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


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.

Share and Cite:

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.


[1] E. Meyer and Z. Ver, Dtsch. Ing. 52 (1908).
[2] D. Tabor The Hardness of Metals; 1951
[3] F. M. Haggag, American Society for Testing and Materials, Philadelphia, pp 27-44, 1993.
[4] K. L. Murthy, P.Q. Mirgania, and M. D. Mathew, International journal of Pressure Vessel and Piping, 76 (1999) 361.
[5] F M Haggag and R K Nanstad, PVP, 170 (1989).
[6] M D Mathew, K L Murthy, L M Lietzan and V N Shah, A269 (1999) 186.
[7] T. S. Byan, J. W. Kim, J. H. Hong, Journal of Nuclear Materials, 252 (1998) 187.
[8] Y H Lee, W J Ji and D Kwon, Experimental Mechanics, 44 (2004).
[9] Ghosh Sabita et. al. Mater. Lett, 62 (2008) 2619.
[10] Hyungyil Lee, J Mech. Phy of Solids, 53 (2005) 2037.
[11] G. Das J. Mat. Res. Adv. Tech., Metallkunde, 95 (2004) 1120.
[12] K. Sharma, V. Bhasin & A K Ghosh, JJMIE, 4 (2010).

Copyright © 2024 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.