TY - JOUR
T1 - Extraction of bulk metallic-glass yield strengths using tapered micropillars in micro-compression experiments
AU - Ye, J. C.
AU - Lu, J.
AU - Yang, Y.
AU - Liaw, P. K.
PY - 2010/3
Y1 - 2010/3
N2 - In this paper, a formula is derived based on the Mohr-Coulomb law to extract the bulk metallic-glass (BMG) yield strengths in the micro-compression experiments, accounting for the effects of a variety of geometrical parameters arising from the tapered micropillar geometries. The experimental results on three classes of BMGs, comprising the Zr-, Mg- and Fe-based BMGs, show that the yield strengths of the BMG micropillars exhibit a very weak size effect as compared with the literature data obtained from the micro-crystals. The validity of the derived formula is then checked through the comparison with the measurements from the nanoindentation and macro-compression experiments. © 2009 Elsevier Ltd. All rights reserved.
AB - In this paper, a formula is derived based on the Mohr-Coulomb law to extract the bulk metallic-glass (BMG) yield strengths in the micro-compression experiments, accounting for the effects of a variety of geometrical parameters arising from the tapered micropillar geometries. The experimental results on three classes of BMGs, comprising the Zr-, Mg- and Fe-based BMGs, show that the yield strengths of the BMG micropillars exhibit a very weak size effect as compared with the literature data obtained from the micro-crystals. The validity of the derived formula is then checked through the comparison with the measurements from the nanoindentation and macro-compression experiments. © 2009 Elsevier Ltd. All rights reserved.
KW - B. Glasses, metallic
KW - B. Mechanical properties
KW - E. Mechanical properties, theory
KW - F. Mechanical testing
UR - http://www.scopus.com/inward/record.url?scp=74649086397&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-74649086397&origin=recordpage
U2 - 10.1016/j.intermet.2009.08.011
DO - 10.1016/j.intermet.2009.08.011
M3 - RGC 21 - Publication in refereed journal
SN - 0966-9795
VL - 18
SP - 385
EP - 393
JO - Intermetallics
JF - Intermetallics
IS - 3
ER -