Interfacial Structures Governed Plastic Deformation Behaviors in Metallic Multilayers

doi:10.1007/s40195-016-0377-2

金属学报英文版 ›› 2016, Vol. 29 ›› Issue (2): 199-204.DOI: 10.1007/s40195-016-0377-2

收稿日期:2015-08-30 修回日期:2015-12-28 出版日期:2016-02-08 发布日期:2016-02-20

Interfacial Structures Governed Plastic Deformation Behaviors in Metallic Multilayers

Ming-Zhen Wei^1,², Zhen-Hua Cao¹(), Xiang-Kang Meng¹

1 Institute of Materials Engineering, National Laboratory of Solid State Microstructures, College of Engineering and Applied Sciences, Nanjing University, Nanjing 210093,China
2 Department of Physics, School of Science, Linyi University,Linyi 276000, China

Received:2015-08-30 Revised:2015-12-28 Online:2016-02-08 Published:2016-02-20

摘要/Abstract

Abstract:

In this work, we have investigated the mechanical properties of Cu/Ta, Ag/Cu and Ag/Nb multilayers with different heterogeneous interfaces. The results suggest that when individual layer thickness (h) is larger than 5-10 nm, the hardness/strength of three different multilayer systems has the similar length scale effect with decreasing layer thickness, while when h ≤ 5 nm, the three multilayer systems show remarkably different plastic deformation behaviors. The strength curves exhibit the variation trends of unchanging, softening and increasing corresponding to Cu/Ta, Ag/Cu and Ag/Nb multilayers, respectively. The microstructure analysis shows that three kinds of multilayers have totally different interfacial structures, which lead to the different strengthening or softening mechanisms.

Key words: Metallic, multilayers, Plastic, deformation, Interfacial, structures, Strengthening, mechanism

. [J]. 金属学报英文版, 2016, 29(2): 199-204.

Ming-Zhen Wei, Zhen-Hua Cao, Xiang-Kang Meng. Interfacial Structures Governed Plastic Deformation Behaviors in Metallic Multilayers[J]. Acta Metallurgica Sinica (English Letters), 2016, 29(2): 199-204.

图/表 6

Table 1 Comparison of three different multilayer systems

Multilayers	Crystal lattice	Interface misfit (%)^a	Interface type
Cu/Ta	fcc/tet	-	Incoherent
Ag/Cu	fcc/fcc	12	Semi-coherent
Ag/Nb	fcc/bcc	1	Coherent

Fig. 1 Typical load-displacement curves of Cu/Ta, Ag/Cu and Ag/Nb multilayers with h = 5 nm

Fig. 2 a Hardness of Cu/Ta, Ag/Cu and Ag/Nb multilayers plotted as a function of h; b strength plotted as a function of h -1/2

Fig. 3 Bright field cross-sectional TEM a and HRTEM b images of Cu/Ta multilayer with h = 5 nm (the light gray layers indicate the Cu layers, and the dark gray layers indicate the Ta layers; the inset in a is the corresponding SAED pattern)

Fig. 4 Bright field cross-sectional TEM a and HRTEM b images of Ag/Cu multilayer with h = 5 nm (the inset in a is the corresponding SAED pattern)

Fig. 5 Bright field cross-sectional TEM a and HRTEM b images of Ag/Nb multilayer with h = 5 nm (the light gray layers indicate the Nb layers, and the dark gray layers indicate the Ag layers; the inset in a is the corresponding SAED pattern)

参考文献 16

[1]	S.L. Lehoczky, J. Appl. Phys. 49, 5479(1978)
[2]	W.M.C. J. Appl. Phys. 48,876(1977)
[3]	A. Misra, M. Verdier, Y.C. Lu, H. Kung, T.E. Mitchell, M.Nastasi, J.D. Embury, Scr. Mater. 39, 555(1998)
[4]	M.Z. Wei, Z.H. Cao, J. Shi, G.J. Pan, L.J. Xu, X.K. Meng,Mater. Sci. Eng. A 598, 355 (2014)
[5]	B.M. Clemens, H. Kung, S.A. Barnett, MRS Bull. 24, 20(1999)
[6]	G.S. Was, T. Foecke, Thin Solid Films 286, 1 (1996)
[7]	E.O. Hall, Proc. Phys. Soc. Lond. B 64, 747 (1951)
[8]	N.J. Petch, J. Iron Steel Inst. 174, 25(1953)
[9]	P.M. Anderson, C. Li, Nanostruct. Mater. 5, 349(1995)
[10]	L.H. Friedman, D.C. Chrzan, Phys. Rev. Lett. 81, 2715(1998)
[11]	J.D. Embury, J.P. Hirth, Acta Metall. Mater. 42, 2051 (1994)
[12]	M.A. Phillips, B.M. Clemens, W.D. Nix, Acta Mater. 51, 3157(2003)
[13]	J.S. Koehler, Phys. Rev. B 2, 547 (1970)
[14]	A. Misra, J.P. Hirth, H. Kung, Philos. Mag. A 82, 2935 (2002)
[15]	S.I. Rao, P.M. Hazzledine, Philos. Mag. A 80, 2011 (2000)
[16]	R.C. Cammarata, K. Sieradzki, F. Spaepen, J. Appl. Phys. 87,1227(2000)

Interfacial Structures Governed Plastic Deformation Behaviors in Metallic Multilayers

RichHTML

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

图/表 6

参考文献 16

相关文章 0

编辑推荐

Metrics

本文评价