Tailoring nanostructured Cu/Cr multilayer films with enhanced hardness and tunable modulus
Tailoring nanostructured Cu/Cr multilayer films with enhanced hardness and tunable modulus
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定制具有增强硬度和可调模量的纳米结构铜/铬多层薄膜
DOI:
10.1016/j.msea.2012.02.061
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发表时间:
2012-05
期刊:
影响因子:
6.4
通讯作者:
Sun, J.
中科院分区:
文献类型:
--
作者:
Zhang, J. Y.;Niu, J. J.;Zhang, X.;Zhang, P.;Liu, G.;Zhang, G. J.;Sun, J.
Length-scale dependent hardness (H) and indentation modulus (E) are systematically investigated in nanostructured Cu/Cr multilayer films with a wide modulation period (λ) range from 5nm to 250nm. H is gradually increased with reducing λ down to ∼50nm, whereafter a λ-independent effect is shown. The theoretical analysis of confined dislocation gliding and interface barrier strength quantitatively assess the variation of H. The indentation modulus E, however, exhibits a non-monotonic evolution with λ and attains a maximum at the same critical λ of ∼50nm. This unusual variation in E is related to the formation of interfacial amorphous layers, and can be reasonably explained in terms of a competition between the enhancement effect induced by compressed out-of-plane interplanar spacing of the constituent layers and the reduction effect associated with free volume in the amorphous intermixing layer. This result offers great benefits in engineering ductile nanolaminates with high strength and low modulus by tailoring interfacial structure and/or introducing amorphous layers.
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影响因子:
6
作者:
Zhang, J. Y.;Liu, G.;Zhang, X.;Zhang, G. J.;Sun, J.;Ma, E.
通讯作者:
Ma, E.
影响因子:
3.7
作者:
G. Abadias;C. Jaouen;F. Martin;J. Pacaud;P. Djemia;F. Ganot
通讯作者:
G. Abadias;C. Jaouen;F. Martin;J. Pacaud;P. Djemia;F. Ganot
影响因子:
4
作者:
Kee-Won Kwon;Hoo-Jeong Lee;R. Sinclair
通讯作者:
Kee-Won Kwon;Hoo-Jeong Lee;R. Sinclair
影响因子:
2.7
作者:
C. Michaelsen;C. Gente;R. Bormann
通讯作者:
C. Michaelsen;C. Gente;R. Bormann
DOI:
10.4028/www.scientific.net/kem.81-83.3
发表时间:
1993-01
期刊:
Key Engineering Materials
影响因子:
--
作者:
A. van den Beukel
通讯作者:
A. van den Beukel