TY - JOUR
T1 - Fracture behavior of high-strength, high-conductivity copper alloys
AU - Li, M.
AU - Heuer, J. K.
AU - Stubbins, J. F.
AU - Edwards, D. J.
N1 - Funding Information:
This work was supported by the Associated Western Universities (AWU) through a grant from the Pacific Northwest National Laboratory (PNNL) under the US DOE Fusion Materials Program, as well as by OMG Americas, and Brush Wellman. We would like to express our appreciation to D.J. Edwards, PNNL, and the US DOE Fusion Materials Program for supplying the GlidCop and Hycon materials, produced by OMG Americas, and Brush Wellman, respectively. We would also like to thank S.J. Zinkle, ORNL, for supplying the CuCrZr alloy. The Advanced Materials Testing and Evaluation Laboratory (AMTEL), UIUC and the Center for Microanalysis of Materials in Seitz Materials Research Laboratory, UIUC provided the mechanical testing facilities and microanalysis facilities.
PY - 2000
Y1 - 2000
N2 - The fracture behavior of three copper alloys, namely, one dispersion-strengthened alloy: GlidCop™CuAl25, and two precipitation-hardened alloys: Hycon3HP™CuNiBe and Elbrodur CuCrZr, was investigated in the temperature range 20-300°C in vacuum. The results show that all these three alloys experienced a loss of fracture resistance with increasing test temperature. In the case of the CuNiBe alloy, the fracture resistance drops very rapidly as test temperature increases, and the other two alloys also experience drops in toughness, but not quite to the same extent. In fact, the fracture resistance of CuCrZr is affected only moderately by test temperature. The reduction of fracture resistance with increasing temperature in vacuum shows that the environment is not the only factor responsible for poor toughness. Further, microstructural analysis of the CuNiBe alloy shows that changes in grain boundary microstructure resulted from discontinuous precipitation. This is assumed to have a significant effect on the fracture behavior of this alloy.
AB - The fracture behavior of three copper alloys, namely, one dispersion-strengthened alloy: GlidCop™CuAl25, and two precipitation-hardened alloys: Hycon3HP™CuNiBe and Elbrodur CuCrZr, was investigated in the temperature range 20-300°C in vacuum. The results show that all these three alloys experienced a loss of fracture resistance with increasing test temperature. In the case of the CuNiBe alloy, the fracture resistance drops very rapidly as test temperature increases, and the other two alloys also experience drops in toughness, but not quite to the same extent. In fact, the fracture resistance of CuCrZr is affected only moderately by test temperature. The reduction of fracture resistance with increasing temperature in vacuum shows that the environment is not the only factor responsible for poor toughness. Further, microstructural analysis of the CuNiBe alloy shows that changes in grain boundary microstructure resulted from discontinuous precipitation. This is assumed to have a significant effect on the fracture behavior of this alloy.
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U2 - 10.1016/S0022-3115(00)00316-0
DO - 10.1016/S0022-3115(00)00316-0
M3 - Article
AN - SCOPUS:0011157703
SN - 0022-3115
VL - 283-287
SP - 977
EP - 981
JO - Journal of Nuclear Materials
JF - Journal of Nuclear Materials
IS - PART II
ER -