2843–2854.
W.H. Hunt, Jr., C.R. Cook, and R.R. Sawtell, Proc. of SAE International, SAE paper 910834 (Warrendale, PA: SAE, 1991).
T.G. Nieh, D.R. Lesuer, and C.K. Syn, Scripta Metall. et Mater., 32 (1995), pp. 707–712.
H. Ishii et al., Asian Pacific Conf. on Fracture and Strength (1993), p. 47.
G.M. Vyletel, D.C. VanAken, and J.E. Allison, Metall. Trans. A, 26 A (1995), pp. 3155–3162.
R.J. Arsenault and S.B. Wu, Scripta Metall, 22 (1988), pp. 767–772.
V.C. Nardone and K.M. Prewo, Scripta Metall. 20 (1986), pp. 43–48.
G.T. Hahn and A.R. Rosenfield, Metall. Trans. A, 6A (1975), pp. 653–670.
A.B. Pandey, B.S. Majumdar, and D.B. Miracle, Metall. and Mater. Trans. A, 29 A (1998), pp. 1237–1243.
N. Chawla et al., Metall. Mater. Trans. A (in press).
Author information
Authors and Affiliations
Additional information
For more information, contact A.B. Pandey, Air Force Research Laboratory, Materials and Manufacturing Directorate, Wright-Patterson AFB, Ohio 45433; (937) 255-1320; fax (937) 255-3007; e-mail awadh.pandey@ml.afrl.af.mil.
Rights and permissions
About this article
Cite this article
Pandey, A.B., Chawla, N. The fracture toughness and fatigue behavior of DRA. JOM 51, 69–72 (1999). https://doi.org/10.1007/s11837-999-0228-y
Issue Date:
DOI: https://doi.org/10.1007/s11837-999-0228-y