PHASE CHANGE AND HEAT TREATMENT OF U-Mn ALLOYS

Journal Article · Wed May 01 04:00:00 EDT 1963 · Nippon Genshiryoku Gakkaishi (Japan)

DOI:https://doi.org/10.3327/jaesj.5.381· OSTI ID:4696087

Soeno, K

Behavior of the transformations and grain refinement was studied using a series of uranium alloys varying in manganese content from 0.25 to 1.0 at.%. The tendency of the retention of BETA or gamma uranium phase by quenching was examined as a function of manganese content. The BETA phase can be retained, while the retained gamma phase could not be detected at all. TTT diagrams were determined and the existence of two modes in the BETA -to- alpha transformation is cleared. The M temperature increases with decreasing manganese content and activation energy of U- 1.0 at.% Mn alloy is calculated as 43.5 kcal/g-atom from the BETA -to alpha TTT diagram in nucleation and growth mechanism. Grain refinement is attained by the BETA -to- alpha transformation of nucleation and growth mode in the temperature region below the nose of the TTT diagram. (auth)

• Research Organization: Hitachi Ltd., Japan
• Sponsoring Organization: USDOE
• NSA Number: NSA-17-027862
• OSTI ID: 4696087
• Journal Information: Nippon Genshiryoku Gakkaishi (Japan), Journal Name: Nippon Genshiryoku Gakkaishi (Japan) Vol. Vol: 5; ISSN NGEGA
• Country of Publication: Country unknown/Code not available
• Language: Japanese

Related Subjects

ALLOTROPY
DIAGRAMS
GRAIN SIZE
HEAT TREATMENTS
MANGANESE
MANGANESE ALLOYS
MECHANICS
METALS, CERAMICS, AND OTHER MATERIALS
QUANTITY RATIO
THERMODYNAMICS
URANIUM ALLOYS