Structural characteristics and thermal stability of Al–5.7Cr–2.5Fe–1.3Ti alloy produced by powder metallurgy

Vojtěch, Dalibor; Michalcová, Alena; Pilch, Ján; Šittner, Petr; Šerák, Jan; Novák, Pavel

doi:10.1016/j.jallcom.2008.07.019

Cited by 22 publications

(9 citation statements)

References 21 publications

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“…The dotted lines in Fig. 1 correspond to the hardness values reported in the literature [4,8] for one of the hardest conventional commercial Al alloys, 7075-T6. All the as-spun alloys were significantly harder than 7075-T6; however, after heat treatment, only the ternary, Ti-and V-containing alloys were harder than 7075-T6, the Nb alloy being similar to 7075-T6 and the Ta alloy being a little softer.…”

Section: Microhardness Testingmentioning

confidence: 81%

“…They obtained extruded bars with proof strength of 200 MPa at 350°C. Finally, Vojtech et al [4] studied a similar alloy, with a composition of Al 95.2 Cr 2.9 Fe 1.2 Ti 0.7 (at.%), also producing extruded bars from gas-atomized powder with particle size fractions below 45 lm. In this case, the UTS obtained was 150 MPa at 350°C.…”

Section: Introductionmentioning

confidence: 99%

“…The microhardness of conventional commercial 7075-T6 Al alloy is shown for comparison (dashed line)[4,8].…”

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confidence: 99%

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Nanoquasicrystalline Al–Fe–Cr-based alloys. Part II. Mechanical properties

et al. 2009

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Section: Microhardness Testingmentioning

confidence: 81%

Section: Introductionmentioning

confidence: 99%

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Nanoquasicrystalline Al–Fe–Cr-based alloys. Part II. Mechanical properties

et al. 2009

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“…For example, [30][31][32][33]) under subsequent heating for deformation or during thermal treatment. The size of these particles varies greatly: from 10 nm to tenths of a micrometer.…”

Section: Phase Composition Of Rapidly Crystallized Aluminum Alloysmentioning

confidence: 99%

Effect of the structure and chemical inhomogeneity of rapidly solidified powders on the properties of aluminum alloys

Krainikov

2010

Powder Metall Met Ceram

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The paper examines the effect of chemical and structural inhomogeneity formed in the rapid crystallization of aluminum powders on the structure and mechanical properties of alloys produced from these powders. The powders are obtained by high-pressure water atomization. High-strength and high-temperature Al-Zn-Mg, Al-Zn-Mg-Cu, Al-Fe-Cr, Al-Cr-Zr, and Al-Fe-Ce alloys additionally doped with transition metals and scandium are studied. Auger electron spectroscopy, secondary ion mass spectroscopy, and scanning and transmission electron microscopy are used. To examine mechanical properties, tensile tests at room and elevated temperatures are used. The contribution of different doping elements to the segregation and formation of an oxide film on the powders and their effect on the phase composition and mechanical properties are studied. It is shown that the cooling rate determines characteristics of the alloys.

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“…By using a pack aluminizing process on a Cr-electroplated specimen, Xiang et al [12] coated the steel substrate with a protective layer composed of Cr 4 Al 9 , CrAl 4 , and Cr 5 Al 8 for steam oxidation resistance. Vojtĕch et al [13] indicated that Al-based alloys added with chromium aluminide particles were utilized in the automotive and aerospace industries for the high-temperature applications, as a consequence of the improvement in the thermal stability, corrosion resistance, and tensile strength. Based upon an investigation of the CreAleSi ternary system, Gupta [14] reported that due largely to the formation of chromium aluminides and silicides the addition of Cr increased the strength of the AleSi alloy.…”

Section: Introductionmentioning

confidence: 99%