Abstract
In an effort to enhance ductility and strength of Cr-base alloys, a series of Cr-Ru alloys with Ru contents ranging from 3 to 30 at. pct were made to study their microstructure evolution and mechanical properties. The microstructure of the alloys with 6 to 20 at. pct Ru showed signs of a eutectic structure. However, no corresponding eutectic reaction is indicated in the published Cr-Ru phase diagram. The yield strength of the Cr-Ru alloys increased with increasing Ru content at both room temperature and 1200 °C. The tensile ductility of Cr-3 at. pct Ru is about 1.5 pct at room temperature, while the alloys containing 6 at. pct or more Ru showed zero tensile elongation. The deformation mechanisms of the Cr-Ru alloys are discussed in terms of the microstructure and fracture behavior.
Similar content being viewed by others
References
A.H. Sully: Metallurgy of the Rarer Metals—1. Chromium 1st ed., Butterworths Scientific Publications, London, 1954.
C.T. Sims: J. Met., 1963, vol. 15, pp. 127–32.
W.D. Klopp: J. Met., 1969, vol. 21, pp. 23–32.
E.S. Greiner: Trans. AIME, 1950, vol. 188, pp. 891–92.
R.R. Lloyd, W.T. Rawles, and R.G. Feeney: J. Electrochem. Soc., 1946, vol. 89, pp. 443–51.
A.H. Sully, and E.A. Brandes: J. Inst. Met., 1952–53, vol. 81, pp. 573–77.
A.H. Sully, E.A. Brandes, and K.W. Mitchell: J. Inst. Met., 1952–53, vol. 81, pp. 585–98.
F. Henderson, S.T. Quaass, and H.L. Wain: J. Inst. Met., 1954–55, vol. 83, pp. 126–32.
G.R. Wilms and T.W. Rea: J. Less-Common Met., 1959, vol. 1, pp. 152–56.
W.P. Rees, B.E. Hopkins, and H.R. Tipler: J. Iron Steel Inst., 1951, vol. 169, pp. 157–63.
W.H. Smith and A.U. Seybolt: Ductile Chromium and Its Alloys, 1st ed., AMS, Cleveland, OH, 1957, p. 169.
J.C. Geach and J.E. Hughes: Plansee Proc., Pergamon Press, Oxford, United Kingdom, 1956, pp. 245–53.
W.D. Klopp, F.C. Holden, and R.I. Jaffee: Report No. 1512(00), Battele Mem Inst., Columbus, OH, 1960.
C.S. Wukusick: Report No. GEMP-362, General Electric Co., Cincinnati, OH, June 25, 1965.
W.O. Binder and H.R. Spendelow: Trans. ASM, 1951, vol. 43, pp. 759–72.
C. Stein and N.J. Grant: J. Met., 1955, vol. 7, pp. 127–34.
C.S. Wukusick: Proc. Conf. “Refractory Metals and Alloys IV—Research and Development,” Gordon and Breach Press, New York, NY, 1967, pp. 231–45.
J.R. Stephens and W.D. Klopp: Trans. AIME, 1968, vol. 242, pp. 1837–43.
T.B. Massalski: Binary Alloy Phase Diagrams, 2nd ed., ASM, Materials Park, OH, 1992, p. 27.
E.M. Savitskii, V.F. Terekhova, and N.A. Birun: Russ. J. Inorg. Chem., 1960–61, vol. 6, p. 1002.
F.A. Shunk: Constitution of Binary Alloys, 2nd ed., McGraw-Hill, New York, NY, 1969, p. 278.
R.M. Waterstart: J. Less-Common Met., 1981, vol. 80, pp. 31–36.
A. Gilbert and B.C. Allen: J. Inst. Met., 1964, vol. 93, pp. 529–35.
H.L. Wain, F. Henderson, and S.T.M. Johnstone: J. Inst. Met., 1954–55, vol. 83, pp. 133–42.
O.N. Carlson, L.L. Sherwood, and F.A. Schmidt: J Less-Common Met., 1964, vol. 6, pp. 439–50.
B.A. Wilcox, N.D. Veigel, and A.H. Clauer: Metall. Trans., 1972, vol. 3, pp. 273–83.
Author information
Authors and Affiliations
Additional information
This article is based on a presentation made in the symposium entitled “Beyond Nickel-Base Superalloys,” which took place March 14–18, 2004, at the TMS Spring meeting in Charlotte, NC, under the auspices of the SMD-Corrosion and Environmental Effects Committee, the SMD-High Temperature Alloys Committee, the SMD-Mechanical Behavior of Materials Committee, and the SMD-Refractory Metals Committee.
Rights and permissions
About this article
Cite this article
Gu, Y.F., Ro, Y., Kobayashi, T. et al. Microstructural evolution and mechanical properties of Cr-Ru alloys. Metall Mater Trans A 36, 577–582 (2005). https://doi.org/10.1007/s11661-005-0172-6
Issue Date:
DOI: https://doi.org/10.1007/s11661-005-0172-6