Dynamic observations of heavy-ion damage in Fe and Fe-Cr alloys.

Journal Article · Thu Jan 01 04:00:00 EST 2009 · J. Nucl. Mater.

DOI:https://doi.org/10.1016/j.jnucmat.2009.02.003· OSTI ID:978987

Jenkins, M L; Yao, Z; Hernandez-Mayoral, M; Kirk, M A; CIEMAT,

We give an overview and summary of recent in-situ heavy-ion irradiation experiments on Fe and Fe-Cr alloys carried out on the Argonne IVEM Facility at irradiation temperatures up to 500 C. Several new and unexpected observations were made. At low doses the contrast of new irradiation-induced dislocation loops sometimes developed over time intervals as long as 0.2 s, many orders of magnitude longer than expected for a process of cascade collapse. In addition at temperatures {le} 300 C, 'hopping' of 1/2<111> loops was induced by the ion or electron beams, especially in UHP Fe. At high doses complex microstructures developed in all materials, involving the formation of large interstitial loops. At 300 C and RT these loops had Burgers vectors of type b = 1/2<111> and large shear components. At 500 C only edge loops with b = <100> were produced.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 978987
• Report Number(s): ANL/MSD/JA-62259
• Journal Information: J. Nucl. Mater., Journal Name: J. Nucl. Mater. Journal Issue: 2 ; 2009 Vol. 389; ISSN 0022-3115; ISSN JNUMAM
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
ALLOYS
BURGERS VECTOR
DISLOCATIONS
ELECTRON BEAMS
INTERSTITIALS
IRRADIATION
SHEAR