Mechanical properties of quasicrystalline Al–Cu–Fe coatings with submicron-sized grains

Milman, Yu.V.; Lotsko, D. V.; Дуб, С. Н.; Ustinov, А.I.; Поліщук, С. С.; Ul’shin, S. V.

doi:10.1016/j.surfcoat.2006.10.048

Cited by 34 publications

(21 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…. ._6,0 GPa for both substrate temperatures of 940 K and 470 K. It should be noted that microhardness of QC Al--Cu--Fe coatings exceeds one of similar bulk QC materials produced by metallurgical method [6].…”

Section: Surfaces / Thin Filmsmentioning

confidence: 89%

“…. 110 microns were deposited on titanium substrates using a single Rod-Fed Electron-Beam source [6] in the vacuum evaporation process. The ingot of the initial alloy of 50 mm diameter and 200 mm length was placed in a copper water-cooled crucible and the above alloy was added to the melt at a constant rate.…”

Section: Methodsmentioning

confidence: 99%

“…It is known also that microstructural characteristics of quasicrystalline materials (QCs) affect essentially their mechanical properties [5][6][7]. The effect manifests itself in a nonmonotonic dependence of microhardness on the grain size [5] as well as in the change of an extent of hardening stage in the stress-strain curves at the decreasing of the grain size in QCs [6].…”

Section: Introductionmentioning

confidence: 99%

“…The effect manifests itself in a nonmonotonic dependence of microhardness on the grain size [5] as well as in the change of an extent of hardening stage in the stress-strain curves at the decreasing of the grain size in QCs [6]. Moreover, it has been theoretically predicted [7] that the decreasing of the grain size in QCs may result in facilitation of processes of both motion and multiplication of dislocations as well as in an exit of the dislocations and phason defects to the grain boundaries.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Structure and properties of quasicrystalline and approximant EBPVD coatings of Al-based systems

Ustinov¹,

Поліщук²,

Scorodzievskii³

et al. 2009

Zeitschrift Für Kristallographie - Crystalline Materials

View full text Add to dashboard Cite

Abstract. This paper considers main features of the formation of Al--Cu--Fe and Al--Cr--Fe coatings with complex crystalline structures using high-rate electron beam physical vapour deposition (EBPVD). It is shown that the deposition of the coatings at substrate temperatures below approximately 570 K leads to the formation of nanostructured quasicrystalline or approximant phases. Mechanical behaviour at static and dynamic loadings of the coatings was investigated. It is established that the decreasing of the grain size in the materials to nanoscale values results in significant enhancement of their damping capacity (a mechanical energy dissipation in the materials) at alternate strains. Possibilities of the use of materials based on quasicrystalline and/or approximant phases as hard and high damping coatings for the prevention of early destruction of gas turbine blades are discussed.

show abstract

Section: Surfaces / Thin Filmsmentioning

confidence: 89%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Structure and properties of quasicrystalline and approximant EBPVD coatings of Al-based systems

Ustinov¹,

Поліщук²,

Scorodzievskii³

et al. 2009

Zeitschrift Für Kristallographie - Crystalline Materials

View full text Add to dashboard Cite

show abstract

“…It can be assumed that similar mechanisms will work for quasicrystalline alloys. Earlier, the hard ening effect of quasicrystalline Al-Cu-Fe coatings with submicron sized grains was demonstrated by Milman et al [11] using a set of micro and nanoin dentation techniques. The formation of lamellar structures, as a rule, is the result of structural phase transformations associated either with doping the materials or with using their heat treatment.…”

Section: Introductionmentioning

confidence: 97%

Lamellar structure and nanomechanical properties of quasicrystalline Al-Cu-Fe alloys

et al. 2013

View full text Add to dashboard Cite

Abstract-The kinetics of structural phase transformations in quasicrystal forming Al-Cu-Fe alloys with compositions in the region of stability of the icosahedral (i) phase has been investigated. It has been shown that, depending on the development of metastable transformations i pentagonal phases P1 and P2, a homogeneous lamellar structure (i + P1 + P2) or a polygrain i phase is formed in the alloys. The P-h dia grams obtained upon nanoindentation, atomic force microscopy, and scanning electron microscopy of indentations have demonstrated signs of elasto plastic deformation of the alloys with lamellar and polygrain icosahedral structures. It has been found that, in contrast to the polygrain icosahedral alloys with a normal size effect of nanoindentation, the alloys with a lamellar structure are characterized by a nonmonotonic dependence of the hardness (H) on the maximum load (P max ) and exhibit the effect of strain hardening in the range of loads 50 mN ≤ P max < 500 mN. The strain hardening is considered as the result of resistance exerted by boundaries of the lamellar structure to the development of plastic deformation.

show abstract

Nanoindentation of Hybrid Foams

Jung

Chen

Diebels

2017

Applied Nanoindentation in Advanced Materials

View full text Add to dashboard Cite

Mechanical properties of quasicrystalline Al–Cu–Fe coatings with submicron-sized grains

Cited by 34 publications

References 26 publications

Structure and properties of quasicrystalline and approximant EBPVD coatings of Al-based systems

Structure and properties of quasicrystalline and approximant EBPVD coatings of Al-based systems

Lamellar structure and nanomechanical properties of quasicrystalline Al-Cu-Fe alloys

Nanoindentation of Hybrid Foams

Contact Info

Product

Resources

About