Use of small punch test to estimate the mechanical properties of powder metallurgy products employed in the automotive industry

Abstract

Powder metallurgy is a manufacturing technology widely used, especially in the automotive sector. In order to assure the quality of these components different conventional tests are employed directly on the final product, but in order to mechanically characterise the sintered material, standard mechanical tests can only be performed onto samples compacted and sintered in controlled conditions similar to the ones used in the real production. The final mechanical properties of these products after compacting and sintering are the input needed to define and analyze new geometries and products. The use of the small punch test (SPT) to mechanically characterise in a direct way the final sintered products was explained in this research work and the regressions to determine the tensile mechanical properties of the aforementioned products were also developed.

Keywords

Small Punch Test Mechanical properties Synchronizer hub,PM products Automotive industry Heat treatment

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