Experimental techniques used to determine the yield locus of 1100 aluminum tubes

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

OSTI ID:5365677

Aikin, R M; Stout, M G; Helling, D E ^[1]

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1. Los Alamos National Laboratory, NM (USA)

The experimental techniques needed to prestrain tubes and subsequently determine the yield locus are out of the ordinary. Tubes were deformed in combinations of tension and torsion using an MTS servo-hydraulic system with special modifications to facilitate extremely accurate control and strain measurement. The MTS test system, these modifications, and our general approach to instrumentation are discussed. Accurate alignment of test fixtures and use of lubricated mandrels was necessary to prevent the buckling of the tubular test specimens under torsional prestraining. A technique which permitted a torsional prestrain to {gamma} = 0.5 is described and a general description of subsequent yield loci experiments given.

• OSTI ID: 5365677
• 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
360103* -- Metals & Alloys-- Mechanical Properties
42 ENGINEERING
420500 -- Engineering-- Materials Testing
ALIGNMENT
ALLOYS
ALUMINIUM ALLOYS
DEFORMATION
DETECTION
LUBRICATION
MEASURING METHODS
MECHANICAL PROPERTIES
STRAINS
TEST FACILITIES
YIELD STRENGTH