Microstructural features and mechanical properties of Al 5083/SiCp metal matrix nanocomposites produced by high energy ball milling and spark plasma sintering

被引：109

作者：

Bathula, Sivaiah ^{[1
]}

Anandani, R. C. ^{[1
]}

Dhar, Ajay ^{[1
]}

Srivastava, A. K. ^{[1
]}

机构：

[1] CSIR Natl Phys Lab, New Delhi 110012, India

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2012年 / 545卷

关键词：

Powder metallurgy; Electron microscopy; Al 5083/10 wt.% SiCp nanocomposite; Spark plasma sintering; Interfaces; REINFORCED ALUMINUM; COMPOSITES; SIZE;

D O I：

10.1016/j.msea.2012.02.095

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Al 5083 alloy powder with 10 wt.% (similar to 8.43 vol.%) of silicon carbide (SiCp) nanoparticulates having size of similar to 20 nm were milled using a high-energy planetary ball mill to produce Al 5083/10 wt.% SiCp (Al 5083/SiCp) nanocomposite. Subsequently, the milled powders were consolidated and sintered by employing spark plasma sintering (SPS) technique in order to attain the near theoretical densification while retaining the nanostructure of Al 5083 matrix embedded with uniformly distributed SiCp. High resolution transmission microscopy (HR-TEM) analysis revealed the grain morphology and grain size of the Al 5083 matrix along with the interfacial microstructure between Al 5083 matrix and SiCp particulates. The crystallite size of ball milled Al 5083 matrix was observed to be similar to 25 nm and was coarsened up to 30 nm after rapid consolidation and sintering using SPS. Compressive strength and elastic modulus of Al 5083/SiCp metal matrix nanocomposites was significantly increased to that of the un-reinforced Al 5083 alloy. Nanoindentation measurements on these nanocomposites demonstrated the hardness of similar to 280 HV with an elastic modulus of 126 GPa. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：97 / 102

页数：6

共 29 条

[1] Fundamental aspects of hot isostatic pressing: An overview [J].

Atkinson, HV ;

Davies, S .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2000, 31 (12) :2981-3000

[2]

BENJAMIN JS, 1970, METALL TRANS, V1, P2943

[3] The influence of grain size on the mechanical properties of nanocrystalline aluminium [J].

Bonetti, E ;

Pasquini, L ;

Sampaolesi, E .

NANOSTRUCTURED MATERIALS, 1997, 9 (1-8) :611-614

[4] MICROSTRUCTURAL ANALYSIS OF HOT ISOSTATICALLY PRESSED AL-SIC [J].

BRONSVELD, PM ;

BRUINSMA, P ;

DEHOSSON, JT ;

SARGENT, MA ;

ALSEM, WHM .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 135 :77-81

[5]

Cullity BD, 2001, Elements of X-ray Diffraction

[6] The studies of crystallite size and microstrains in aluminum powder prepared by mechanical milling [J].

Daly, R. ;

Khitouni, M. ;

Kolsi, A. W. ;

Njah, N. .

PHYSICA STATUS SOLIDI C - CURRENT TOPICS IN SOLID STATE PHYSICS, VOL 3, NO 9, 2006, 3 (09) :3325-+

[7]

Davis J., 2002, ASM Specialty Handbook: Aluminum and Aluminum Alloys

[8] A METHOD FOR IN-PROCESS FAILURE PREDICTION IN COLD UPSET FORGING [J].

ETTOUNEY, O ;

HARDT, DE .

JOURNAL OF ENGINEERING FOR INDUSTRY-TRANSACTIONS OF THE ASME, 1983, 105 (03) :161-167

[9]

HAN BQ, 2005, METALL MATER TRANS A, V36, P1

[10] MECHANICAL-PROPERTIES OF AL-SIC COMPOSITES MADE BY RESISTANCE SINTERING OF MECHANICALLY ALLOYED POWDERS [J].

HONG, SJ ;

KAO, PW .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1991, 148 (02) :189-195

← 1 2 3 →