Formation Mechanisms of High-density Growth Twins in Aluminum with High Stacking-Fault Energy

被引：90

作者：

Bufford, D. ^{[1
]}

Liu, Y. ^{[1
]}

Zhu, Y. ^{[2
]}

Bi, Z. ^{[3
]}

Jia, Q. X. ^{[3
]}

Wang, H. ^{[2
]}

Zhang, X. ^{[1
]}

机构：

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

[2] Texas A&M Univ, Mat Sci & Engn Program, Dept Elect & Comp Engn, College Stn, TX 77843 USA

[3] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA

来源：

MATERIALS RESEARCH LETTERS | 2013年 / 1卷 / 01期

基金：

美国国家科学基金会;

关键词：

Aluminum; Interfaces; Mechanical Properties; Silver; Twin Boundaries; DEFORMATION TWINS; ULTRAHIGH-STRENGTH; NANOCRYSTALLINE; FCC; NUCLEATION; BOUNDARY; HARDNESS; DEFECTS; FILMS; CU;

D O I：

10.1080/21663831.2012.761654

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Nanotwins readily form in numerous face-centered-cubic (fcc) metals with low stacking-fault energy (SFE). However, growth twins rarely form in Al due to its high SFE, similar to 120-165 mJ/m(2). Here, using thin inter-layers or buffer layers of a low-SFE fcc metal (Ag), we overcome the SFE barrier and successfully grow high-density coherent and incoherent twin boundaries into Al. We identify three mechanisms that induce growth twins in Al and demonstrate enhanced mechanical strength in twinned Al. This study reveals an effective means that may be generalized to control growth twin formation in fcc metals with high SFE.

引用

页码：51 / 60

页数：10

共 64 条

[1] Strengthening in gold nanopillars with nanoscale twins [J].

Afanasyev, Konstantin A. ;

Sansoz, Frederic .

NANO LETTERS, 2007, 7 (07) :2056-2062

[2] Thermal stability of sputtered Cu films with nanoscale growth twins [J].

Anderoglu, O. ;

Misra, A. ;

Wang, H. ;

Zhang, X. .

JOURNAL OF APPLIED PHYSICS, 2008, 103 (09)

[3] Epitaxial nanotwinned Cu films with high strength and high conductivity [J].

Anderoglu, O. ;

Misra, A. ;

Wang, H. ;

Ronning, F. ;

Hundley, M. F. ;

Zhang, X. .

APPLIED PHYSICS LETTERS, 2008, 93 (08)

[4]

[Anonymous], 1967, THEORY DISLOCATIONS

[5] Deformation mechanism transitions in nanoscale fcc metals [J].

Asaro, RJ ;

Krysl, P ;

Kad, B .

PHILOSOPHICAL MAGAZINE LETTERS, 2003, 83 (12) :733-743

[6] Nanotwins and stacking faults in high-strength epitaxial Ag/Al multilayer films [J].

Bufford, D. ;

Bi, Z. ;

Jia, Q. X. ;

Wang, H. ;

Zhang, X. .

APPLIED PHYSICS LETTERS, 2012, 101 (22)

[7] High strength, epitaxial nanotwinned Ag films [J].

Bufford, D. ;

Wang, H. ;

Zhang, X. .

ACTA MATERIALIA, 2011, 59 (01) :93-101

[8] Dynamic observation of the FCC to 9R shear transformation in a copper Sigma=3 incoherent twin boundary [J].

Campbell, GH ;

Chan, DK ;

Medlin, DL ;

Angelo, JE ;

Carter, CB .

SCRIPTA MATERIALIA, 1996, 35 (07) :837-842

[9] The 112 lateral twin boundary in FCC materials [J].

Carter, CB ;

Medlin, DL ;

Angelo, JE ;

Mills, MJ .

INTERGRANULAR AND INTERPHASE BOUNDARIES IN MATERIALS, PT 1, 1996, 207- :209-212

[10] Deformation twinning in nanocrystalline aluminum [J].

Chen, MW ;

Ma, E ;

Hemker, KJ ;

Sheng, HW ;

Wang, YM ;

Cheng, XM .

SCIENCE, 2003, 300 (5623) :1275-1277

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