Powder Metallurgy

Powder Metallurgy

Author: G. Dowson

Publisher: Springer

Published: 1990

Total Pages: 188

ISBN-13:

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Powder metallurgy, commonly designated by its initial letters asPM or PM, may be defined as the production of useful artefacts from metal powder without passing through the molten state. This introductory text examines the processes by which these powders are produced, and explores their behaviour in the subsequent consolidation stages.


Stainless Steels

Stainless Steels

Author: Joseph Ki Leuk Lai

Publisher: Bentham Science Publishers

Published: 2012

Total Pages: 173

ISBN-13: 1608053059

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"Stainless Steels: An Introduction and Their Recent Developments explains issues related to surface treatment, grain refinement, coloration, defect detection and powder metallurgy of stainless steels in detail with reference to new research findings. It al"


Manufacturing and Application of Stainless Steels

Manufacturing and Application of Stainless Steels

Author: Andrea Di Schino

Publisher: MDPI

Published: 2020-04-15

Total Pages: 260

ISBN-13: 3039286501

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Stainless steels represent a quite interesting material family, both from a scientific and commercial point of view, following to their excellent combination in terms of strength and ductility together with corrosion resistance. Thanks to such properties, stainless steels have been indispensable for the technological progress during the last century and their annual consumption increased faster than other materials. They find application in all these fields requiring good corrosion resistance together with ability to be worked into complex geometries. Despite to their diffusion as a consolidated materials, many research fields are active regarding the possibility to increase stainless steels mechanical properties and corrosion resistance by grain refinement or by alloying by interstitial elements. At the same time innovations are coming from the manufacturing process of such a family of materials, also including the possibility to manufacture them starting from metals powder for 3D printing. The Special Issue scope embraces interdisciplinary work covering physical metallurgy and processes, reporting about experimental and theoretical progress concerning microstructural evolution during processing, microstructure-properties relations, applications including automotive, energy and structural.


Powder Metallurgy of Iron and Steel

Powder Metallurgy of Iron and Steel

Author: Randall M. German

Publisher: Wiley-Interscience

Published: 1998-03-31

Total Pages: 528

ISBN-13:

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A comprehensive guide to current practices Powder metallurgy processes increasingly dominate the production of iron and steel components for a variety of machines, appliances, automobiles, and tools. These processes yield high-quality precision components, recycle scrap metals into useful powders, and consume less energy than traditional manufacturing methods. Despite the tremendous growth in this area, however, until now there has been no guide on practical issues in the field. Powder Metallurgy of Iron and Steel fills the need for a fundamental, nonmathematical treatment of this technology. Focusing on the most useful applications and the advantages of different production techniques, this systematic, self-contained volume provides serious help in tackling production problems on the factory floor. It covers the gamut of practical topics, from injection molding and compaction processes to sintering, full-density processes, heat treatments, finishing operations, and the mechanical properties of many products, including die-compacted steels. Written by a leading authority and designer of educational programs for the industry, Powder Metallurgy of Iron and Steel: Emphasizes current practices and real engineering materials in everyday manufacturing processes Keeps the mathematics simple, boxing the calculations outside the main body of text Includes research articles and trade information from a variety of sources Features numerous pictures and flow diagrams Includes an appendix with an extensive list of definitions This important tutorial for an expanding work force is accessible to scientists and engineers alike, as well as technicians, production supervisors, designers, consultants, and marketing personnel. It is also an excellent textbook for undergraduate and industrial courses.


Machinability of Powder Metallurgy Steels

Machinability of Powder Metallurgy Steels

Author: Andrej Šalak

Publisher: Cambridge Int Science Publishing

Published: 2005

Total Pages: 551

ISBN-13: 1898326827

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The machinability of powder metallurgy steels is poorer compared with wrought steels of appropriate composition and/or mechanical [properties. The reason for it is a larger number of material and processing variables affecting the final properties of a sintered material. Therefore the machining of powder metallurgy (PM) steels is a permanent subject of investigation and practice. The aim of the book is to make on the basis of present knowledge an overview of all interacting factors in machining process including those applied for the improvement of the machinability. There are the properties of basic plain iron and alloyed powders, various additions, compaction and sintering conditions. Effect of porosity, individual alloying elements and microstructure character is considered. The description of the basic machining processes with their characteristics and with the characteristics of the tool geometry belongs to the mentioned factors. For the improvement of machinability of PM steels different machining aids, as S, MnS, MoS2 and other are frequently used and their chemical and physical characteristics are given. The effect of various machining aids used on machinability of sintered plain iron, iron-carbon and of steels alloyed with Cu, Ni, Mo, Cr, Mn including powder forged steels with very different mechanical properties and very different microstructures is analysed and summarized. The high-speed steel, hardmetal and other tools with their geometry as the part of the cutting process are described in relation to the sintered powder materials. The recommendations for machining of various steels enclose the present knowledge about the machinability of powder metallurgy steels.