High strength Mg/Nb nanolayer composites

被引：97

作者：

Ham, B. ^{[1
]}

Zhang, X. ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Mech Engn, Mat Sci & Engn Program, College Stn, TX 77843 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 4-5期

基金：

美国国家科学基金会;

关键词：

Mg/Nb multilayers; Hardness; Microstructure; MECHANICAL-PROPERTIES; METALLIC MULTILAYERS; DEFORMATION; CU; MAGNESIUM; HARDNESS; SCALE; MICROSTRUCTURE; REFINEMENT; STABILITY;

D O I：

10.1016/j.msea.2010.10.101

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report on the microstructure and mechanical properties of sputter-deposited Mg/Nb multilayer films, with individual layer thickness, h, of 2.5-200 nm. High resolution TEM studies reveal the formation of metastable Mg with body-centered cubic structure along interface in multilayers with h of 5 nm or less. Ash decreases, the hardnesses of multilayers increase and approach a maximum of similar to 2.7 GPa at a few nm layer thickness. Size dependent strengthening in Mg/Nb multilayers is compared to that in Mg with various grain sizes, and Cu/Nb and Al/Nb multilayers, and strengthening mechanisms in Mg/Nb multilayers are discussed. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：2028 / 2033

页数：6

共 33 条

[1] HALL-PETCH RELATIONS FOR MULTILAYERED MATERIALS [J].

ANDERSON, PM ;

LI, C .

NANOSTRUCTURED MATERIALS, 1995, 5 (03) :349-362

[2] Stability of f.c.c. titanium in titanium/aluminum multilayers [J].

Banerjee, R ;

Dregia, SA ;

Fraser, HL .

ACTA MATERIALIA, 1999, 47 (15-16) :4225-4231

[3] MODEL OF SUPERLATTICE YIELD STRESS AND HARDNESS ENHANCEMENTS [J].

CHU, X ;

BARNETT, SA .

JOURNAL OF APPLIED PHYSICS, 1995, 77 (09) :4403-4411

[4] Structure and strength of multilayers [J].

Clemens, BM ;

Kung, H ;

Barnett, SA .

MRS BULLETIN, 1999, 24 (02) :20-26

[5] Polymorphic phase stability in thin multilayers [J].

Dregia, SA ;

Banerjee, R ;

Fraser, HL .

SCRIPTA MATERIALIA, 1998, 39 (02) :217-223

[6] ON DISLOCATION STORAGE AND THE MECHANICAL RESPONSE OF FINE-SCALE MICROSTRUCTURES [J].

EMBURY, JD ;

HIRTH, JP .

ACTA METALLURGICA ET MATERIALIA, 1994, 42 (06) :2051-2056

[7] Mechanical properties of sputtered Cu/V and Al/Nb multilayer films [J].

Fu, E. G. ;

Li, Nan ;

Misra, A. ;

Hoagland, R. G. ;

Wang, H. ;

Zhang, X. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 493 (1-2) :283-287

[8] STRUCTURAL REFINEMENT OF SUPERLATTICES FROM X-RAY-DIFFRACTION [J].

FULLERTON, EE ;

SCHULLER, IK ;

VANDERSTRAETEN, H ;

BRUYNSERAEDE, Y .

PHYSICAL REVIEW B, 1992, 45 (16) :9292-9310

[9] Microstructure and tensile property of the ECAPed pure magnesium [J].

Gan, W. M. ;

Zheng, M. Y. ;

Chang, H. ;

Wang, X. J. ;

Qiao, X. G. ;

Wu, K. ;

Schwebke, B. ;

Brokmeier, H. -G. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2009, 470 (1-2) :256-262

[10] On the role of weak interfaces in blocking slip in nanoscale layered composites [J].

Hoagland, R. G. ;

Hirth, J. P. ;

Misra, A. .

PHILOSOPHICAL MAGAZINE, 2006, 86 (23) :3537-3558

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