Novel consolidation methods for rapidly solidified aluminum alloys

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

OSTI ID:5369535

Sastry, S M.L.; Peng, T C; O'Neal, J E ^[1]

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1. McDonnell Douglas Research Laboratories, St. Louis, MO (USA)

Rapidly solidified aluminum alloy powders consolidated by hot pressing and extrusion experience certain amounts of recrystallization, grain growth, phase change, precipitation, and segregation. Many of these microstructural changes diminish the effectiveness of heat treatments in controlling mechanical properties after consolidation. Furthermore, the ever-present surface oxide on individual Al-alloy particles is not easily broken and dispersed in the consolidation process, with the result that interparticle bonding is poor. In the present investigation, dynamic consolidation by explosive compaction was investigated to determine the extent of interparticle bonding and microstructural and property improvements in rapidly solidified aluminum alloys. The presentation discusses compaction techniques and interrelationships between post-consolidated microstructures and mechanical properties with compaction variables.

• OSTI ID: 5369535
• 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
360102 -- Metals & Alloys-- Structure & Phase Studies
360103 -- Metals & Alloys-- Mechanical Properties
ALLOYS
ALUMINIUM ALLOYS
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
COMPACTING
COMPACTS
CONSTRAINTS
CORRELATIONS
CRYSTAL STRUCTURE
EXPLOSIVE FORMING
EXTRUSION
FABRICATION
HOT PRESSING
LAYERS
MATERIALS WORKING
MECHANICAL PROPERTIES
MICROSTRUCTURE
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
PRESSING
SOLIDIFICATION