Relationship Between Fluidity and Microstructure of Aluminum Silicon Alloy PDF Download
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Author:
Publisher:
ISBN: 9789741748150
Category : Aluminum alloys
Languages : en
Pages :
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Book Description
Fluidity of casting alloys is defined as the ability of molten metal to fill mold cavity completely. In this research, fluidity of aluminum alloy grade AC2B, AC4CH, AC4B, AC9A, ADC12, and ADC14 was measured using reducing vacuum technique. Other parameters such as tube materials (copper, stainless steel, and quartz), tube diameters (from 2 mm to 6 mm), applied suction pressure (from 1.33 to 95 kPa), and degree of superheat (from 0 to 120 K) are investigated. Fluidity length of every alloy and condition varies linearly with the square root of suction pressure. Alloys with high silicon content exhibit higher fluidity. Effective suction pressure, defined as applied suction pressure minus gravity and surface energy terms, varies linearly with fluidity. Theoretical analysis indicates that the surface energy can be calculated from the experiments by fitting with curves which pass through the origin. Minimum applied suction pressure required to suck the liquid was calculated and is in the range from 40 to 200 Pa depending on the type of alloys. Microstructure of solidified specimen in the tubes was observed and agrees with the fine channel flow mechanism proposed earlier by Flemings.
Author:
Publisher:
ISBN: 9789741748150
Category : Aluminum alloys
Languages : en
Pages :
Get Book Here
Book Description
Fluidity of casting alloys is defined as the ability of molten metal to fill mold cavity completely. In this research, fluidity of aluminum alloy grade AC2B, AC4CH, AC4B, AC9A, ADC12, and ADC14 was measured using reducing vacuum technique. Other parameters such as tube materials (copper, stainless steel, and quartz), tube diameters (from 2 mm to 6 mm), applied suction pressure (from 1.33 to 95 kPa), and degree of superheat (from 0 to 120 K) are investigated. Fluidity length of every alloy and condition varies linearly with the square root of suction pressure. Alloys with high silicon content exhibit higher fluidity. Effective suction pressure, defined as applied suction pressure minus gravity and surface energy terms, varies linearly with fluidity. Theoretical analysis indicates that the surface energy can be calculated from the experiments by fitting with curves which pass through the origin. Minimum applied suction pressure required to suck the liquid was calculated and is in the range from 40 to 200 Pa depending on the type of alloys. Microstructure of solidified specimen in the tubes was observed and agrees with the fine channel flow mechanism proposed earlier by Flemings.
Author: John E. Gruzleski
Publisher:
ISBN:
Category : Aluminum alloys
Languages : en
Pages : 280
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Book Description
Author: Francisco C. Robles Hernandez
Publisher: Springer
ISBN: 3319583808
Category : Technology & Engineering
Languages : en
Pages : 253
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Book Description
This book details aluminum alloys with special focus on the aluminum silicon (Al‐Si) systems – that are the most abundant alloys second only to steel. The authors include a description of the manufacturing principles, thermodynamics, and other main characteristics of Al‐Si alloys. Principles of processing, testing, and in particular applications in the Automotive, Aeronautical and Aerospace fields are addressed.
Author: Alan Russell
Publisher: John Wiley & Sons
ISBN: 0471708534
Category : Technology & Engineering
Languages : en
Pages : 440
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Book Description
This junior/senior textbook presents fundamental concepts ofstructure property relations and a description of how theseconcpets apply to every metallic element except iron. Part One of the book describes general concepts of crystalstructure, microstructure and related factors on the mechanical,thermal, magnetic and electronic properties of nonferrous metals,intermetallic compounds and metal matrix composites. Part Two discusses all the nonferrous metallic elements from twoperspectives: First it explains how the concepts presented in PartOne define the properties of a particular metallic element and itsalloys. Second is a description of the major engineering uses ofeach metal. This section features sidebar pieces describingparticular physical property oddities, engineering applications andcase studies. An Instructor's Manual presenting detailed solutionsto all the problems in the book is available from the Wileyeditorial department. An Instructor's Manual presenting detailed solutions to all theproblems in the book is available from the Wiley editorialdepartment.
Author: S. Frederick
Publisher:
ISBN:
Category :
Languages : en
Pages : 36
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Book Description
The relation between microstructure and mechanical properties of cast 356 type aluminum alloys was studied to determine the cause of the variations in properties resulting from differences in solidification rate. It was found that variations in strength are a consequence of variations in ductility and that ductility is inversely proportional to the dendrite cell size. A mechanism is proposed to account for this correlation based on the fracture strain of the interdendritic silicon particles, and the differential strain across dendrite cell boundaries. (Author).
