Rate Dependence of Serrated Flow During Nanoindentation of a Bulk Metallic Glass
2002 ◽
Vol 17
(7)
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pp. 1651-1654
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Keyword(s):
Plastic deformation of Pd–40Ni–20P bulk metallic glass (BMG) was investigated by instrumented nanoindentation experiments over a broad range of indentation strain rates. At low rates, the load–displacement curves during indentation exhibited numerous serrations or pop-ins, but these serrations became less prominent as the indentation rate was increased. Using the tip velocity during pop-in as a gauge of serration activity, we found that serrated flow is only significant at indentation strain rates below about 1–10/s. This result suggests a transition in plastic flow behavior at high strain rates, in agreement with prior studies of BMGs under different modes of loading.
2017 ◽
Vol 460
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pp. 47-53
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2007 ◽
Vol 22
(2)
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pp. 258-263
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Keyword(s):
2007 ◽
Vol 22
(2)
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pp. 368-373
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Keyword(s):
2017 ◽
Vol 24
(4)
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pp. 475-482
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2010 ◽
Vol 495
(1)
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pp. 50-54
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2018 ◽
Vol 484
◽
pp. 30-35
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2010 ◽
Vol 504
◽
pp. S65-S68
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2013 ◽
Vol 574
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pp. 54-59
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