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A Facility for Precise Measurement Of Mechanical Properties At Elevated Temperatures

  • Physical & Mechanical Metallurgy
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Summary

A test facility consisting of an environmental chamber, a remote extensometer, and a miniature three-zone furnace has been developed for use with a computerized model 1116 Instron. Experiments can be done in either vacuum or inert gas. The temperature of the specimen is controlled from three 125-µm-diameter, bare-wire, type K thermocouples which are spot welded to the sample. Over the 2.5-cm-gage length, the temperature is constant to within 1°K, and there is negligible control ripple. A remote extensometer, which attaches to the shoulders of the sample, allows the strain to be measured continuously using a standard, clip-on strain gage.

Examples of tensile tests, creep tests, stress-drop tests, and stress relaxation, using Zr-2.5 wt.% Nb specimens at temperatures in the vicinity of 0.5 Tm, are presented.

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Authors
  1. Edward T. C. Ho
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  2. Stuart R. MacEwen
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Additional information

Editor’s Note: This article appears in Novel Techniques in Metal Deformation Testing, edited by R. H. Wagoner, The Metallurgical Society of AIME, Warrendale, Pennsylvania. Copyright 1983.

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Ho, E.T.C., MacEwen, S.R. A Facility for Precise Measurement Of Mechanical Properties At Elevated Temperatures. JOM 35, 25–29 (1983). https://doi.org/10.1007/BF03338201

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  • DOI: https://doi.org/10.1007/BF03338201

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