Journal
MATERIALS & DESIGN
Volume 31, Issue 3, Pages 1563-1566Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2009.09.046
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Funding
- National Natural Science Foundation of China [50771040, 50904021, 10732010]
- Foundation of China Postdoctor [20090450999]
- Hi-Tech Research and Development Program of China [2007AA03Z518]
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It has been found that the hardness measured from different metallic glassy samples using the Oliver and Pharr scheme [Oliver WC, Pharr GM. An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J Mater Res 1992:7:1564-831 [1] shows an apparent indentation size effect (ISE), i.e., the hardness decreases as indentation depth increases. A similar ISE of the pile-up ratio has also been found. A ribbon glassy sample fabricated at a larger cooling rate shows larger pile-up and lower hardness value than a bulk glassy sample under the same conditions. The ISE of hardness can be effectively eliminated by taking into account the different pile-up ratios at different indentation depths. (C) 2009 Elsevier Ltd. All rights reserved.
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