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Title: Temperature-induced transformation in a Pu-2at. % Al alloy

Temperature-induced transformation in a Pu-2at. % Al alloy The delta phase stabilized with 2 at.% aluminum transforms to a monoclinic ..cap alpha..' phase at low temperatures by a thermally activated nucleation and displacive/diffusionless mechanism. The ..cap alpha..' phase is an expanded monoclinic lattice suggesting a valence change in the ..cap alpha..-Pu atoms as a result of trapping smaller, trivalent aluminum atoms. The transformation sequence appears to be directly delta ..-->.. ..cap alpha..'. The ..cap alpha..' product is plate-like, resembling a lenticular martensite.
Authors: ; ; ;
Publication Date:
OSTI Identifier:OSTI ID: 6257064
Report Number(s):LA-UR-81-2455; CONF-810860-4
ON: DE81030109; TRN: 81-016766
DOE Contract Number:W-7405-ENG-36
Resource Type:Conference
Resource Relation:Conference: ASM international conference on solid-solid phase transformations, Pittsburgh, PA, USA, 10 Aug 1981
Research Org:Los Alamos National Lab., NM (USA)
Country of Publication:United States
Language:English
Subject: 36 MATERIALS SCIENCE; ALUMINIUM ALLOYS; PHASE TRANSFORMATIONS; PLUTONIUM BASE ALLOYS; PLUTONIUM-ALPHA; PLUTONIUM-DELTA; ACTINIDE ALLOYS; ACTINIDES; ALLOYS; ELEMENTS; METALS; PLUTONIUM; PLUTONIUM ALLOYS; TRANSURANIUM ELEMENTS 360102* -- Metals & Alloys-- Structure & Phase Studies