1462X_toc - Contents 1 Introduction . 1 1.1 BACKGROUND . 1...

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xi Contents 1 Introduction. ............................................................................. 1 1.1 BACKGROUND . ................................................................................ 1 1.2 HISTORY OF STORY OF MECHANICAL ALLOYING . ................... 2 1.3 MILLING . ........................................................................................... 5 1.3.1 Factors Affecting the Mechanical Alloying . .......................... 6 1.3.1.1 Types of Mills . .......................................................... 7 1.3.1.2 Effect of Ball-to-Powder Weight Ratio . ............... 14 1.3.1.3 Effect of Milling Atmosphere . .............................. 16 1.4 MECHANISM OF MECHANICAL ALLOYING . ........................... 16 1.4.1 Ball-Powder-Ball Collision . ................................................ 16 1.5 NECESSITY OF MECHANICAL ALLOYING. ............................... 19 REFERENCES . ......................................................................................... 19 2 Fabrication of ODS Alloys . ................................................... 22 2.1 INTRODUCTION AND BACKGROUND. ...................................... 22 2.2 APPLICATIONS AND EXAMPLES. ............................................... 24 2.2.1 ODS Ni-Base Superalloys and Fe-Base High-Temperature Alloys . .................................................... 24 2.2.1.1 INCONEL MA 754 . ............................................... 25 2.2.1.2 INCONEL MA 6000 . ............................................. 25 2.2.1.3 INCOLOY MA 956 . ............................................... 27 REFERENCES . ......................................................................................... 33
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xii Mechanical Alloying 3 Fabrication of Nanophase Materials . ................................... 34 3.1 INTRODUCTION . ............................................................................ 34 3.2 INFLUENCE OF NANOCRYSTALLINITY ON MECHANICAL PROPERTIES: STRENGTHENING BY GRAIN SIZE REDUCTION . .................................................................................. 35 3.3 FORMATION OF NANOCRYSTALLINE MATERIALS BY BALL MILLING TECHNIQUE . ...................................................... 36 3.3.1 Mechanism(s) . ....................................................... 37 3.3.2 Selected Examples . ................................................ 38 3.4 CONSOLIDATION OF THE NANOCRYSTALLINE MILLED POWDERS . ..................................................................................... 41 REFERENCES . ......................................................................................... 43 4 Fabrication of Nanocomposite Materials . ............................ 45 4.1 INTRODUCTION AND BACKGROUND. ...................................... 45 4.2 FABRICATION OF SiC p /Al COMPOSITES BY MECHANICAL SOLID STATE MIXING . .................................................................. 47 4.3 PROPERTIES OF MECHANICALLY SOLID-STATE FABRICATED
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This note was uploaded on 11/04/2010 for the course ACC 411 taught by Professor Kim during the Spring '08 term at Aberystwyth University.

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1462X_toc - Contents 1 Introduction . 1 1.1 BACKGROUND . 1...

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