Abstract
The microstructural responses to monotonic and cyclic compressive loading of three WC-(Co,Ni) alloys have been characterized and measured by high voltage transmission electron microscopy and neutron diffraction. A base alloy comprising WC-17 wt pct Co was prepared and evaluated, along with two alloys in which the binder composition was altered by replacing 15 pct and 30 pct of the total cobalt by nickel. Results are presented for strains of 0, 0.75, and 5.0 pct, and for two fatigue stress levels, both at 0.5 million cycles. Predominant binder-deformation mechanisms were observed to shift with increasing Ni content from the fcc-hcp martensitic transformation to slip plus twinning over the composition range studied. In the base alloy, 44.5 vol pct of the binder had transformed at the highest strain level, while only 11.4 pct transformation occurred at the same strain in the 30 pct Ni-binder alloy. The shift in binder plasticity mechanisms and the corresponding changes in composite stressstrain behavior have been discussed with respect to several theories on the role of binder deformation in cermet mechanical response.
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References
H.E. Exner:Int. Met. Revs., 1979, no. 4, pp. 149–73.
R. Arndt:Z. Metallkunde, 1972, vol. 63, pp. 274–80.
V. K. Sarin and T. Johannesson:Metal Sci., 1975, vol. 9, pp. 472–76.
H. Jonsson:Planseeber Pulvermet., 1976, vol. 24, pp. 108–34.
A.D. Krawitz, E. F. Drake, R.L. DeGroot, C.H. Vasel, and W. B. Yelon:Science of Hard Materials, R. Viswanadham, D. Rowcliffe, and J. Gurland, eds., Plenum Pub. Corp., New York, NY, 1983, pp. 973–89.
J. B. Hess and C. S. Barrett:TMS-AIME, 1952, vol. 194, pp. 645–47.
A. Giamei, J. Burma, and E.I. Freise:Cobalt, 1968, vol. 39, pp. 88–96.
L. Remy and A. Pineau:Mater. Sci. Engrg., 1976, vol. 26, pp. 123–32.
G. Chalant and L. Remy.Acta Metall., 1980, vol. 28, pp. 75–88.
L. Remy:Metall. Trans. A, 1981, vol. 12A, pp. 387–408.
B. Roebuck and E. A. Almond:Proc. Recent Adv. in Hardmetals Production, Loughborough University, Met. Powder Rept., 1979.
E.F. Drake and A.D. Krawitz:Metall. Trans. A, 1981, vol. 12A, pp. 505–13.
S.M. Brabyn, R. Cooper, and C. T. Peters:Proc. 10th PlanseeSeminar, Metallwerke Plansee, Reutte, Austria, 1981, vol. 2, pp. 675–92.
H. P. Klug and L. E. Alexander:X-Ray Diffraction Procedures, 2nd ed., John Wiley, New York, NY, 1974.
G.E. Bacon:Neutron Diffraction, 3rd ed., Oxford Univ. Press, London, 1975.
E. A. Kenik, A. D. Krawitz, and E. F. Drake:39th Ann. Proc. Elec. Mic. Soc. Amer., Atlanta, GA, 1981, pp. 56–57.
Metals Handbook, 8th ed., ASM, Metals Park, OH, 1976, vol. 8.
C.S. Barrett and T. B. Massalski:Structure of Metals, 3rd ed., Pergamon Press, Elmsford, NY, 1980.
Powder Diffraction File, JCPDS-International Center for Diffraction Data, Swarthmore, PA, 1981.
A. D. Krawitz, R. Roberts, and J. Faber:Proc. 2nd Intl. Conf. on the Science of Hard Materials, Rhodes, Greece, 1984, in press.
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Formerly Graduate Research Assistant, University of Missouri, Columbia, MO
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Vasel, C.H., Krawitz, A.D., Drake, E.F. et al. Binder deformation in WC-(Co, Ni) cemented carbide composites. Metall Trans A 16, 2309–2317 (1985). https://doi.org/10.1007/BF02670431
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DOI: https://doi.org/10.1007/BF02670431