Influence of particle size and spatial distribution of B4C reinforcement on the microstructure and mechanical behavior of precipitation strengthened Al alloy matrix composites

被引：100

作者：

Wu, Chuandong ^{[1
,2
]}

Ma, Kaka ^{[3
]}

Wu, Jialu ^{[1
]}

Fang, Pan ^{[1
]}

Luo, Guoqiang ^{[1
]}

Chen, Fei ^{[1
]}

Shen, Qiang ^{[1
]}

Zhang, Lianmeng ^{[1
]}

Schoenung, Julie M. ^{[2
]}

Lavernia, Enrique J. ^{[2
]}

机构：

[1] Wuhan Univ Technol, State Key Lab Adv Technol Mat Synth & Proc, Wuhan 430070, Peoples R China

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

[3] Colorado State Univ, Dept Mech Engn, Ft Collins, CO 80523 USA

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 675卷

基金：

中国国家自然科学基金;

关键词：

Metal matrix composites; Reinforcement; Strengthening mechanism; Fracture mechanism; HIGH-VOLUME FRACTION; DISLOCATION GENERATION; POWDER-METALLURGY; AGING BEHAVIOR; ALUMINUM; TEMPERATURE; DEFORMATION; INTERFACES; FRACTURE;

D O I：

10.1016/j.msea.2016.08.062

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report on an investigation of the influence of reinforcement particle size on the microstructure and mechanical behavior of Al metal matrix composites. In our work, Al 7075/B4C composites containing three types of B4C particle sizes (56.9 mu m, 4.2 mu m and 2.0 mu m) were synthesized and studied. For a constant value of volume fraction of B4C, the composite with coarse reinforcement particles exhibited a relatively homogeneous and discrete distribution of the B4C particles while the composites with fine reinforcement exhibited agglomeration of the B4C particles. The composite with the smallest B4C particles possessed the highest yield strength and fracture strength. Quantitative analysis of the strengthening mechanisms revealed that smaller B4C particles lead to larger values in strain gradient strengthening as well as CTE mismatch strengthening, which are significantly correlated to the geometrically necessary dislocations caused by the presence of B4C. In addition, the different spatial distributions of the B4C particles contributed to different fracture mechanisms in the composites. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：421 / 430

页数：10

共 46 条

[1] DISLOCATION GENERATION DUE TO DIFFERENCES BETWEEN THE COEFFICIENTS OF THERMAL-EXPANSION [J].

ARSENAULT, RJ ;

SHI, N .

MATERIALS SCIENCE AND ENGINEERING, 1986, 81 (1-2) :175-187

[2] WORK HARDENING OF DISPERSION-HARDENED CRYSTALS [J].

ASHBY, MF .

PHILOSOPHICAL MAGAZINE, 1966, 14 (132) :1157-&

[3] DEFORMATION OF PLASTICALLY NON-HOMOGENEOUS MATERIALS [J].

ASHBY, MF .

PHILOSOPHICAL MAGAZINE, 1970, 21 (170) :399-&

[4] WORK-HARDENING OF COPPER-SILICA .5. EQUILIBRIUM PLASTIC RELAXATION BY SECONDARY DISLOCATIONS [J].

BROWN, LM ;

STOBBS, WM .

PHILOSOPHICAL MAGAZINE, 1976, 34 (03) :351-372

[5] On the role of matrix grain size and particulate reinforcement on the hardness of powder metallurgy Al-Mg-Si/MOSi2 composites [J].

Corrochano, J. ;

Lieblich, M. ;

Ibanez, J. .

COMPOSITES SCIENCE AND TECHNOLOGY, 2009, 69 (11-12) :1818-1824

[6] Temperature and pressure dependences of the elastic properties of ceramic boron carbide (B4C) [J].

Dodd, SP ;

Saunders, GA ;

James, B .

JOURNAL OF MATERIALS SCIENCE, 2002, 37 (13) :2731-2736

[7] Effects of particle size, volume fraction, orientation and distribution on the high temperature compression and dynamical recrystallization behaviors of particle-containing alloys [J].

Guo, M. X. ;

Wang, M. P. .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2012, 546 :15-25

[8] Effect of clustering on the mechanical properties of SiC particulate-reinforced aluminum alloy 2024 metal matrix composites [J].

Hong, SJ ;

Kim, HM ;

Huh, D ;

Suryanarayana, C ;

Chun, BS .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2003, 347 (1-2) :198-204

[9] Microstructural investigation on B4C/Al-7093 composite [J].

Hu, HM ;

Lavernia, EJ ;

Harrigan, WC ;

Kajuch, J ;

Nutt, SR .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2001, 297 (1-2) :94-104

[10] Precipitation phenomena in an ultrafine-grained Al alloy [J].

Hu, T. ;

Ma, K. ;

Topping, T. D. ;

Schoenung, J. M. ;

Lavernia, E. J. .

ACTA MATERIALIA, 2013, 61 (06) :2163-2178

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