Mechanical properties of alloys consisting of two ductile phases

Role and significance of source hardening in radiation embrittlement of iron and ferritic steels

The interaction of interstitial impurity atoms (IIA’s) with radiation-produced defects in bcc metals and its influence on radiation hardening and embrittlement are reviewed. Special emphasis is placed on the role of oxygen in vanadium and niobium and of nitrogen and carbon in iron and steel. Upon postirradiation annealing at temperatures where the IIA’s are mobile (about 50 °C to 250 °C), resistivity stages and decreases in internal friction (Snoek damping) are observed. Evidence is examined that leads to the conclusion that IIA’s are trapped at radiation-produced defects upon postirradiation annealing,which removes the IIA’s from solid solution. The consequences of this IIA trapping on mechanical properties are summarized, particularly in terms of the phenomena of radiation anneal hardening, static strain aging, and dynamic strain aging (DSA). Static and dynamic strain aging are shown to be retarded or suppressed in irradiated metals. Recent investigations, which demonstrate that the suppression of DSA in steel can lead to an increase in ductility upon irradiation, are described.

Impurity-Defect Interactions and Radiation Hardening and Embrittlement in BCC Metals

Investigation of dynamic strain aging in SA106 Gr.C piping steel

Effect of dynamic strain aging on the leak-before-break analysis in SA106 Gr.C piping steel

A personal computer based system to evaluate J-integral by a single specimen unloading compliance method—part II: Results on A533B class I steel and corona-5

H. Margolin

Papers

A personal computer based system to evaluate J-integral by a single specimen unloading compliance method—part II: Results on A533B class I steel and corona-5