Title

Mechanical Properties of Sinter-Hardened steels

Abstract

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.

Department(s)

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)

0888-7462

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2004 Metal Powder Industries Federation, All rights reserved.

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