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  4. How sintering time and temperature influence fatigue
 
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1994
Journal Article
Title

How sintering time and temperature influence fatigue

Other Title
Einfluß der Sinterzeit und Temperatur auf das Schwingfestigkeitsverhalten
Abstract
Mechanical properties of the diffusion alloyed PM' steel Fe-4.0 percent Ni-1.5 percent Cu-0.5 percent Mo+0.6 percent (Ultrapac LE + 0.6 percent C) at the density of 7.1 g/cbcm sintered at 1120 degree Celsius/30 min, 1120 degree Celsius/120 min, 1250 degree Celsius/30 min and 1250 degree Celsius/120 min, were investigated. Fatigue and fracture mechanical properties are significantly improved by the increase of sintering time and temperature due to a better microstructural homogeneity and improved pore's shape. However, as a sintering time of 120 minutes is too long for an industrial mass production the high- temperature sintering at 1250 degree Celsius for a minimum of 30 minutes can be recommended for the manufacture of highly stressed PM' parts.
Author(s)
Lindner, K.-H.
Sonsino, C.M.  
Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF  
Journal
Metal Powder Report  
Language
English
Fraunhofer-Institut für Betriebsfestigkeit und Systemzuverlässigkeit LBF  
Keyword(s)
  • Bruchmechanik

  • Festigkeitsverhalten

  • fracture mechanic

  • Gefüge

  • microstructure

  • powder metallurgy

  • Pulvermetallurgie

  • sintered steel

  • Sinterstahl

  • strength behaviour

  • temperature effect

  • Temperatureinfluß

  • time effect

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