Fracture toughness of copper-base alloys for ITER applications: A preliminary report
- Oak Ridge National Lab., TN (United States)
Oxide-dispersion strengthened copper alloys and a precipitation-hardened copper-nickel-beryllium alloy showed a significant reduction in toughness at elevated temperature (250{degrees}C). This decrease in toughness was much larger than would be expected from the relatively modest changes in the tensile properties over the same temperature range. However, a copper-chromium-zirconium alloy strengthened by precipitation showed only a small decrease in toughness at the higher temperatures. The embrittled alloys showed a transition in fracture mode, from transgranular microvoid coalescence at room temperature to intergranular with localized ductility at high temperatures. The Cu-Cr-Zr alloy maintained the ductile microvoid coalescence failure mode at all test temperatures.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- OSTI ID:
- 543292
- Report Number(s):
- DOE/ER--0313/21; ON: DE97008798
- Country of Publication:
- United States
- Language:
- English
Similar Records
Mechanisms influencing the cryogenic fracture-toughness behavior of aluminum-lithium alloys
The effect of hydrogen on the fracture toughness of Alloy X-750
Intergranular fracture in some precipitation-hardened aluminum alloys at low temperatures
Journal Article
·
Sun Dec 31 23:00:00 EST 1989
· Acta Metallurgica et Materialia; (United States)
·
OSTI ID:7267093
The effect of hydrogen on the fracture toughness of Alloy X-750
Journal Article
·
Fri Feb 28 23:00:00 EST 1997
· Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
·
OSTI ID:484837
Intergranular fracture in some precipitation-hardened aluminum alloys at low temperatures
Journal Article
·
Tue Oct 01 00:00:00 EDT 1996
· Metallurgical and Materials Transactions. A, Physical Metallurgy and Materials Science
·
OSTI ID:417865