Mechanical Properties of Sinter-Hardened steels
Sinter hardening of ferrous P/M materials results in parts with properties close to those of quenched and tempered steels with fewer secondary operations. Although improved sinter hardening grades of powders are becoming increasingly available, there is still a limited understanding of the relationship between properties and processing parameters. A study to assess the effect of a variation, in processing parameters on mechanical properties was performed using "design of experiments" methods. The effect of variations in graphite content and cooling rate on the mechanical properties of Ancorsteel 150HP with 2 w/o copper was investigated. Yield and tensile strength, sintered hardness, tempered hardness, and elongation were measured and the data fitted to a model for each property. The model was used to find possible interaction effects between the processing variables, how they influence mechanical properties and to optimize mechanical properties.
S. N. Thakur et al., "Mechanical Properties of Sinter-Hardened steels," International Journal of Powder Metallurgy (Princeton, New Jersey), vol. 40, no. 3, pp. 45 - 54, Metal Powder Industries Federation, May 2004.
Materials Science and Engineering
Keywords and Phrases
Alloying; Cooling; Graphite; Hardening; Hardness; Mathematical Models; Optimization; Powder Metallurgy; Productivity; Sintering; Tensile Strength; Yield Stress; Convective Cooling; Cooling Rate; Green Density; Sinter Hardening; Steel
International Standard Serial Number (ISSN)
Article - Journal
© 2004 Metal Powder Industries Federation, All rights reserved.
01 May 2004