Structure and mechanical properties of mechanically alloyed Al/Al-Cu-Fe composites

Formation of Quasicrystalline Phases and Their Close Approximants in Cast Al-Mn Base Alloys Modified by Transition Metals

“…This has been confirmed by some recent research [3][4][5]. Another approach also developed in the 1990s [6] considered the production of composite materials where stable quasicrystals were mixed with pure Al powder and subsequently consolidated [7,8]. As expected, the resulting material exhibited high hardness.…”

Formation of decagonal quasicrystals in mechanically alloyed Al–Cu–Cr powders

“…Figure 3 shows that, in spite of the absence of noticeable thermal effects up to temperature of 530 C, even at this temperature several intermetallic compounds forms in the alloys. This is a number of the binary (CuAl 2 Examining the phase transformations in the Al 69 Cu 21 Cr 10 alloy, we notice that, as well as for two above alloys, ternary decagonal quasicrystalline phase forms, and its amount grows up to the temperature of 635 C, at this temperature alloy is nearly single-phase. A fraction of decagonal quasi-crystalline phase slightly decrease at higher temperatures due to the formation of the phase, named as w in [33], whose structure in this work was not indicated.…”

Microstructures and mechanical properties of Al-base composite materials reinforced by Al–Cu–Fe particles

“…While the small differences for the i-and -phases can be here attributed to the use of a higher load [27], there is no clear explanation to account for the factor of about 2 recorded for the -phase. More global measurements, that do not allow for extracting separate H value for each phase, were performed by [4] and [28] on Al MMCs. They indicate that H is higher for the i-phase reinforcement particles than for the -phase reinforcement particles, which support that H(i-phase) > H(-phase).…”