Tuning microstructures and improving oxidation resistance of Nb-Si based alloys via electron beam surface melting
Source abstract
Abstract
Abstract The bottleneck for the application of Nb-Si based alloys as high-temperature alloys is their poor oxidation resistance. Here we present an approach to tune the microstructures and enhance the oxidation resistance via electron beam surface melting (EBSM) treatment. Significant microstructural refinement, higher volume fraction of silicides and controlled phase regime are achieved by EBSM. The oxidation tests at 1250 °C demonstrate a substantially improved oxidation resistance of the EBSM-processed alloy, with a thinner, less wrinkled oxide scale. A continuous silica layer within the oxide scale is produced on the remelted surface. The oxidation response to tunable microstructures is discussed.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Materials Characterization Techniques · Intermetallics and Advanced Alloy Properties · Semiconductor materials and interfaces
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (43)
Show source-provided references
1. Alloy design for aircraft engines10.1038/nmat4709 ↗
2. A review of very-high-temperature Nb-silicide-based composites10.1007/s11661-003-0269-8 ↗
3. Study of the fracture mechanism of NbSS/Nb5Si3 in situ composite: based on a mechanical characterization of interfacial strength10.1016/j.msea.2016.03.110 ↗
4. Deposition of a B-modified silicide coating for Nb-Si based alloy oxidation protection10.1016/j.corsci.2016.06.020 ↗
5. Microstructure evolution and oxidation behavior of B modified MoSi2 coating on Nb-Si based alloys10.1016/j.corsci.2015.12.003 ↗
6. Improvement in oxidation resistance of silicide coating on an Nb-Ti-Si based ultrahigh temperature alloy by second aluminizing treatment10.1016/j.corsci.2014.11.009 ↗
7. Alloying effects on the microstructure and properties of Nb-Si based ultrahigh temperature alloys10.1016/j.intermet.2015.12.002 ↗
8. Improvement in the oxidation resistance of Nb-Ti-Si-Cr-Al-Hf alloys containing alloyed Ge and B10.1016/j.corsci.2014.08.006 ↗
9. Cyclic oxidation response of multiphase niobium-based alloys10.1007/s11661-004-0370-7 ↗
10. Oxidation of Nb-Si-Cr-Al in situ composites with Mo, Ti and Hf additions10.1016/j.msea.2006.08.093 ↗
11. Influence of vanadium on the oxidation resistance of the intermetallic phase Nb5Si310.1007/s11085-014-9510-7 ↗
12. Precipitation of γNb5Si3 in Nb-Si based ultrahigh temperature alloys10.1016/j.intermet.2018.04.007 ↗
13. Simultaneous improvement in fracture toughness and oxidation resistance of Nb-Si based alloys by vanadium addition10.1016/j.msea.2017.06.052 ↗
14. The role of Dy and Hf doping on oxidation behavior of two-phase (γ′+β) Ni-Al alloys10.1016/j.corsci.2015.06.016 ↗
15. Effects of alloying on the microstructures and mechanical property of Nb-Mo-Si based in situ composites10.1016/j.intermet.2017.04.018 ↗
16. On the oxidation mechanism of niobium-base in situ composites10.1016/j.corsci.2012.03.037 ↗
17. Characterization of microstructure and oxidation resistance of Y and Ge modified silicide coating on Nb-Si based alloy10.1016/j.corsci.2016.04.026 ↗
18. Microstructural refinement and improvement of mechanical properties and oxidation resistance in EPM TiAl-based intermetallics with yttrium addition10.1016/S1359-6454(02)00006-X ↗
19. Microstructure and oxidation resistance of laser-remelted Mo-Si-B alloy10.1016/j.scriptamat.2007.01.025 ↗
20. Corrosion behavior of selective laser melted Ti-6Al-4V alloy in NaCl solution10.1016/j.corsci.2015.10.041 ↗
21. Regular eutectic and anomalous eutectic growth behavior in laser remelting of Ni-30wt%Sn alloys10.1016/j.actamat.2016.12.061 ↗
22. The effects of uncommon silicides on the oxidation behavior of alloys from the Nb-Cr-Si system10.1016/j.corsci.2012.04.029 ↗
23. Heat treatment induced phase transition and microstructural evolution in electron beam surface melted Nb-Si based alloys10.1016/j.apsusc.2017.05.248 ↗
24. CaRIne crystallography: the crystallographic software for research and teaching
25. In situ site-specific specimen preparation for atom probe tomography10.1016/j.ultramic.2006.06.008 ↗
26. The microstructure evolution of directionally solidified Nb-22Ti-14Si-4Cr-2Al-2Hf alloy during heat treatment10.1016/j.intermet.2013.02.022 ↗
27. Anomalous eutectic growth: II. The relationship between faceted/non-faceted eutectic structures10.1016/0022-0248(75)90090-1 ↗
28. Wrinkling of the oxide scale on an aluminum-containing alloy at high temperatures10.1016/0022-5096(95)00014-A ↗
29. Experimental studies and modeling of the oxidation of multiphase niobium-base alloys10.1016/j.corsci.2009.06.053 ↗
30. Numerical modeling of heat-transfer and the influence of process parameters on tailoring the grain morphology of IN718 in electron beam additive manufacturing10.1016/j.actamat.2016.03.063 ↗
31. Laser powder bed fusion additive manufacturing of metals; physics, computational, and materials challenges10.1063/1.4937809 ↗
32. Phase-field simulation of microstructure evolution of Ti-6Al-4V in electron beam additive manufacturing process
33. Prediction of primary dendritic arm spacing during laser rapid directional solidification of single-crystal nickel-base superalloys10.1016/j.jallcom.2016.06.289 ↗
34. Heat treating and melting material with a scanning laser or electron beam10.1063/1.324261 ↗
35. Sindo · 2003
36. The effect of nanocrystallization on the selective oxidation and adhesion of Al2O3 scales10.1007/BF01670500 ↗
37. Influence of grain size on the oxidation behavior of NbCr2 alloys at 950-1200°C10.1016/j.corsci.2008.11.014 ↗
38. Effects of nanometer Al2O3 particles on oxidation behaviors of laser cladding low Al NiCoCrAlY coatings10.1007/s11085-010-9197-3 ↗
39. High vacuum arc ion plating NiCrAlY coatings: microstructure and oxidation behavior10.1016/j.corsci.2015.02.032 ↗
40. Influence of siliconizing on the oxidation behavior of plasma sprayed MoSi2 coating for niobium based alloy10.1016/j.intermet.2016.01.006 ↗
41. The stress and spalling behavior of the oxide scale formed on polycrystalline Ni3Al10.1016/1359-6454(96)00009-2 ↗
42. Improvement in the oxidation resistance of Nb-Si based alloy by selective laser melting10.1016/j.corsci.2017.08.022 ↗
43. Towards the improvement of the oxidation resistance of Nb-silicides in situ composites: a solid state diffusion approach10.1016/j.corsci.2013.10.033 ↗