Author: Men G. Chu
Publisher: Wiley-TMS
ISBN:
Category : Science
Languages : en
Pages : 430
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Book Description
This volume addresses progress in the application of solidificationprinciples to the production of aluminum alloys. Topics includemicrostructure evolution, phase formation and solidification pathanalysis, grain refinement, micro/macro-segregation, mechanicalbehavior/properties in the mushy state, solidificationcracking/tearing, gas/shrinkage porosity formation, effect ofimpurities/trace elements, and the impact of cast structure on thesubsequent fabrication and properties of finished products. Paperson the experimental or theoretical simulation of solidificationaspects of casting processes including direct chill casting,continuous casting, shaped casting, semi-solid processing, andother advanced casting technologies are also included, as well asexamples showing the use of solidification principles to solveindustrial problems. From ahref="http://www.tms.org/Meetings/Annual-04/AnnMtg04Home.html"target="_blank"2004 TMS Annual Meeting/a to be held inCharlotte, North Carolina, March 14 - 18, 2004.
Author: Carlos Suarez
Publisher: Springer
ISBN: 3319481797
Category : Technology & Engineering
Languages : en
Pages : 1314
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Book Description
An update of the definitive annual reference source in the field of aluminum production and related light metals technologies, a great mix of materials science and practical, applied technology surrounding aluminum, bauxite, aluminum reduction, rolling, casting, and production.
Author: John Gilbert Kaufman
Publisher: ASM International
ISBN: 0871708035
Category : Technology & Engineering
Languages : en
Pages : 350
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Book Description
J. G. (Gil) Kaufman is currently president of his consulting company, Kaufman Associates.
Author: Subbarayan Sivasankaran
Publisher: BoD – Books on Demand
ISBN: 9535136976
Category : Technology & Engineering
Languages : en
Pages : 326
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Book Description
The major issue of energy saving and conservation of the environment in the world is being emphasized to us to concentrate on lightweight materials in which aluminium alloys are contributing more in applications in the twenty-first century. Aluminium and its related materials possess lighter weight, considerable strength, more corrosion resistance and ductility. Especially from the past one decade, the use of aluminium alloys is increasing in construction field, transportation industries, packaging purposes, automotive, defence, aircraft and electrical sectors. Around 85% is being used in the form of wrought products, which replace the use of cast iron. Further, the major features of aluminium alloy are recyclability and its abundant availability in the world. In general, aluminium and its related materials are being processed via casting, drawing, forging, rolling, extrusion, welding, powder metallurgy process, etc. To improve the physical and mechanical properties, scientists are doing more research and adding some second-phase particles in to it called composites in addition to heat treatment. Therefore, to explore more in this field, the present book has been aimed and focused to bridge all scientists who are working in this field. The main objective of the present book is to focus on aluminium, its alloys and its composites, which include, but are not limited to, the various processing routes and characterization techniques in both macro- and nano-levels.
Author: Michael V Glazoff
Publisher: Butterworth-Heinemann
ISBN: 0128121149
Category : Technology & Engineering
Languages : en
Pages : 564
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Book Description
Casting Aluminum Alloys, Second Edition, the follow up to the fall 2007 work on the structure, properties, thermal resistance, corrosion and fatigue of aluminum alloys in industrial manufacturing, discusses findings from the past decade, including sections on new casting alloys, novel casting technologies, and new methods of alloys design. The book also includes other hot topics, such as the implementation of computational technologies for the calculation of phase equilibria and thermodynamic properties of alloys, the development of software for calculation of diffusion processes in aluminum alloys, computational modeling of solidification microstructure and texture evolution of multi-component aluminum materials. In addition to changes in computational predictive abilities, there is a review of novel casting aluminum alloy compositions and properties, as well as descriptions of new casting technologies and updates to coverage on the mechanical properties of aluminum casting alloys. - Presents a discussion of thermodynamic calculations used for assessing non-equilibrium solidifications of casting aluminum alloys - Expands coverage of mathematical models for alloy mechanical properties, helping facilitate the selection of the best prospective candidate for new alloy development - Contains a new section that describes the self-consistent evaluation of phase equilibria and thermodynamic properties of aluminum alloys
