Al-Mg alloy engineered with bimodal grain size for high strength and increased ductility

被引：313

作者：

Witkin, D

Lee, Z

Rodriguez, R

Nutt, S

Lavernia, E

机构：

[1] Univ Calif Irvine, Dept Chem Engn & Mat Sci, Irvine, CA 92697 USA

[2] Univ So Calif, Dept Mat Sci, Los Angeles, CA 90089 USA

[3] Univ Calif Davis, Dept Chem Engn & Mat Sci, Davis, CA 95616 USA

来源：

SCRIPTA MATERIALIA | 2003年 / 49卷 / 04期

关键词：

aluminum alloys; nanocrystalline materials; mechanical properties; MECHANICAL-BEHAVIOR; NANOCRYSTALLINE; MICROSTRUCTURE; ALUMINUM; POWDERS; GROWTH;

D O I：

10.1016/S1359-6462(03)00283-5

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Al-7.5Mg powders were cryomilled, then consolidated and extruded to produce bulk nanostructured material. The extrusions had a tensile yield strength of 641 MPa and an ultimate strength of 847 MPa. Additional samples were prepared by combining cryomilled powder unmilled Al-7.5Mg, resulting in extrusions with high strength and increased ductility. (C) 2003 Acta Materialia Inc. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：297 / 302

页数：6

共 22 条

[1]

[Anonymous], 1988, P 9 RIS INT S MET MA

[2] Microstructure and high temperature deformation of an ECAE processed 5083 Al alloy [J].

Dupuy, L ;

Blandin, JJ ;

Rauch, EF .

SUPERPLASTICITY IN ADVANCED MATERIALS, ICSAM-2000, 2001, 357-3 :437-442

[3] ON THE ROOM-TEMPERATURE GRAIN-GROWTH IN NANOCRYSTALLINE COPPER [J].

GERTSMAN, VY ;

BIRRINGER, R .

SCRIPTA METALLURGICA ET MATERIALIA, 1994, 30 (05) :577-581

[4] Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions [J].

Hasegawa, H ;

Komura, S ;

Utsunomiya, A ;

Horita, Z ;

Furukawa, M ;

Nemoto, M ;

Langdon, TG .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1999, 265 (1-2) :188-196

[5] The mechanical behavior of a cryomilled Al-10Ti-2Cu alloy [J].

Hayes, RW ;

Rodriguez, R ;

Lavernia, EJ .

ACTA MATERIALIA, 2001, 49 (19) :4055-4068

[6] Ductility of nanostructured materials [J].

Koch, CC ;

Morris, DG ;

Lu, K ;

Inoue, A .

MRS BULLETIN, 1999, 24 (02) :54-58

[7] Synthesis of nanostructured materials by mechanical milling: Problems and opportunities [J].

Koch, CC .

NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :13-22

[8]

LEE Z, 2002, MAT RES SOC P FALL

[9] Microsample tensile testing of nanocrystalline metals [J].

Legros, M ;

Elliott, BR ;

Rittner, MN ;

Weertman, JR ;

Hemker, KJ .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 2000, 80 (04) :1017-1026

[10]

Luton M.J., 1989, Materials Research Society Symposium Proceedings, V132, P79, DOI DOI 10.1557/PROC-132-79

← 1 2 3 →