Application of Automated Ball Indentation for Property Measurement of Degraded Zr2.5Nb ()
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.
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.
References
[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 et.al., J Mech. Phy of Solids, 53 (2005) 2037.
|
[11]
|
G. Das et.al. J. Mat. Res. Adv. Tech., Metallkunde, 95 (2004) 1120.
|
[12]
|
K. Sharma, V. Bhasin & A K Ghosh, JJMIE, 4 (2010).
|