Friction and source hardening in irradiated mild steel

Journal Article · Tue Mar 01 04:00:00 EST 1983 · Scr. Metall.; (United States)

DOI:https://doi.org/10.1016/0036-9748(83)90165-5· OSTI ID:5434727

Murty, K L; Oh, D J

The effect of neutron fluence on stress-strain behavior of mild steel at ambient temperature revealed that Luders strain increases with fluence and at the highest fluence employed here namely 1.4x10/sup 19/n/cm/sup 2/ fracture occurred during Luders propagation. The lower yield stress increased as cube root of fluence and friction stress increased as square root of fluence. The interstitial impurity atoms (C and N) combine with irradiation induced defects thereby resulting in reduced net concentration of free C and N in solution and thus the source pinning effect decreases in irradiated steels as observed here. The increase in Luders strain with the corresponding decrease in source hardening resulted in reduced work-hardening in irradiated steels as expected.

• Research Organization: North Carolina State University, Raleigh, North Carolina 27650
• OSTI ID: 5434727
• Journal Information: Scr. Metall.; (United States), Journal Name: Scr. Metall.; (United States) Vol. 17:3; ISSN SCRMB
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360106* -- Metals & Alloys-- Radiation Effects
ALLOYS
DAMAGING NEUTRON FLUENCE
DATA ANALYSIS
EXTERNAL IRRADIATION
FRACTURE MECHANICS
FRICTION
HARDENING
IRON ALLOYS
IRON BASE ALLOYS
IRRADIATION
MECHANICS
NEUTRON FLUENCE
PHYSICAL RADIATION EFFECTS
RADIATION EFFECTS
STEELS
STRAIN HARDENING
STRAINS
STRESS INTENSITY FACTORS
TEMPERATURE DEPENDENCE