EFFECTS OF NEUTRON BOMBARDMENT OF MARTENSITE TRANSFORMATION

Journal Article · Fri Jun 21 04:00:00 EDT 1957 · Doklady Akad. Nauk S.S.S.R.

OSTI ID:4353073

Zakharov, A I; Maksimova, O P

Attempts were made to adapt neutron bombardment in investigation of martensite transformations. Preliminary studies were made of plastic deformation effects on the martensite transformation of steel and alloys. Specimens of manganese steel (0.48% C, 7.7% Mn, T/sub m/ = 10 deg C) and (1.40% C, 4.0% Mn, T/ sub m/ = 94 deg C), nickel steel (0.50% C, 21.0% Ni, T/sub m/ = 28 deg C), and, Fe-Ni-Mn alloys (0.025% C, 22.7% Ni, 2.88% Mn, T/sub m/ = -39 deg C) were investigated. Bombardments of specimens, annealed in vacuum at 111 deg C, were carried out in the active zone of a heavy water reactor near U cores. One group of samples was bombarded for 100 hr, the other for 206 hr, with a neutron current of the order of 10/sup 17/ n/cm/sup 2/. The austenite stability was evaluated on magnetometric curves of deep heating and cooling. The bombardment increased intensity of martensite transformation in all specimens of steel; however, in the specimens of Fe-Ni-Mn alloys it had a stabilizing effect on the gamma phase, lowered the martensite point, and reduced the intensity of transformation. However, it would be erroneous to conclude that the bombardment activation pertains only to steels, rather that the bombardment process causes simultaneous structural changes and depends on the properties of austenites. (R.V.J.)

• Research Organization: Central Research Inst. of Metallurgy
• NSA Number: NSA-12-000661
• OSTI ID: 4353073
• Journal Information: Doklady Akad. Nauk S.S.S.R., Journal Name: Doklady Akad. Nauk S.S.S.R. Vol. Vol: 114
• Country of Publication: Country unknown/Code not available
• Language: Russian

Related Subjects

ALLOYS
ANNEALING
AUSTENITE
COOLING
GRAPHITE
HEATING
HEAVY WATER
IRRADIATION
MANGANESE ALLOYS
MARTENSITE
NEUTRON FLUX
NEUTRONS
NICKEL ALLOYS
PHYSICS
RADIATION DOSES
RADIATION EFFECTS
REACTORS
STABILITY
STEELS
VACUUM