Development of a database for the prediction of phases in Pt–Al–Cr–Ru alloys for high-temperature and corrosive environments: Al–Cr–Ru

Süss, R.; Watson, Andy; Cornish, L.A.; Compton, D.N.

doi:10.1016/j.jallcom.2008.09.058

Cited by 4 publications

(3 citation statements)

References 50 publications

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“…5. Results from Süss et al [23] also show a similarly large compositional range for the B2 (RuAl) region at 600 C and 1000 C though not to the extent shown here. Lastly, samples A and B had the same target composition (Table 1) but due to apparent loss of Ru during preparation and arc-melting, these had different resulting microstructures as shown in Fig.…”

Section: Resultssupporting

confidence: 53%

Characterization of two-phase B2–HCP alloys in the Ru–Al–Cr system

et al. 2010

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Section: Resultssupporting

confidence: 53%

Characterization of two-phase B2–HCP alloys in the Ru–Al–Cr system

et al. 2010

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“…They were also harder than the eight ternary Pt-Al based alloys investigated by Hill (2001), where the hardest alloy had a Vickers hardness of 530 HV. However, Pt-Al-V (Odera et al, 2012a;Odera, 2013) and Pt-Cr-V alloys (Odera et al, 2012b;Odera, 2013) and Pt-Al-Cr alloys (Süss, 2007) were generally much harder than the current as-cast alloys, because many of the Pt-Al-V and Pt-Cr-V alloys contained the hard Pt-V intermetallic phases. The high hardness of some of the Pt-Al-Cr alloys was attributed to ~PtAl 2 , ~PtAl, and ~Pt 2 Al 3 .…”

Section: Discussionmentioning

confidence: 97%

“…One reason why V was selected as an addition to Pt-Al-based alloys was its high solubility in the solid-solution (Pt). It was hoped that this would increase the solid solution strengthening, and this occurred, since the hardnesses were higher than for the ternary alloys with the (Pt) and ~Pt 3 Al phases (Hill, 2001;Süss, 2007;Odera, 2013).…”

Section: Discussionmentioning

confidence: 99%

High-order additions to platinum-based alloys for high-temperature applications

Odera¹,

Papot²,

Couperthwaite³

et al. 2015

J. S. Afr. Inst. Min. Metall.

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Platinum-based alloys are being developed with microstructures similar to nickel-based superalloys for potential high-temperature applications in aggressive environments. Since the chemistries of nickel and platinum are similar, Pt-based alloys can be made with gamma prime ~Pt 3 Al precipitates in a gamma (Pt) matrix. Currently, the Pt-Al-Cr-Ru system is one of the bases for developing Pt-based alloys, where Al allows the formation of the Pt 3 Al precipitate and also gives protection from the alumina scale formed, Cr provides oxidation resistance and stabilization for the L1 2 ~Pt 3 Al phase, and Ru provides solid solution strengthening in the (Pt) matrix.Four Pt-Al-Cr-Ru-V and two Pt-Al-Cr-Ru-V-Nb alloys were made, with compositions based on a quaternary alloy, ~Pt 82 :Al 12 :Cr 4 :Ru 2 , which had previously been identified as having optimum properties. Four of the ascast alloys had the targeted two-phase structure of ~Pt 3 Al and (Pt), and two were single-phase ~Pt 3 Al. Vanadium partitioned more to (Pt) than to ~Pt 3 Al. There was an improvement in hardness compared to the quaternary alloys. The best addition of V was ~15 at.%; higher additions resulted in brittle intermetallic phases of the Pt-V system. The effect of Nb could not be ascertained because of its high losses.

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Experimental determination and thermodynamic reassessment of the Al–Cr–Ru ternary system

Ma,

Ke,

et al. 2024

Intermetallics

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Development of a database for the prediction of phases in Pt–Al–Cr–Ru alloys for high-temperature and corrosive environments: Al–Cr–Ru

Cited by 4 publications

References 50 publications

Characterization of two-phase B2–HCP alloys in the Ru–Al–Cr system

Characterization of two-phase B2–HCP alloys in the Ru–Al–Cr system

High-order additions to platinum-based alloys for high-temperature applications

Experimental determination and thermodynamic reassessment of the Al–Cr–Ru ternary system

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