Nanoindentation creep behavior of Cu–Zr metallic glass films
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In: Materials Research Letters [Elektronische Ressource], Vol. 6.2018, No. 1, 02.01.2018, p. 22-28.
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TY - JOUR
T1 - Nanoindentation creep behavior of Cu–Zr metallic glass films
AU - Wang, Yaqiang
AU - Zhang, Jinyu
AU - Wu, Kai
AU - Liu, Gang
AU - Kiener, Daniel
AU - Sun, Jun
PY - 2018/1/2
Y1 - 2018/1/2
N2 - The size-dependent hardness, strain-rate sensitivity (SRS) and shear transformation zone (STZ) volume of co-sputtered Cu–Zr metallic glass films with film thickness h spanning from 1000 to 3000 nm were systematically investigated by nanoindentation creep tests at room temperature. Experimental results manifested an exceptional decrease in hardness and a monotonic increment in SRS (or a monotonic decline in STZ volume) with reducing h. The deformation mechanism could be rationalized in light of more free volume combined with smaller STZs in thinner films, which likely trigger the strain-softening behavior. Moreover, STZs and deformation-induced devitrification promote the homogeneous-like plastic flow.
AB - The size-dependent hardness, strain-rate sensitivity (SRS) and shear transformation zone (STZ) volume of co-sputtered Cu–Zr metallic glass films with film thickness h spanning from 1000 to 3000 nm were systematically investigated by nanoindentation creep tests at room temperature. Experimental results manifested an exceptional decrease in hardness and a monotonic increment in SRS (or a monotonic decline in STZ volume) with reducing h. The deformation mechanism could be rationalized in light of more free volume combined with smaller STZs in thinner films, which likely trigger the strain-softening behavior. Moreover, STZs and deformation-induced devitrification promote the homogeneous-like plastic flow.
KW - hardness
KW - Metallic glass films
KW - nanoindentation
KW - strain-rate sensitivity
UR - http://www.scopus.com/inward/record.url?scp=85031928718&partnerID=8YFLogxK
U2 - 10.1080/21663831.2017.1383946
DO - 10.1080/21663831.2017.1383946
M3 - Article
AN - SCOPUS:85031928718
VL - 6.2018
SP - 22
EP - 28
JO - Materials Research Letters [Elektronische Ressource]
JF - Materials Research Letters [Elektronische Ressource]
SN - 2166-3831
IS - 1
ER -
