Impact of processing parameters on the interfacial bonding and properties of recycled LCS/WC–Co bilayers developed through powder metallurgy
Mostafa M. Abdelhaleem, A. A. El-Daly, Omayma A. Elkady, Mohamed Hassan, Mahmoud Atta
TL;DR
This paper explores how processing parameters affect the bonding and properties of a bilayer composite made from recycled steel and WC-Co using powder metallurgy.
Contribution
The study introduces a sustainable method to produce a tough-hard bilayer composite with optimized mechanical performance using recycled materials.
Findings
Optimal parameters (1300°C, 313 MPa, 25 μm) produced defect-free interfaces and strong bonding.
Interfacial reactions formed intermetallics and carbides, enhancing mechanical strength.
Compressive and tensile bonding strengths reached 209 MPa and 44 MPa, respectively.
Abstract
This study aims to develop a tough-hard (LCS/WC-Co) bilayer composite using recycled low-carbon steel (LCS) with WC–Co through conventional powder metallurgy (PM), offering a cost-effective and sustainable route to enhance mechanical performance. Processing parameters like sintering temperature, compaction pressure, and particle size, were optimized to control microstructural development and mechanical behavior. The microstructure results show that the defect-free interfaces, dense layer and strong interfacial bonding strength are achieved at the optimal parameters of 1300 °C, 313 MPa, and 25 μm particle size. Lower sintering temperatures (< 1280 °C) produced porosity and weak adhesion, whereas sintering above 1320 °C led to interfacial cracking. At the interface, mutual diffusion occurred with Fe diffusion into WC–Co and Co migrating into LCS. Concurrently, WC decomposition facilitated…
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Taxonomy
TopicsAdvanced materials and composites · Electrodeposition and Electroless Coatings · Metal Alloys Wear and Properties