The temperature dependence of heavy-ion damage in iron: a microstructural transition at elevated temperatures.

Journal Article · Fri Jan 01 04:00:00 EST 2010 · Philos Mag.

DOI:https://doi.org/10.1080/14786430903430981· OSTI ID:994069

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

A transition is reported in the dislocation microstructure of pure Fe produced by heavy-ion irradiation of thin foils, which took place between irradiation temperatures (T{sub irr}) of 300 C and 500 C. At T{sub irr} {le} 400 C, the microstructure was dominated by round or irregular non-edge dislocation loops of interstitial nature and with Burgers vectors b = 1/2 111, although interstitial 100 loops were also present; at 500 C only rectilinear pure-edge 100 loops occurred. At intermediate temperatures there was a gradual transition between the two types of microstructure. At temperatures just below 500 C, mobile 111 loops were seen to be subsumed by sessile 100 loops. A possible explanation of these observations is given.

• Research Organization: Argonne National Laboratory (ANL)
• Sponsoring Organization: SC; UKAEA Culham Science Centre
• DOE Contract Number: AC02-06CH11357
• OSTI ID: 994069
• Report Number(s): ANL/MSD/JA-68547
• Journal Information: Philos Mag., Journal Name: Philos Mag. Journal Issue: 35-36 ; 2010 Vol. 90; ISSN 1478-6435
• Country of Publication: United States
• Language: ENGLISH

Related Subjects

36 MATERIALS SCIENCE
BURGERS VECTOR
DISLOCATIONS
HEAVY IONS
INTERSTITIALS
IRON
IRRADIATION
MICROSTRUCTURE
MORPHOLOGICAL CHANGES
RADIATION EFFECTS
TEMPERATURE DEPENDENCE