abstract

• The present study, with its practical implications, evaluates the relationship between microstructure and specific wear rate/friction coefficient in A356 alloy and A356/Al2O3 and A356/WC composites after casting and hot-extrusion. The characterization of crystalline phases was carried out using X-ray diffraction, and the microstructure was characterized by scanning electron microscopy. The comprehensive use of rotating (Pin-on-Disk) and linear reciprocating wear testers ensures a thorough understanding of the materials’ specific wear rate and friction coefficient behaviors. The results show a direct relationship between specific wear rate, friction coefficient, microstructure evolution, and hardness in the systems studied after casting and hot extrusion. In addition, the specific wear rate and friction coefficient decrease as the load increases during tests; however, the friction coefficient is more sensitive to hardness values at low loads; at as-cast conditions, this value decreases concerning the reference sample a 13%25 and 10%25 for the A356/Al2O3 and A356/WC composites, but at the extruded conditions, increases by 30%25 and 111%25, which is in a direct relationship to values of hardness obtained. Graphical Abstract: (Figure presented.)

authors

• Cruz Rivera José de Jesús
• Estrada-Guel I.
• Garay-Reyes C.G.
• Hernández Rivera José Luis
• Martínez-Sánchez R.
Mendoza-Duarte J.M.
Ruiz-Esparza-Rodríguez M.A.
... more

publication date

• 2024-01-01

published in

• Metals and Materials International  Journal

keywords

• A356 alloy; Composite; Hot-extrusion; Linear reciprocating; Pin-on-disk

Digital Object Identifier (DOI)

• 10.1007/s12540-024-01775-w

PubMed ID

start page

end page

volume

issue