Investigation of Sinterability of WC-Co Component Comprising of AISI 4340 Steel Inserts

Year 2023, , 1722 - 1731, 01.12.2023

Mehmet Subaşı , Harun Koçak , Asghar Safarian , Çetin Karataş

https://doi.org/10.35378/gujs.1070501

Abstract

In this study, sinterability of WC-9% Co component with AISI 4340 steel insert was investigated using Inserted Powder Injection Molding (IPIM) method. Sintering experiments were performed at temperatures of 1200 °C to 1350 °C with dwell times of 120, 240, 360 min. Defects such as gaps, cracks and macro-porosities were observed in specimens, sintered at temperatures of 1200 °C and 1250 °C for all dwell times. It was proved that sintering temperature of 1350 °C was as high as it caused insert to get deformed and melted. As a result, the optimum sintering temperature and dwell time were determined to be 1300 °C and 240 min, respectively, at which the highest hardness, compression strength, and sintered density were obtained without any defects such as cracks or gaps.

Keywords

WC-Co feedstock, AISI 4340 steel, Sintering, Inserted powder injection molding

Supporting Institution

The Scientific and Technological Research Council of Turkey (TUBİTAK)

Project Number

115M437

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