Effect of Tempering Temperature on Mechanical Properties and Microstructure of Sinter Hardened Materials
نویسندگان
چکیده
Sinter hardening enables the production of P/M parts with high strength and apparent hardness after sintering, eliminating the need for a post sintering heat treatment. The availability of sintering furnaces with improved cooling capacity combined with the development of low alloy steel powders specifically designed for sinter hardening make this process particularly attractive for parts that are difficult to quench because of their size and shape. Moreover, the powder mix formulation can be tailored to achieve a particular microstructure. However, because either a partially or fully martensitic structure is obtained after sintering, tempering is usually required to restore the mechanical properties.
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