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Irradiation-induced hardening and softening of CLAM steel under Fe ion irradiation

Irradiation-induced hardening and softening of CLAM steel under Fe ion irradiation Abstract The irradiation-induced hardening and softening of CLAM steel irradiated with 3.5 MeV Fe13+ ions at temperatures of 300 °C and 550 °C were investigated by nanoindentation tests in combination with microstructures. Irradiation- induced hardening occurred in the steel irradiated at 300 °C to doses of 0.46 dpa, 0.94 dpa, and 2.79 dpa. The hardening occurred at 300 °C is mainly attributed to the formation of irradiation-produced dislocation loops and a network of tangled dislocations in the irradiated steel samples. Significant hardening was found in the steel irradiated at 550 °C to 0.38 dpa. On the contrary, irradiation-induced softening occurred in the steel irradiated at 550 °C to both 0.76 dpa and 2.75 dpa. Irradiation-produced dislocation loops are not dominant effect on the irradiation hardening of the steel samples irradiated at 550 °C. The hardening and softening of the irradiated steel were explained in terms of the irradiation-produced defects and recovery process occurred during the irradiation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png "Metals and Materials International" Springer Journals

Irradiation-induced hardening and softening of CLAM steel under Fe ion irradiation

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References (35)

Publisher
Springer Journals
Copyright
2017 The Korean Institute of Metals and Materials and Springer Science+Business Media B.V., part of Springer Nature
ISSN
1598-9623
eISSN
2005-4149
DOI
10.1007/s12540-017-7156-0
Publisher site
See Article on Publisher Site

Abstract

Abstract The irradiation-induced hardening and softening of CLAM steel irradiated with 3.5 MeV Fe13+ ions at temperatures of 300 °C and 550 °C were investigated by nanoindentation tests in combination with microstructures. Irradiation- induced hardening occurred in the steel irradiated at 300 °C to doses of 0.46 dpa, 0.94 dpa, and 2.79 dpa. The hardening occurred at 300 °C is mainly attributed to the formation of irradiation-produced dislocation loops and a network of tangled dislocations in the irradiated steel samples. Significant hardening was found in the steel irradiated at 550 °C to 0.38 dpa. On the contrary, irradiation-induced softening occurred in the steel irradiated at 550 °C to both 0.76 dpa and 2.75 dpa. Irradiation-produced dislocation loops are not dominant effect on the irradiation hardening of the steel samples irradiated at 550 °C. The hardening and softening of the irradiated steel were explained in terms of the irradiation-produced defects and recovery process occurred during the irradiation.

Journal

"Metals and Materials International"Springer Journals

Published: Nov 1, 2017

Keywords: Metallic Materials; Manufacturing, Machines, Tools, Processes; Magnetism, Magnetic Materials; Engineering Thermodynamics, Heat and Mass Transfer; Characterization and Evaluation of Materials; Solid Mechanics

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