Tensile testing at constant true plastic strain rate

Journal Article · Tue Jul 01 04:00:00 EDT 1980 · J. Met.; (United States)

DOI:https://doi.org/10.1007/BF03354560· OSTI ID:6701427

Hartley, C S ^[1]; Jenkins, D A

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1. State Univ. of New York, Stony Brook

A closed-loop system for tensile testing at constant true plastic strain rate is described. The system consists of a servohydraulic testing machine for which the actuator velocity is controlled by the instantaneous minimum cross-sectional dimension of the specimen. A closed-loop temperature-control system using resistance heating of the specimen is incorporated to permit tests at elevated temperatures. Examples are given of true stress-strain curves of annealed 304 stainless steel rod and annealed Zircaloy-4 plate, tested parallel and perpendicular to the rolling direction. Problems encountered due to deformation-induced heating, noisy circuitry, and plastic anisotropy are discussed.

• OSTI ID: 6701427
• Journal Information: J. Met.; (United States), Journal Name: J. Met.; (United States) Vol. 32:7; ISSN JOMTA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360103* -- Metals & Alloys-- Mechanical Properties
440300 -- Miscellaneous Instruments-- (-1989)
47 OTHER INSTRUMENTATION
ALLOYS
CHROMIUM ALLOYS
CHROMIUM STEELS
CHROMIUM-NICKEL STEELS
CORROSION RESISTANT ALLOYS
HEAT RESISTANT MATERIALS
HEAT RESISTING ALLOYS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MEASURING INSTRUMENTS
MECHANICAL PROPERTIES
NICKEL ALLOYS
STAINLESS STEEL-304
STAINLESS STEELS
STEELS
STRAIN RATE
TENSILE PROPERTIES
TENSIOMETERS
TIN ALLOYS
ZIRCALOY
ZIRCALOY 4
ZIRCONIUM ALLOYS
ZIRCONIUM BASE ALLOYS