Elisa Maria Ruiz-Navas

TL;DR: In this paper, a method for recycling aluminium alloy chips by cold and hot pressing followed by hot extrusion was studied as well as the possibility of using this method to recycle aluminium matrix composite chips.

TL;DR: This processconsistsofrepeatedwelding-fracturing-welded-weildingwith-aductile-brittlesystem, thecharacteristicsofthepowderwillbesuchastoenhancethe propertiesofthecompositematerials, andthemechanicalpropertiesoftheconsolidatedmaterialsisnotwell-determined as mentioned in this paper.

TL;DR: In this article, a high energy horizontal ball mill (Zoz attritor) was used to produce aluminium-based metal matrix composite powders, and the influence of the mechanical alloying parameters on morphology, particle size, microhardness, and microstructure of the final powder was studied.

TL;DR: In this paper, the authors investigated the performance of a composite material reinforced with zirconium diboride by mechanical alloying followed by cold pressing and hot extrusion, and compared the results with the same composite produced by conventional powder metallurgy (PM), and showed that the incorporation of the ZrB2 particles produces only a small increase in the material hardness, but a small decrease in the UTS.

Abstract: The extensive industrial employment of titanium is hindered by its high production costs where reduction of these costs can be achieved using cheap alloying elements and appropriate alternative processing techniques. In this work the feasibility of the production of low-cost titanium alloys is addressed by adding steel to pure titanium and processing the alloys by powder metallurgy. In particular, a spherical 4140 LCH steel powder commonly used in metal injection moulding is blended with irregular hydride-dehydride Ti. The new low-cost alloys are cold uniaxially pressed and sintered under high vacuum and show comparable properties to other wrought-equivalent and powder metallurgy titanium alloys. Differential thermal analysis and X-ray diffraction analyses confirm that Ti can tolerate the employment of iron as primary alloying element without forming detrimental TiFe-based intermetallic phases. Thus, the newly designed α+β alloys could be used for cheaper non-critical components.