4 edition of Densification of metal powders during sintering found in the catalog.
|Statement||[by] V. A. Ivensen. Translated from Russian by Eric Renner.|
|Series||Studies in Soviet science|
|LC Classifications||TN695 .I913|
|The Physical Object|
|Pagination||x, 242 p.|
|Number of Pages||242|
|LC Control Number||72094822|
Metal Laser Sintering (LS) is a powder bed fusion process that can be used to produce manufactured parts of complex shapes directly from metallic powders. One of the major problems of such powder bed fusion processes is that during the continuous movement of the laser beam, temperature distribution becomes inhomogeneous and instable in the powder. It leads to greater residual stresses in the Cited by: The powders are elemental, pre-alloyed, or partially alloyed. Elemental powders, such as iron and copper, are easy to compress to relatively high densities, produce pressed compacts with adequate strength for handling during sintering, but do not produce very high strength sintered : Hoeganaes.
Sintering as a technology has been followed from ancient times. However, as science it emerged in s with the seminal work of Frenkel, Huettig, Kuczynski, Lenel, Kingery and Hausner. The present paper covers the historical aspects of sintering fundamentals, right from solid state sintering to liquid phase sintering, activated sintering, electronic theory of sintering, sintering with Cited by: 2. Densification of PM Ti-6Al-4V and typical microstructure and mechanical property. Sintering mechanism: Sintering/densification of conventional PM Ti-6Al-4V is mostly through solid state sintering. Sintering temperatures are normally selected in the β phase region , at a temperature (e.g. at ºC) well below the liquidus temperature (~ ºC for Ti-6Al-4V, Table 1) [14,15].Cited by:
Figure 1. Material transfer path during sintering. It is regarded as a rapid sintering method in which the heating power is not only distributed over the volume of the powder compact homogeneously in a macroscopic scale, but moreover the heating power is dissipated exactly at the locations in the microscopic scale, where energy is required for the sintering process, namely at the contact Cited by: Microwave Sintering of Pure Metal Powders – A Review during the densification mechanisms of microwave sintering in case of ceramic powders [Rahaman, ]. It is reported that copper steel (MPIF FC composition) and nickel steel powder (FN) sintered by microwave technique.
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Sintering of powder metal compacts is one of the basic oper ations in powder metallurgy. The useful properties of a machine part are obtained after considerable densification of the sintered material. Although the mechanical properties of the part depend on other structural factors besides porosity, porosity is the main factor.
Sintering of powder metal compacts is one of the basic oper ations in powder metallurgy. The useful properties of a machine part are obtained after considerable densification of the sintered material. Author: V. Ivensen. Additional Physical Format: Online version: Ivensen, V.A.
(Vladislav Aleksandrovich). Densification of metal powders during sintering. New York, Consultants Bureau, It was found that when melting/solidification approach is the mechanism of sintering, the densification of metals powders (D) can be expressed as an exponential Cited by: A considerable densification usually occurs in the solid state during heating to the liquid phase sintering temperature; the initial microstructure of liquid phase sintering is strongly affected by the solid state sintering stage.
The book is unique in providing a complete grounding in the principles of sintering and equal coverage of the three key sintering processes: densification, grain growth and microstructure. Students and professional engineers alike will be attracted by the emphasis on developing.
Densification during sintering of metal powders, if its development is not disturbed by other processes or external influences, obeys the simple laws described above. These laws also extend to powders of carbides, nitrides, and borides of refractory : V.
Ivensen. The sintering densification behaviors of Ti-1Al-8V-5Fe alloys by saturated titanium hydride (TiH2) and unsaturated titanium hydride (TiH) powders are investigated.
This volume contains the edited Proceedings of the Sixth World Round Table Conference on Sintering, held in Herceg-Novi, Yugoslavia on SeptemberIt was organized by the International Institute for the Science of Sintering (IISS), headquartered in Beograd.
Every fourth year sincethe Institute has organized such a Round Table Conference on Sintering, each has taken. This chapter reviews a series of sintering experiments conducted on Ultra‐High temperature ceramics (UHTCs) based on both transition metal borides (MB 2) and carbides (MC).Emphasis is placed on sintering aids used, densification behavior recorded during hot pressing, and identification of the basic densification by: The term sintering basically defines a process of bonding, densification and/or recrystallization of powder compacts, i.e.
a treatment in which a green-body is converted to a stronger monolith [1 Author: Randall M. German. Sintering can be achieved either in solid or liquid state. In those processes, densification is the most important parameter to control in order to obtain the desired properties.
The densification of a metal-ceramic powder mixture during hot Cited by: 2. Sintering is a heat treatment applied to a powder compact in order to impart strength and integrity. The temperature used for sintering is below the melting point of the major constituent of the Powder Metallurgy material.
After compaction, neighbouring powder particles are held together by cold welds, which give the compact sufficient “green. Densification of metal powders during sintering [V. Ivensen] on *FREE* shipping on qualifying : V.
Ivensen. Sintering is a heat treatment commonly used to increase the strength and structural integrity of a given material.
Powder metallurgy processes use sintering to convert metal powders and other unique materials into end-use parts.
Sintering typically takes place in a single, elongated furnace with different temperature zones. Sintering is the process of forming materials and components from a powder under the action of thermal energy. It is a key materials science subject: most ceramic materials and many specialist metal powder products for use in key industries such as electronics, automotive and aerospace are formed this way.
Pressing in rigid die and free sintering of a powder cylinder E. Olevsky, G. Timmermans, M. Shtern, L. Froyen, and L. Delaey, The permeable element method for modeling of deformation processes in porous and powder materials: Theoretical basis and checking by experiments, Powd.
Technol. Densification of Metal Powders During Sintering. [V A Ivensen] -- Sintering of powder metal compacts is one of the basic oper ations in powder metallurgy. The useful properties of a machine part are obtained after considerable densification of the sintered. Metal processing technology in which parts are produced from metallic powders Usual PM production sequence: 1.
Pressing - powders are compressed into desired shape to produce *green compact ~ Accomplished in press using punch-and-die 2. Sintering - green compacts are heated to bond the particles into a hard, rigid mass.
Spark plasma sintering (SPS), one of the novel powder metallurgy techniques offers the advantage of manufacturing nanostructured materials. The present paper reports on the basic investigation of densification behaviour of nanostructured γ–TiAl alloy consolidated by spark plasma : Sarangapani Kennedy, S.
Kumaran, T. Srinivasa Rao. Powder metallurgy (PM) is a term covering a wide range of ways in which materials or components are made from metal processes can avoid, or greatly reduce, the need to use metal removal processes, thereby drastically reducing yield losses in manufacture and often resulting in lower costs.
Powder metallurgy is also used to make unique materials impossible to get from melting or.Sintering is enhanced if a liquid phase takes part in the process. This occurs when the powder contains a component, having the melting point lower, than the melting point of the base metal (for example in copper-lead-tin bearing alloys).
Continuous belt furnaces are commonly used for the sintering process.S. Diouf and A. Molinari, “Densification mechanisms in spark plasma sintering: effect of particle size and pressure,” Powder Technology, vol.pp.
–, View at: Google Scholar S. Diouf, C. Menapace, and A. Molinari, “Study of effect of particle size on densification of copper during spark plasma sintering,” Powder Cited by: