Al-B4C Nanocomposite by MR.Govahi

Introduction to MMCs

Introduction to Aluminum MMCs (AMMCs)

Ceramic Reinforcements in AMMCs

Types and Morphology of Reinforcements

Aluminum Nano-composites

Producing Methods

Comparison in Different Procedures.

Reviews of some Experiments And Researches

COMPOSITE MATERIAL is a macroscopic combination of two or more distinct materials, having a recognizable interface between them.

Matrix

Reinforcements

Metal Matrix Composites (MMCs)

Ceramic Matrix Composites (CMCs)

Polymer Matrix Composites (PMCs)

Matrix : Al, Ti, Cu, Ni, Fe ect…

Reinforcements: Carbides, Oxides, Nitrides, Borides, Mixture, C, B.

Source: http://sp3cuttingtools.com/applications/silicon-aluminum.html

Major weight savings due to higher strength-to-weight ratio

Great dimensional stability

Higher elevated temperature stability, i.e., creep resistance

Significantly improved cyclic fatigue characteristics

Continuous Fibers

Discontinuous Fibers

Whiskers

Particles

Sheet, Laminates, Braids..

Source: N,Chawla- K.Chawla, Metal Matrix Composites, Springer,2006.

Aluminum has brilliant Properties:

Low Density (2.7g/cm3)

High Strength / Weight Ratio

High Corrosion Resistance

Workability

Low Melt Point

Availability

ect

Source: Brian Cantor,Fionn Dunne,Ian Stone-Metal and Ceramic Matrix Composites- IOP Publishing Ltd 2004

High Strength/ Weight Ratio High Temperature Properties Better Wear Resistance Aerospace Structural Wear Transportations Automotive Military Ect..

Reinforcements:

Dimensions: 10nm- 100nm

Morphology: Particles

Materials: Ceramics (Al2O3, SiC, B4C,TiB2, ZrO2 ..)

Source: S. Alalhessabi-S.A. Manafi- E. Borhani, The Structural and Mechanical Properties of Al-2.5%wt. B4C Metal Matrix Nano-composite Fabricated by the Mechanical Alloying, Mechanics of Advanced Composite Structures 2 (2015) 39-44

Good Distribution of Reinforcements

Isotropic Properties

Better Mechanical Properties

Source:

زينب نصيري، مقايسه ريزساختار و عبدالهي عليرضا -علي عليزاده

Al-B4C نانوكامپوزيتو خواص مكانيكي

گردابي، متالورژيگري ريختهتوليد شده به روشهاي

فصلنامه علمي پژوهشي فرآيندهاي نوين مكانيكي،پودر و آلياژسازي .1393، 1مواد، شماره در مهندسي

High strength High Melting Point (2450 C) Low density (2.52 g/cm3) Extremely high hardness (3700 HV) (the third

hardest material after diamond and boron nitride)

High Modulus (445 Gpa) Good chemical & thermal stability Neutron absorption (Nuclear Industries) Matrixes (Al 1XXX, 2024, 5083,6061, 7075,

ect..)

Powder Metallurgy (PM)

Mechanical Alloying (MA)

Liquid Phase Process (Stir Casting)

Semi-Solid Phase Process

Friction Stir Welding (FSW)

Solid state process

Source:

زينب و عبدالهي عليرضا -علي عليزاده

نصيري، مقايسه ريزساختار و خواص

Al-B4C نانوكامپوزيتمكانيكي

گري ريختهتوليد شده به روشهاي

گردابي، متالورژي

فصلنامه مكانيكي،پودر و آلياژسازي

علمي پژوهشي فرآيندهاي نوين در .1393، 1مواد، شماره مهندسي

Source:

Al-B4C نانوكامپوزيتزينب نصيري، مقايسه ريزساختار و خواص مكانيكي و عبدالهي عليرضا -علي عليزاده

گردابي، متالورژيگري ريختهتوليد شده به روشهاي .1393، 1مواد، شماره فصلنامه علمي پژوهشي فرآيندهاي نوين در مهندسي مكانيكي،پودر و آلياژسازي

Increasing Milling Time

Decreasing Size

Nano Size

Source: S. Alalhessabi-S.A. Manafi- E. Borhani, The Structural and Mechanical Properties of Al-2.5%wt. B4C Metal Matrix Nano-composite Fabricated by the Mechanical Alloying, Mechanics of Advanced Composite Structures 2 (2015) 39-44

Source: S. Alalhessabi-S.A. Manafi- E. Borhani, The Structural and Mechanical Properties of Al-2.5%wt. B4C Metal Matrix Nano-composite Fabricated by the Mechanical Alloying, Mechanics of Advanced Composite Structures 2 (2015) 39-44

