Shock consolidation of rapidly solidified type 304 stainless steel powders

Conference · · TMS (The Metallurgical Society) Paper Selection; (USA)

OSTI ID:5369906

Flinn, J E; Korth, G E; Graham, R A; Green, R C; Schoenlein, L H ^[1]

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1. EG G Idaho, Inc., Idaho Falls, ID (USA)

Shock compaction of dissolved gas (DGA) and centrifugal atomized (CA) Type 304 SS powders have been assessed using explosive techniques. The goal of the study is to produce full dense crack free monoliths for structure/property correlations, retaining the unique microstructural features afforded by RSP. Peak shock pressures range from 5 to 30 GPa, and fully dense compacts have been produced at the high pressures using die/target, punch, and flyer plate configurations. Microstructural assessments show four morphologies: (1) A thin brittle zone (back surface of the compact) associated with cold welded particles; (2) Zone of extensive plastic deformation with fuse-bonded particles (bulk of compact); (3) Region of massive particle extrusion; and (4) Areas of recrystallization/melting. Characterization of preshocked and consolidated powders include optical and electron microscopy, STEM, and microhardness and DSC measurements.

• OSTI ID: 5369906
• Report Number(s): CONF-840909--
• Conference Information: Journal Name: TMS (The Metallurgical Society) Paper Selection; (USA) Journal Volume: 56
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
ALLOYS
AUSTENITIC STEELS
BRITTLENESS
CALORIMETRY
CHROMIUM ALLOYS
CHROMIUM-NICKEL STEELS
COMPRESSION
CORROSION RESISTANT ALLOYS
CRYSTAL STRUCTURE
DEFORMATION
DENSITY
ELECTRON MICROSCOPY
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
HIGH ALLOY STEELS
IMPACT SHOCK
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
MELTING
MICROSCOPY
MICROSTRUCTURE
MORPHOLOGY
NICKEL ALLOYS
OPTICAL MICROSCOPY
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
POWDERS
PRESSURIZING
RECRYSTALLIZATION
SCANNING ELECTRON MICROSCOPY
STAINLESS STEEL-304
STAINLESS STEELS
STEEL-CR19NI10
STEELS
TRANSMISSION ELECTRON MICROSCOPY