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RESEARCH PAPERS

Survey of Various Special Tests Used to Determine Elastic, Plastic, and Rupture Properties of Metals at Elevated Temperatures

[+] Author and Article Information
F. Garofalo

U. S. Steel Corporation Research Center, Monroeville, Pa.

J. Basic Eng 82(4), 867-880 (Dec 01, 1960) (14 pages) doi:10.1115/1.3662786 History: Received August 13, 1959; Online November 04, 2011

Abstract

Testing techniques employed in determining the elastic moduli, that is, Young’s modulus, shear modulus, and Poisson’s ratio, at room and elevated temperatures are described. These techniques depend on static or dynamic measurements. A comparison and an analysis of test results determined by these two methods are presented. The effect of composition, grain size, and various transformations on the elastic moduli or their temperature dependence is discussed. A review of techniques and experimental data on the effect of high strain rates on plastic and rupture behavior of metals, and alloys at elevated temperatures is presented. It is shown that recovery effects explain qualitatively the results obtained. A brief description of the various stages of recovery is also presented. The variation of hardness with temperature is discussed for pure metals and alloys, including a description of a typical hot-hardness tester. The relationship between hardness and tensile strength, creep, and creep-rupture behavior is briefly summarised. The use of the hot-hardness tester as a research tool for following solid-state reactions at elevated temperatures is discussed. These reactions may depend on temperature, time, or plastic strain or a combination of these.

Copyright © 1960 by ASME
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