Source: S. Alalhessabi-S.A. Manafi- E. Borhani, The Structural and Mechanical Properties of Al-2.5%wt. B4C Metal Matrix Nano-composite Fabricated by the Mechanical Alloying, Mechanics of Advanced Composite Structures 2 (2015) 39-44

Source: M. Khakbiz- F. Akhlaghi,Synthesis and structural characterization of Al–B4C nano-composite powders by mechanical alloying,Elsevier, Journal of Alloys and Compounds 479 (2009) 334–341

Source:Yusof Abdullah, et al- Al/B4C Composites with 5 And 10 wt% Reinforcement Content Prepared By Powder Metallurgy - JOURNAL of NUCLEAR And Related TECHNOLOGIES, Volume 9, No. 1, June, 2012.

Source:Yusof Abdullah, et al- Al/B4C Composites with 5 And 10 wt% Reinforcement Content Prepared By Powder Metallurgy - JOURNAL of NUCLEAR And Related TECHNOLOGIES, Volume 9, No. 1, June, 2012.

Source: M. Firouzi, M. R. Nami , A. R. Zandi-Fabrication and evaluation of mechanical properties of Al-5vol. %B4C, Al-5vol. %SIC, Al- 5vol. %SIO2 nanocomposite powders produced by mechanical milling-Proceedings of the 4th International Conference on Nanostructures (ICNS4), 1519-1521

Source: M. Firouzi, M. R. Nami , A. R. Zandi-Fabrication and evaluation of mechanical properties of Al-5vol. %B4C, Al-5vol. %SIC, Al- 5vol. %SIO2 nanocomposite powders produced by mechanical milling-Proceedings of the 4th International Conference on Nanostructures (ICNS4), 1519-1521

Al-B4C is a Useful Nanocomposite in Aerospace, Transportation, Automotive, Military, Wear, Structural ect..

Mechanical Alloying is the Best Process for Producing Al-B4C Nano-composites.

Good Distribution of Reinforcement Particle is the Most Advantage of MA Process

Increasing Milling Time would Decrease Grain Size of Composite and Reaching Nano-Composite with Very Better Performance

Al-B4C Nano-Composite is Harder and have More Strength than Al-SiC, Al-SiO2.

1. N,Chawla- K.Chawla, Metal Matrix Composites, Springer,2006.

2. Brian Cantor,Fionn Dunne,Ian Stone-Metal and Ceramic Matrix Composites- IOP Publishing Ltd 2004.

3. S. Alalhessabi-S.A. Manafi- E. Borhani, The Structural and Mechanical Properties of Al-2.5%wt. B4C Metal Matrix Nano-composite Fabricated by the Mechanical Alloying, Mechanics of Advanced Composite Structures 2 (2015) 39-44.

شده به روشهاي ريختهتوليد Al-B4C و زينب نصيري، مقايسه ريزساختار و خواص مكانيكي نانوكامپوزيت عليرضا عبدالهي -علي عليزاده 4.

.1393، 1و آلياژسازي مكانيكي، فصلنامه علمي پژوهشي فرآيندهاي نوين در مهندسي مواد، شماره پودر متالورژيگري گردابي،

5. Morteza Alizadeh, et al, Properties of high specific strength Al–4 wt.% Al2O3/B4C nano-composite produced by accumulative roll bonding process, Elsevier, Materials and Design 50 (2013) 427–432.

6. M. Khakbiz- F. Akhlaghi,Synthesis and structural characterization of Al–B4C nano-composite powders by mechanical alloying,Elsevier, Journal of Alloys and Compounds 479 (2009) 334–341.

7. Yusof Abdullah, et al-Al/B4C Composites with 5 And 10 wt% Reinforcement Content Prepared By Powder Metallurgy -JOURNAL of NUCLEAR And Related TECHNOLOGIES, Volume 9, No. 1, June, 2012.

8. M. Firouzi, M. R. Nami , A. R. Zandi-Fabrication and evaluation of mechanical properties of Al-5vol. %B4C, Al-5vol. %SIC,Al- 5vol. %SIO2 nanocomposite powders produced by mechanical milling-Proceedings of the 4th International Conference on Nanostructures (ICNS4), 1519-1521.

.1393-جهاد دانشگاهی اصفهان -ترجمه محمود مرآتيان، ميثم جاللی -کامپوزيتهای زمينه فلزی-چاوال؛ک چاوال.ن9.

.1389-انتشارات دانشگاه تهران -ترجمه بابک کفاشی، پورسنگ،وزيری-علوم و فناوذب نانوکامپوزيت -آجايان؛ شادلر؛ براون10.

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