Explosive Compaction of Powdered Metals, Phase I.

Explosive Compaction of Powdered Metals, Phase I. PDF Author: Thomas E. Alves
Publisher:
ISBN:
Category :
Languages : en
Pages : 25

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Book Description
This is the final project report on a study to determine the feasibility of explosively compacting powdered metals to form missile and other ordnance parts. At the outset of this project, it was believed that with the ability to generate extremely high pressure with explosives, one could achieve close to 100% theoretical density by using explosives to compact metal powders. During the course of the project, densities as high as 97.9% of theoretical were attained with powdered steel compacts. However, considerable precompaction preparation was necessary to achieve this. The most difficult problem encountered was driving off oxides in the steel powder. This was never satisfactorily accomplished even with preheating the powder samples in a vacuum prior to compaction. Sintering in a reducing atmosphere was also tried without success. It became more evident as the project progressed that the cost of achieving acceptable physical properties would be very high and make explosively compacting parts infeasible.

Explosive Compaction of Powdered Metals, Phase I.

Explosive Compaction of Powdered Metals, Phase I. PDF Author: Thomas E. Alves
Publisher:
ISBN:
Category :
Languages : en
Pages : 25

Get Book Here

Book Description
This is the final project report on a study to determine the feasibility of explosively compacting powdered metals to form missile and other ordnance parts. At the outset of this project, it was believed that with the ability to generate extremely high pressure with explosives, one could achieve close to 100% theoretical density by using explosives to compact metal powders. During the course of the project, densities as high as 97.9% of theoretical were attained with powdered steel compacts. However, considerable precompaction preparation was necessary to achieve this. The most difficult problem encountered was driving off oxides in the steel powder. This was never satisfactorily accomplished even with preheating the powder samples in a vacuum prior to compaction. Sintering in a reducing atmosphere was also tried without success. It became more evident as the project progressed that the cost of achieving acceptable physical properties would be very high and make explosively compacting parts infeasible.

Explosive Compaction of Powders and Composites

Explosive Compaction of Powders and Composites PDF Author: R Prummer
Publisher: CRC Press
ISBN: 1482294338
Category : Science
Languages : en
Pages : 206

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Book Description
This monograph discusses in detail the compacting conditions and the resultant structure and properties of metals, composites and ceramics. It covers the basic aspects of science and technology of explosive compaction. Comprise chapters on Shock Waves in Matter, Technology of Explosive Compaction, Explosive Compaction of Metallic Powders, Explosive

Science of Sintering

Science of Sintering PDF Author: H. Palmour III
Publisher: Springer Science & Business Media
ISBN: 1489909338
Category : Technology & Engineering
Languages : en
Pages : 626

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Book Description
This volume, SCIENCE OF SINTERING: NEW DIRECTIONS FOR MATERIALS PROCESSING AND MICROSTRUCTURAL CONTROL, contains the edited Proceedings of the Seventh World Round Table Conference on Sintering, held in Herceg-Novi, Yugoslavia, Aug. 28 - Sept. 1, 1989. It was organized by the International Institute for the Science of Sintering (IISS), headquartered in Belgrade, Yugoslavia. Every fourth year since 1969, the Institute has organized such a Round Table Conference on Sintering; each has taken place at some selected location within Yugoslavia. A separate series of IISS Topical Sintering Symposia (Summer Schools) have also been held at four year intervals, but they have been offset by about two years, so they occur between the main Conferences. As a rule, the Topical Sintering Symposia have been devoted to more specific topics and they also take place in different countries. The aim of these Conferences and their related "Summer Schools" has been to bring together scientists from all over the world who work in various fields of science and technology concerned with sintering and sintered materials. A total of seven IISS Conferences have been held over the period 1969-1989, and they have been supplemented by the four Topical Sintering Symposia held in Yugoslavia, Poland, India and Japan (in 1975, 1979, 1983 and 1987, respectively). This most recent five day Conference addressed the fundamental scientific background as well as the technological state-of-the-art pertinent to science of sintering and high technology sintered materials.

