Xem 1-18 trên 18 kết quả Cast alloys
  • The first section of the book includes the following topics: fusion-based additive manufacturing (AM) processes of titanium alloys and their numerical modelling, mechanism of ?-case formation mechanism during investment casting of titanium, genesis of gas-containing defects in cast titanium products. Second section includes topics on behavior of the (? + ?) titanium alloys under extreme pressure and temperature conditions, hot and super plasticity of titanium (? + ?) alloys and some machinability aspects of titanium alloys in drilling. ...

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  • Magnesium alloys have always been attractive to designers due to their low density, only two thirds that of aluminium. This has been a major factor in the widespread use of magnesium alloy castings and wrought products. The present book gives us an overview in some special areas of magnesium alloys concerning technological applications and eco-friendly requirements.

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  • I hope the reader will find inspiration from the new concepts described in this work. What is presented is a new approach to the metallurgy of castings. Not everything in the book can claim to be proved at this stage. Ultimately, science proves itself by underpinning good technology. Thus, not only must it be credible but, in addition, it must really work. Perhaps we may never be able to say for certain that it is really true, but in the meantime it is proposed as a piece of knowledge as reliable as can now be assembled (Ziman 2001)....

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  • Magnesium alloys have always been attractive to designers due to their low density, only two thirds that of aluminium. This has been a major factor in the widespread use of magnesium alloy castings and wrought products. The present book gives us an overview in some special areas of magnesium alloys concerning technological applications and eco-friendly requirements. Each chapter brings us a new facet relating to the application of magnesium alloy including, as an example, researches with rare earth metals as alloying components in magnesium implants for orthopaedic applications....

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  • Magnesium is the lightest of all the metals and the sixth most abundant on Earth. Magnesium is ductile and the most machinable of all the metals. Magnesium alloy developments have traditionally been driven by requirements for lightweight materials to operate under increasingly demanding conditions (magnesium alloy castings, wrought products, powder metallurgy components, office equipment, nuclear applications, flares, sacrificial anodes for the protection of other metals, flash photography and tools). The biggest potential market for magnesium alloys is in the automotive industry. ...

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  • Experimental alloys also are designated in accordance with the systems for wrought and cast alloys, but they are indicated by the prefix X. The prefix is dropped when the alloy is no longer experimental. During development and before they are designated as experimental, new alloys may be identified by serial numbers assigned by their originators.

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  • Many types of tool materials, ranging from high carbon steel to ceramics and diamonds, are used as cutting tools in today’s metalworking industry. It is important to be aware that differences do exist among tool materials, what these differences are, and the correct

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  • The last edition of the Handbook was published in 1994 and like all the earlier editions, it aimed to provide a practical reference book for all those involved in making castings in any of the commonly used alloys by any of the usual moulding methods. In order to keep the Handbook to a reasonable size, it was not possible to deal with all the common casting alloys in detail. Since 1994 the technology of casting has continued to develop and has become more specialised so that it has been decided to publish the 11th edition of the Handbook in three...

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  • Aluminum is the second most plentiful element on the earth and it became a competition in 19th century. The huge demand of aluminum is projected to get 70 million tons, over 30 millions being obtained from recycled scrap. The scope of aluminum ranges from household to space vehicles.

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  • • This chapter provides fundamental knowledge of different methods of productions / heat treatments of magnesium alloys and the use of various types of cast and wrought magnesium alloys. • The influences of alloy composition, microstructure and heat treatment on chemical and mechanical properties of magnesium alloys will be discussed in relation to its applications. Suranaree University of Technology Tapany Udomphol May-Aug 2007 Introduction • Found 2.8% in sea water and other forms, i.e., dolomite (CaMg(CO3)2), magnesite (MgCO3) and Carnallite...

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  • The cross reference designations shown are for alloy specifications according to widely recognized sources. References apply to the metal in the die cast condition and should not be confused with similar specifications for metal ingot. A “—” in a column indicates that the specific alloy is not registered by the given source.

