Enhanced tensile properties of Al matrix composites reinforced with β-Si3N4 whiskers

被引：30

作者：

Zhang, Chenxu ^{[1
,2
]}

Yin, Jinwei ^{[1
]}

Yao, Dongxu ^{[1
]}

Zuo, Kaihui ^{[1
]}

Xia, Yongfeng ^{[1
]}

Liang, Hanqin ^{[1
]}

Zeng, Yuping ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2017年 / 102卷

基金：

中国国家自然科学基金;

关键词：

Metal-matrix composites (MMCs); Interface/interphase; Mechanical properties; Microstructural analysis; SILICON NITRIDE WHISKERS; MECHANICAL-PROPERTIES; STRENGTHENING MECHANISMS; THERMAL-CONDUCTIVITY; ALUMINUM COMPOSITES; FRACTURE-TOUGHNESS; BEHAVIOR; MICROSTRUCTURE; TEMPERATURE; FABRICATION;

D O I：

10.1016/j.compositesa.2017.07.025

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Al matrix composites reinforced with beta-Si3N4 whiskers (beta-Si(3)N(4)w) were fabricated by hot pressing method. The microstructures showed that the whiskers were uniformly dispersed in the matrix and the Al/beta-Si3N4 interface was well bonded without interface reaction. Effects of beta-Si(3)N(4)w content and sintering parameters on the densification and tensile behavior of composites were investigated. The results indicated that beta-Si(3)N(4)w could both enhance the ultimate tensile strength (UTS) and maintain the ductility of Al matrix when the whisker content was 5 vol%, corresponding to an elongation at break and an UTS of 21.2% and 239 MPa, respectively. However, higher whisker content could improve UTS of composites to the maximum value of 312 MPa, which was 158 MPa higher than pure Al, while reducing elongation of composites. The fracture mechanism changed from ductile fracture to a combination of both ductile and brittle fracture mechanism with the increase of whisker content. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：145 / 153

页数：9

共 50 条

[1]

Ahn JJ, 2003, J COMPOS MATER, V37, P1083, DOI [10.1177/0021998303037012004, 10.1177/002199803033449]

[2] Effect of mechanical alloying process on mechanical properties of α-Si3N4 reinforced aluminum-based composite materials [J].

Arik, Halil .

MATERIALS & DESIGN, 2008, 29 (09) :1856-1861

[3]

Chawla N, 2001, ADV ENG MATER, V3, P357, DOI 10.1002/1527-2648(200106)3:6<357::AID-ADEM357>3.0.CO

[4]

2-I

[5] Processing and properties of magnesium containing a dense uniform dispersion of nanoparticles [J].

Chen, Lian-Yi ;

Xu, Jia-Quan ;

Choi, Hongseok ;

Pozuelo, Marta ;

Ma, Xiaolong ;

Bhowmick, Sanjit ;

Yang, Jenn-Ming ;

Mathaudhu, Suveen ;

Li, Xiao-Chun .

NATURE, 2015, 528 (7583) :539-+

[6] Grain size effect on the strengthening behavior of aluminum-based composites containing multi-walled carbon nanotubes [J].

Choi, H. J. ;

Shin, J. H. ;

Bae, D. H. .

COMPOSITES SCIENCE AND TECHNOLOGY, 2011, 71 (15) :1699-1705

[7] AN EXPERIMENTAL AND NUMERICAL STUDY OF DEFORMATION IN METAL CERAMIC COMPOSITES [J].

CHRISTMAN, T ;

NEEDLEMAN, A ;

SURESH, S .

ACTA METALLURGICA, 1989, 37 (11) :3029-3050

[8] THE WETTING OF SOLIDS BY MOLTEN METALS AND ITS RELATION TO THE PREPARATION OF METAL-MATRIX COMPOSITES [J].

DELANNAY, F ;

FROYEN, L ;

DERUYTTERE, A .

JOURNAL OF MATERIALS SCIENCE, 1987, 22 (01) :1-16

[9] Stochastic analysis of the fracture toughness of polymeric nanoparticle composites using polynomial chaos expansions [J].

Hamdia, Khader M. ;

Silani, Mohammad ;

Zhuang, Xiaoying ;

He, Pengfei ;

Rabczuk, Timon .

INTERNATIONAL JOURNAL OF FRACTURE, 2017, 206 (02) :215-227

[10] Fracture toughness of polymeric particle nanocomposites: Evaluation of models performance using Bayesian method [J].

Hamdia, Khader M. ;

Zhuang, Xiaoying ;

He, Pengfei ;

Rabczuk, Timon .

COMPOSITES SCIENCE AND TECHNOLOGY, 2016, 126 :122-129

← 1 2 3 4 5 →