Research Article | Open Access | 10.31586/Metal.0401.01

Thermal Stability of Ultrafine Grained CuCrZr Alloy Produced by Continuous Extrusion


The Cu-0.36Cr-0.15Zr alloy was prepared by solid solution, continuous extrusion and cold deformation. The microstructural evolution, microhardness and the thermal analysis were examined for the alloy after annealing treatment at different temperatures ranging from 300 oC to 700 oC. Experimental results show that the microstructure of the alloy remains stable after annealed below 500 oC due to the pinning effect of dislocations from the nanoscale precipitates. However, recrystallization and grain growth took place after a 600 oC annealing treatment when the precipitates grew up and lose inhibition of movement of dislocations and grain boundaries. Meanwhile, the higher dislocation density and finer grains introduced by continuous extrusion accelerate the recrystallization process compared with that prepared by the traditional rolling process.


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Yucel Birol. Thermal fatigue testing of CuCrZr alloy for high temperature tooling applications. Journal of Materials Science 45.16 (2010): 4501-4506.
G. Durashevich, V. Cvetkovski, V. Jovanovich. Effect of thermomechanical treatment on mechanical properties and electrical conductivity of a CuCrZr alloy. Bulletin of Materials Science 25.1 (2002): 59-62.
G.M. Kalinin, A.D. Ivanov, A.N. Obushev, B.S. Rodchenkov, M.E. Rodin, Y.S. Strebkov. Ageing effect on the properties of CuCrZr alloy used for the ITER HHF components. Journal of Nuclear Materials 367 (2007): 920-924.
L. Huaqing, X. Shuisheng, M. Xujun, L. Yong, W. Pengyue, C. Lei. Influence of cerium and yttrium on Cu-Cr-Zr alloys. Journal of Rare Earths 24.1 (2006): 367-371.
K. Kapoor, D. Lahiri, I.S. Batra, S.V.R. Rao, T. Sanyal. X-ray diffraction line profile analysis for defect study in Cu-1 wt.% Cr-0.1 wt.% Zr alloy. materials Characterization 54.2 (2005): 131-140.
S.G. Mu, F.A. Guo, Y.Q. Tang, X.M. Cao, M.T. Tang. Study on microstructure and properties of aged Cu–Cr–Zr–Mg–RE alloy. Materials Science and Engineering: A 475.1-2 (2008): 235-240.
A. Vinogradov, V. Patlan, Y. Suzuki, K. Kitagawa, V.I. Kopylov. Structure and properties of ultra-fine grain Cu–Cr–Zr alloy produced by equal-channel angular pressing. Acta materialia 50.7 (2002): 1639-1651..
H. Feng, H. Jiang, D. Yan, L. Rong. Effect of continuous extrusion on the microstructure and mechanical properties of a CuCrZr alloy. Materials Science and Engineering: A 582 (2013): 219-224.
H. Feng, H. Jiang, D. Yan, L. Rong. Microstructure and mechanical properties of a CuCrZr welding joint after continuous extrusion. Journal of Materials Science & Technology 31.2 (2015): 210-216.
H. Jiang, Y.T. Zhu, D.P. Butt, I.V. Alexandrov, T.C. Lowe. Microstructural evolution, microhardness and thermal stability of HPT-processed Cu. Materials Science and Engineering: A 290.1-2 (2000): 128-138.
J.H. Su, P. Liu, H.J. Li, F. Ren, Q. Dong. Phase transformation in Cu–Cr–Zr–Mg alloy. Materials Letters 61.27 (2007): 4963-4966.
U. Holzwarth, H. Stamm. The precipitation behaviour of ITER-grade Cu–Cr–Zr alloy after simulating the thermal cycle of hot isostatic pressing. Journal of Nuclear Materials 279.1 (2000): 31-45.
I.S. Batra, G.K. Dey, U.D. Kulkarni, S. Banerjee. Precipitation in a Cu–Cr–Zr alloy. Materials Science and Engineering: A 356.1-2 (2003): 32-36.
M. Verdier, I. Groma, L. Flandin, J. Lendvai, Y. Bréchet, P. Guyot. Dislocation densities and stored energy after cold rolling of Al-Mg alloys: investigations by resistivity and differential scanning calorimetry. Scripta Materialia 37.4 (1997): 449-454.
C. Gu, C. Davies. Thermal stability of ultrafine-grained copper during high speed micro-extrusion. Materials Science and Engineering: A 527.7-8 (2010): 1791-1799.
X.F. Li, A.P. Dong, L.T. Wang, Z. Yu, L. Meng. Thermal stability of heavily drawn Cu–0.4 wt.% Cr–0.12 wt.% Zr–0.02 wt.% Si–0.05 wt.% Mg. Journal of Alloys and Compounds 509.10 (2011): 4092-4097.
F. Lotgering. Topotactical reactions with ferrimagnetic oxides having hexagonal crystal structures—I. Journal of Inorganic and Nuclear Chemistry 9.2 (1959): 113-123.
H. Rodriguez-Alvarez, R. Mainz, B. Marsen, D. Abou-Ras, H.W. Schock. Recrystallization of Cu–In–S thin films studied in situ by energy‐dispersive X‐ray diffraction. Journal of Applied Crystallography 43.5‐1 (2010): 1053-1061.
R.P. Singh, A. Lawley, S. Friedman, Y. Murty. Microstructure and properties of spray cast Cu5Zr alloys. Materials Science and Engineering: A 145.2 (1991): 243-255.
E. Nes, N. Ryum, O. Hunderi. On the Zener drag. Acta Metallurgica 33.1 (1985): 11-22.
F.J. Humphreys, M. Hatherly, Recrystallization and related annealing phenomena, Elsevier, 1995.
J. Driver. Stability of nanostructured metals and alloys. Scripta Materialia 51.8 (2004): 819-823.


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January 7, 2019
How to Cite
FENG, Hui et al. Thermal Stability of Ultrafine Grained CuCrZr Alloy Produced by Continuous Extrusion. Trends Journal of Sciences Research, [S.l.], v. 4, n. 1, p. 1-8, jan. 2019. ISSN 2377-8083. Available at: <>. Date accessed: 21 jan. 2019.