ARIZA GALVÁN , Enrique

La técnica de fabricación aditiva conocida como Plasma Transferred Arc (PTA), permite el procesado de piezas con geometrías muy complejas mediante la deposición capa a capa del material. En esta técnica, la fuente de energía encargada de la fusión de cada capa es un plasma. En esta investigación, una pieza de la aleación de base níquel conocida...

Los materiales compuestos de base titanio son materiales muy valorados por sus excelentes propiedades específicas. El interés por desarrollar estos materiales mediante técnicas aditivas, en particular con el método conocido como Plasma Transferred Arc, es el punto de partida de esta investigación. Por ello, se estudiaron especímenes con...

La fabricación aditiva ha despertado gran interés en la industria metalúrgica debido a que la producción de piezas cercanas a su geometría final reduce los costes de producción comparado con los métodos de fabricación tradicional, ahorrando en energía, tiempo de producción y materia prima. El ahorro en material es especialmente significativo si...

This research is focused on the influence of processing temperature on titanium matrix composites reinforced through Ti, Al, and B4C reactions. In order to investigate the effect of Ti-Al based intermetallic compounds on the properties of the composites, aluminum powder was incorporated into the starting materials. In this way, in situ TixAly...

This work focuses on the study of the microstructure, hardening, and stiffening effect caused by the secondary phases formed in titanium matrices. These secondary phases originated from reactions between the matrix and boron particles added in the starting mixtures of the composites. Not only was the composite composition studied as an...

The purpose of this research is to study the influence of the processing conditions that affect the final behaviour of specimens made from a 17-4PH composition powder without the necessary thermal treatment to be considered 17-4PH, which is manufactured using the additive technique known as plasma metal deposition (PMD). To that end, two walls...

Plasma metal deposition (PMD) is an interesting additive technique whereby diverse materials can be employed to produce end parts with complex geometries. This study investigates not only the effects of the manufacturing conditions on the final properties of 316L stainless steel specimens by PMD, but it also affords an opportunity to study how...

This research was carried out to determinate the effect of the atmosphere processing conditions (air and argon) and two specific thermal treatments, on the properties of specimens made from the nickel-based alloy Hastelloy C-22 by plasma transferred arc (PTA). Firstly, the additive manufacturing parameters were optimized. Following, two walls...

In the last decade, titanium metal matrix composites (TMCs) have received considerable attention thanks to their interesting properties as a consequence of the clear interface between the matrix and the reinforcing phases formed. In this work, TMCs with 30 vol % of B4C are consolidated by hot pressing. This technique is a powder metallurgy...