of ENGINEERING-HUNEDOARA, ROMANIA 115 1. METAL MATRIX COMPOSITES AS TOOLS MATERIAL FOR THE DEEP DRAWING (original) (raw)
In order to improve the strength and high-temperature properties of sintered iron, metal matrix iron-Alumina (Al 2 O 3) composite material has been studied. In the present investigation, iron powder added by 0-8 Wgt % Al 2 O 3 powder where selected for the study. Powders where mixed, compacted and subsequently sintered at 1150 o C in laboratory tube furnace, under an endo gas atmosphere. Composite material properties were evaluated. The outcome results is that 4 vol % Al 2 O 3 is the optimal percentage of the Alumina to obtain superior properties of the metal matrix composite. The deep drawing die and punch have been designed by using metal matrix composite and experimentally tested. INTRODUCTION Sintered iron components are used for various commercial applications. However, inferior strength is a limitation of sintered straight iron powder metallurgy products in many applications. Therefore, it is very important to increase the strength of straight iron powder metallurgy products. ...
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