An Investigation of the Mechanism and Controlling Parameters in Direct Explosive Compaction of Powder Metals

An Investigation of the Mechanism and Controlling Parameters in Direct Explosive Compaction of Powder Metals PDF Author: Charles Richard Alan Lennon
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Explosive Welding, Forming and Compaction

Explosive Welding, Forming and Compaction PDF Author: T.Z. Blazynski
Publisher: Springer Science & Business Media
ISBN: 9401197512
Category : Science
Languages : en
Pages : 410

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Book Description
The last two decades have seen a steady and impressive development, and eventual industrial acceptance, of the high energy-rate manufact turing techniques based on the utilisation of energy available in an explo sive charge. Not only has it become economically viable to fabricate complex shapes and integrally bonded composites-which otherwise might not have been obtainable easily, if at all-but also a source of reasonably cheap energy and uniquely simple techniques, that often dispense with heavy equipment, have been made available to the engineer and applied scientist. The consolidation of theoretical knowledge and practical experience which we have witnessed in this area of activity in the last few years, combined with the growing industrial interest in the explosive forming, welding and compacting processes, makes it possible and also opportune to present, at this stage, an in-depth review of the state of the art. This book is a compendium of monographic contributions, each one of which represents a particular theoretical or industrial facet of the explosive operations. The contributions come from a number of practising engineers and scientists who seek to establish the present state of knowledge in the areas of the formation and propagation of shock and stress waves in metals, their metallurgical effects, and the methods of experimental assessment of these phenomena.

New Methods for the Consolidation of Metal Powders

New Methods for the Consolidation of Metal Powders PDF Author: Henry H. Hausner
Publisher: Springer
ISBN: 1489964231
Category : Technology & Engineering
Languages : en
Pages : 261

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Book Description


Explosibility of Metal Powders

Explosibility of Metal Powders PDF Author: Murray Jacobson
Publisher:
ISBN:
Category : Dust explosions
Languages : en
Pages : 34

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Book Description


Materials Processing In Magnetic Fields - Proceedings Of The International Workshop On Materials Analysis And Processing In Magnetic Fields

Materials Processing In Magnetic Fields - Proceedings Of The International Workshop On Materials Analysis And Processing In Magnetic Fields PDF Author: Hans J Schneider-muntau
Publisher: World Scientific
ISBN: 9814480096
Category : Science
Languages : en
Pages : 387

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Book Description
Processing in magnetic fields is a rapidly expanding research area with a wide range of promising applications in materials science, development and design. Numerous research centers dedicated to materials research and processing in magnetic fields have been created around the world. This volume brings together contributions from these centers to review the most recent activities in this field.The papers in this book cover a broad spectrum of research of the effects on magnetic fields in materials processing. The cutting-edge research topics include magnetic levitation of diamagnetic matter and its applications; anisotropy, used for aligning fibers, polymers, and carbon nanotubes; texturing of materials during a phase transition, in both liquid-to-solid and solid-to-solid state transitions; grain boundary migration and mobility changes, giving us a perspective for texture development in metals; and the damping effect of magnetic fields on conductive liquids, which has been exploited for improved crystal growth quality. Of growing interest are the effects of magnetic fields in biology, and their beneficial applications for medical treatments.

High Energy Rate Compaction of Rapidly Solidified Metal Powders

High Energy Rate Compaction of Rapidly Solidified Metal Powders PDF Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description
It is concluded that explosive compaction of metal powders will not be afeasible process, unless a number of problems are solved. These problemsinclude a lack of bonding between the particles, the tendency for crackingand the presence of high levels of residual stresses in the sample.

Reactor Core Materials

Reactor Core Materials PDF Author:
Publisher:
ISBN:
Category : Nuclear reactors
Languages : en
Pages : 844

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Book Description