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  • CONTENTS CONTENTS 16 C H A P T E R n A Textbook of Machine Design Engineering Materials and their Properties 1. Introduction. 2. Classification of Engineering Materials. 3. Selection of Materials for Engineering Purposes. 4. Physical Proper ties of Metals. 5. Mechanical Properties of Metals. 6. Ferrous Metals. 7. Cast Iron. 9. Alloy Cast Iron. 10. Effect of Impurities on Cast Iron. 11. Wrought Iron. 12. Steel. 15. Effect of Impurities on Steel. 16. Free Cutting Steels. 17. Alloy Steels. 19. Stainless Steel. 20. Heat Resisting Steels. 21.

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  • 134 Chapter 3: Elements of Style Points and picas are traditional typographic measures. There are 12 points to a pica and 6 picas to an inch. Therefore, a font size of 18 points is equivalent to 1.5 picas, or .25 inches. Ems and exes are also typographic measures. Like a percentage value, they specify sizes relative to the element’s computed size rather than an absolute number of units. When type was set using individual letters cast in lead alloy, font sets included spacer characters of different sizes. An em-quad was a square space just large enough to contain an uppercase M. Exes...

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  • The casting process represents the shortest route from the basic material, the alloyed melt, to the casting ready to be installed with optimized multiple functions. In contrast to this unique advantage exists the problem of the difficult control and diagnosis of the casting parameters which are responsible for the quality and the functionality of the casting. Only the melting parameters, chemical alloy composition and pouring temperature which can be set by inoculant or alloy wires and the heating capacity of the furnace before the casting are exceptions....

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  • CHAPTER 4 COPPER AND ITS ALLOYS Howard Mendenhall OHn Brass East Alton, Illinois Robert F. Schmidt Colonial Metals Columbia, Pennsylvania 4.1 COPPER 4.1.1 Composition of Commercial Copper 4.1.2 Hardening Copper 4.1.3 Corrosion 4.1.4 Fabrication 4.2 SAND-CAST COPPER-BASE ALLOYS 59 59 60 60 60 4.2.1 Introduction 4.2.2 Selection of Alloy 4.2.3 Fabrication 4.2.4 Mechanical and Physical Properties 4.2.5 Special Alloys 60 62 62 68 68 60 4.1 COPPER Howard Mendenhall 4.1.

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  • CHAPTER 7 MAGNESIUM AND ITS ALLOYS Robert S. Busk Hilton Head, South Carolina 7.1 7.2 INTRODUCTION USES 7.2.1 Nonstructural Applications 7.2.2 Structural Applications 109 109 109 109 7.4 FABRICATION 7.4.1 Machining 7.4.2 Joining 7.4.3 Forming CORRROSION AND FINISHING 7.5.1 Chemical-Conversion Coatings 7.5.2 Anodic Coatings 7.5.3 Pointing 7.5.4 Electroplating 110 110 110 112 113 113 113 113 113 7.5 7.3 ALLOYSANDPROPERTIES 7.3.1 Mechanical Properties of Castings 7.3.2 Mechanical Properties of Wrought Products 7.3.3 Physical Properties 110 110 110 110 7.

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  • Classification of Engineering Materials. 3. Selection of Materials for Engineering Purposes. 4. Physical Proper ties of Metals. 5. Mechanical Properties of Metals. 6. Ferrous Metals. 7. Cast Iron. 9. Alloy Cast Iron. 10. Effect of Impurities on Cast Iron. 11. Wrought Iron. 12. Steel. 15. Effect of Impurities on Steel. 16. Free Cutting Steels. 17. Alloy Steels. 19. Stainless Steel. 20. Heat Resisting Steels. 21. Indian Standard Designation of High Alloy Steels (Stainless Steel and Heat Resisting Steel). 22. High Speed Tool Steels. 23. Indian Standard Designation of High Speed Tool Steel.

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  • In recent decades scientists and engineers around the globe have been responding to the requirement of high performance materials through innovative material research and engineering. The ever increasing demand on quality and reliability has resulted in some dazzling technological achievements in the area of advanced materials and manufacturing.

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