Fabrication of bulk nanostructured silver material from nanopowders using shockwave consolidation technique

被引：34

作者：

Zhang, L. ^{[1
]}

Elwazri, A. M. ^{[1
]}

Zimmerly, T. ^{[2
]}

Brochu, M. ^{[1
]}

机构：

[1] McGill Univ, Dept Min Metals & Mat Engn, Montreal, PQ H3A 2B2, Canada

[2] New Mexico Inst Min & Technol, Energet Mat Res & Testing Ctr, Socorro, NM 87801 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 487卷 / 1-2期

关键词：

bulk nanomaterials; silver; mechanical properties; dynamic consolidation; explosive compaction; shockwave compaction; isodynamic compaction;

D O I：

10.1016/j.msea.2007.10.008

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In the present study, it was established that a pressure level of similar to 2 GPa applied to nanoparticles can generate metallurgical bonds within an agglomerate. The shockwave consolidation technique was therefore used to produce bulk nanostructured silver samples from nano-sized powders. The grain size evolution was characterized during compaction and the mechanical properties of the bulk components were analyzed using X-ray diffraction, transmission electron microscopy and microhardness and compression testing at room temperature. Upon consolidation, an average grain size of 49 +/- 22 nm was measured and constant hardness across the diameter with an average of 83 HV was obtained. Compression results showed strength of approximately 390 +/- 10 MPa and ductility of 22 +/- 2%. This study therefore demonstrates the possibility of fabricating reliable bulk nanostructured materials by imposing high pressure on nano-sized powders. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：219 / 227

页数：9

共 31 条

[11] DYNAMIC CONSOLIDATION OF METASTABLE NANOCRYSTALLINE POWDERS [J].

KORTH, GE ;

WILLIAMSON, RL .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1995, 26 (10) :2571-2578

[12] TENSILE-STRESS STRAIN CURVES OF POLYCRYSTALLINE SILVER [J].

KOVACS, I ;

VOROS, G .

PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, 1994, 142 (01) :59-67

[13] Grain growth of nanocrystalline Ni powders prepared by cryomilling [J].

Lee, J ;

Zhou, F ;

Chung, KH ;

Kim, NJ ;

Laverina, EJ .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2001, 32 (12) :3109-3115

[14]

LINSE VD, 1983, NMAB394, P1

[15] Eight routes to improve the tensile ductility of bulk nanostructured metals and alloys [J].

Ma, E .

JOM, 2006, 58 (04) :49-53

[16]

Meyers M.A., 1988, SHOCK WAVES IND APPL, P265

[17] AN IMPROVED METHOD FOR SHOCK CONSOLIDATION OF POWDERS [J].

MEYERS, MA ;

WANG, SL .

ACTA METALLURGICA, 1988, 36 (04) :925-936

[18] Shock consolidation: Microstructurally-based analysis and computational modeling [J].

Meyers, MA ;

Benson, DJ ;

Olevsky, EA .

ACTA MATERIALIA, 1999, 47 (07) :2089-2108

[19] Mechanical properties of nanocrystalline materials [J].

Meyers, MA ;

Mishra, A ;

Benson, DJ .

PROGRESS IN MATERIALS SCIENCE, 2006, 51 (04) :427-556

[20] Dynamic compaction of aluminum nanocrystals [J].

Nieh, TG ;

Luo, P ;

Nellis, W ;

Lesuer, D ;

Benson, D .

ACTA MATERIALIA, 1996, 44 (09) :3781-3788

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