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Metallography of Powders and Porous Materials

Author: Thomas F. Murphy; Hoeganaes Corporation    |   Document Download   |   Product code: ZCP2013QM19

File size: 921 KB

Classified as: Metallography and Microstructures Powder Metallurgy

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In the examination of powder metallurgy (PM) materials and the overall PM process, the spatial characteristics of the metal powders, such as size and shape distributions, surface area, and the powder packing behavior, are determined by both their chemical composition and the processes used to manufacture them. All the physical and chemical traits of the particles help determine the eventual pore structure and particle interconnectivity in compacted and sintered parts and contribute to defining the eventual part properties. In addition to the properties of the individual powders, several methods are used to introduce alloying materials into the PM parts. Each alloying method has a profound effect on the distribution of the added elements, which results in the local chemical composition and microstructure after the thermal treatments. The microstructure and quality of the sintering then determines the part properties.
  • From: Quantitative Metallography: Proceedings of the Quantitative Metallography Conference(ASM International)
  • Publisher: ASM International
  • Published: March 01, 2013
  • Pages: 2