Application of Automated Ball Indentation for Property Measurement of Degraded Zr2.5Nb

DOI: 10.4236/jmmce.2011.107051   PDF   HTML     5,583 Downloads   6,707 Views   Citations

Abstract

In this work, Automated Ball Indentation (ABI) technique is based on load controlled multiple indentations (at a single penetration location) of a polished surface by a spherical indenter (0.7 to 1.46 mm) and indentation depth is progressively increased to a maximum user specified limit with intermediate partial unloading. This technique permits measurement of yield strength, stress-strain curve, strength coefficient and strain hardening exponent. ABI Testing was carried out on samples of Zr-Nb2.5 (Pressure Tube Material) with different heat treatment conditions in which temperature was varying (550 degree to 900 degree and retention time was varying 0.5 to 6 hour and furnace cooled. For all these test material and conditions, the ABI derived results were in very good agreement with those from conventional standard test methods.

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K. Sharma, P. Singh, V. Bhasin and K. Vaze, "Application of Automated Ball Indentation for Property Measurement of Degraded Zr2.5Nb," Journal of Minerals and Materials Characterization and Engineering, Vol. 10 No. 7, 2011, pp. 661-669. doi: 10.4236/jmmce.2011.107051.

Conflicts of Interest

The authors declare no conflicts of interest.

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