On the constitutive relations for. delta. yields. alpha. and. alpha. yields. delta. martensitic transformation plastricity in plutonium alloys

Journal Article · Fri May 01 04:00:00 EDT 1992 · Acta Metallurgica; (United States)

OSTI ID:7306749

Adler, P H ^[1]; Gallegos, G F ^[2]; Olson, G B ^[3]; Stevens, M F ^[4]

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1. Metcal Corp., Menlo Park, CA (US)
2. Lawrence Livermore National Lab., CA (United States). Chemistry and Materials Science Dept.
3. Northwestern Univ., Evanston, IL (United States). Dept. of Materials Science and Engineering
4. Los Alamos National Lab., NM (United States). Materials Science and Technology Div.

This paper reports on a constitutive model for transformation plasticity based on isothermal martensitic kinetics that is applied to {delta} {yields} {alpha} and {alpha} {yields} {delta} transformation in Pu alloys. The model is in good agreement with available data for the {delta} {yields} {alpha} transformation plasticity behavior of PuGa alloys in uniaxial compression as a function of composition, temperature and stain rate. Application of {alpha} {yields} {delta}transformation in uniaxial tension and crack-tip stress states indicates that general transformation in uniaxial tension is precluded by premature brittle fracture of the {alpha} phase, but localized transformation will occur at crack tips as supported by metallographic observations.

• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 7306749
• Journal Information: Acta Metallurgica; (United States), Journal Name: Acta Metallurgica; (United States) Vol. 40:5; ISSN 0001-6160; ISSN AMETA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
360104 -- Metals & Alloys-- Physical Properties
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201 -- Chemical & Physicochemical Properties
ACTINIDE ALLOYS
ALLOYS
CARBON ADDITIONS
CHEMICAL COMPOSITION
CRACK PROPAGATION
FRACTURE MECHANICS
GALLIUM ALLOYS
IRON ALLOYS
ISOTHERMAL PROCESSES
MARTENSITE
MECHANICAL PROPERTIES
MECHANICS
METALLOGRAPHY
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
PLASTICITY
PLUTONIUM ALLOYS
STRAINS
TEMPERATURE DEPENDENCE
THERMODYNAMIC PROPERTIES