Element accumulation beneath the scale/alloy interface of a CoNiCrAlReY alloy
Source abstract
Abstract
In the present study, two types of subscale Cr and Re accumulation found at scale/alloy interface of two batches of Co32Ni21Cr10Al3.5ReY alloys are described. During oxidation, one alloy developed a supersaturated Cr-Re rich layer and another formed Cr-Re precipitates beneath the oxide in the subscale region. Diffusional and thermodynamic modelling showed the accumulation is a result of decreasing Cr and Re chemical potentials with Al depletion. The observed difference in accumulation forms is caused by the different phases in two alloys, with the former being gamma, beta, alpha, sigma and gamma, beta and the latter having only gamma, beta and sigma. (C) 2014 Elsevier Ltd. All rights reserved.
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Research context
OpenAlex topics: High-Temperature Coating Behaviors · High Temperature Alloys and Creep · High Entropy Alloys Studies
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References (30)
Show source-provided references
1. Wallwork · Rep. Prog. Phys. · 1976 · 39 · 40110.1088/0034-4885/39/5/001 ↗
2. Prescott · Oxid. Met. · 1992 · 38 · 23310.1007/BF00666913 ↗
3. Pillai · Corros. Sci. · 2013 · 69 · 18110.1016/j.corsci.2012.11.040 ↗
4. Pillai · Corros. Sci. · 2013 · 75 · 2810.1016/j.corsci.2013.05.013 ↗
5. Whittle · Corros. Sci. · 1972 · 12 · 86910.1016/S0010-938X(72)80016-7 ↗
6. S. Salam, Y.-D. Zhang, H.-F. Wang, C. Zhang, Z.-G. Yang, Thermodynamic and kinetic modelling of a bond coat alloy: oxidation induced depletion and its effect on microstructure and material behavior, in: TMS 2014 Supplemental Proceedings, Springer, Berlin, 2014, pp. 479–486.10.1002/9781118889879.ch58 ↗
7. Naumenko · J. Mater. Sci. · 2009 · 44 · 168710.1007/s10853-009-3284-3 ↗
8. Brumm · Corros. Sci. · 1993 · 34 · 54710.1016/0010-938X(93)90271-H ↗
9. Chyrkin · Oxid. Met. · 2011 · 75 · 14310.1007/s11085-010-9225-3 ↗
10. Asensio · Electrochem. Solid-State Lett. · 2011 · 14 · P1710.1149/1.3590258 ↗
11. Lan · Oxid. Met. · 2011 · 75 · 7710.1007/s11085-010-9221-7 ↗
12. Salam · Surf. Coat. Technol. · 2013 · 236 · 51010.1016/j.surfcoat.2013.10.059 ↗
13. The application of calphad calculations to Ni-based superalloys
14. Gesmundo · Oxid. Met. · 2003 · 59 · 6310.1023/A:1023065915321 ↗
15. Brumm · Corros. Sci. · 1992 · 33 · 167710.1016/0010-938X(92)90002-K ↗
16. Monceau · Oxid. Met. · 1998 · 50 · 47710.1023/A:1018860909826 ↗
17. Guo · Corros. Sci. · 2014 · 88 · 19710.1016/j.corsci.2014.07.036 ↗
18. Liang · J. Mater. Sci. Technol. · 2011 · 27 · 40810.1016/S1005-0302(11)60083-2 ↗
19. Klein · Corros. Sci. · 2011 · 53 · 202710.1016/j.corsci.2011.02.033 ↗
20. C.S. Giggins, F.S. Pettit, Oxide Scale Adherence Mechanisms and the Effects of Yttrium, Oxide Particles and Externally Applied Loads on the Oxidation of NiCrAl and CoCrAl Alloys, Report ARL TR 75-0234: NTIS, Clearinghouse, Springfield, VA, USA, 1975, p. 18.
21. Yano · Phys. Status Solidi A · 1997 · 160 · 44910.1002/1521-396X(199704)160:2<449::AID-PSSA449>3.0.CO;2-C ↗
22. Costa · Phys. Status Solidi A · 2001 · 183 · 23510.1002/1521-396X(200102)183:2<235::AID-PSSA235>3.0.CO;2-Z ↗
23. Sieurin · Mater. Sci. Eng. A · 2007 · 444 · 27110.1016/j.msea.2006.08.107 ↗
24. Wolff · Mater. Charact. · 1992 · 28 · 13910.1016/1044-5803(92)90037-I ↗
25. Premachandra · Mater. Sci. Technol. · 1992 · 8 · 43710.1179/mst.1992.8.5.437 ↗
26. The Co–Cr (cobalt–chromium) system10.1007/BF02843315 ↗
27. Diffusion process simulations – an overview of different approaches
28. Hou · J. Am. Ceram. Soc. · 2003 · 86 · 66010.1111/j.1151-2916.2003.tb03355.x ↗
29. Hou · J. Mater. Sci. Lett. · 2000 · 19 · 57710.1023/A:1006774111370 ↗
30. Czech · Surf. Coat. Technol. · 1995 · 76–77 · 2810.1016/0257-8972(95)02546-4 ↗