Factors influencing the machinability of sintered steels |
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Authors: | E Alizadeh |
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Affiliation: | 1. Faculty of Science, Department of Chemistry, Guilan University, P.O. Box: U, Rasht, Iran
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Abstract: | The machinability of powder metallurgy materials is considered to be poor. The main factors that deteriorate the machining of PM parts are introduced in this work. They are those which participate in different ranges and modes in the formation of a sintered body with required mechanical and other characteristics. The effect of base iron powders, alloying systems, and alloying elements, as well as the effect of processing routes, especially solid-state sintering, are mentioned. The characteristic heterogeneous microstructures are presented. The effect of porosity in terms of interrupted and deformation cutting theories is discussed and demonstrated. The main measures to improve machinability of PM materials are described. |
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