ISSN: 1945-7553
CODEN: JTEVAB
Page Count: 7

Design and Performance of an Automated Test Facility for Hot-Compression Testing

Cheng, YW
Materials Reliability Division, National Institute of Standards and Technology, Boulder, CO

Filla, BJ
Materials Reliability Division, National Institute of Standards and Technology, Boulder, CO

Tobler, RL
Materials Reliability Division, National Institute of Standards and Technology, Boulder, CO

(Received 23 September 1996; accepted 31 May 1997)

Abstract

The design of an apparatus for hot-deformation testing of materials is described, and experimental results demonstrating successful performance are presented. The apparatus is used to uniaxially compress small steel cylinders between two ceramic platens in an evacuated test chamber at high temperatures. Components of the system include a 100 kN servohydraulic test machine, a compact radiant furnace and programmable temperature controller, a microcomputer for executing mechanical strikes, and a digital storage oscilloscope for high-speed data acquisition. In the initial experiments described here, steel specimens 10 mm in diameter and 15 mm high are compressed at strain rates up to 50/s and maximum test temperatures up to 1200°C. Attractive features of the apparatus include its relatively low cost, compact size, and capability for high strain rates.

Keywords:
computer-controlled mechanical tests, elevated temperature tests, hot deformation, mechanical properties of steels, plain carbon steels, thermomechanical process simulation, uniaxial compression tests

Paper ID: JTE11968J
DOI: 10.1520/JTE11968J
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