High resolution digital image correlation mapping of strain localization upon room and high temperature, high cycle fatigue of a TiAl intermetallic alloy
Source abstract
Abstract
Microplasticity in a lamellar TiAl alloy upon high cycle tensile fatigue was measured by high resolution digital image correlation strain mapping at several stress and cycle increments, at 25 °C and 670 °C, for two lamellar thicknesses. Plastic deformation occurred primarily in soft-mode colonies at both temperatures, operating by slip parallel to the lamellae, and near lamellar interfaces. Plastic strains generally decreased to zero by the colony boundary; strain transfer across such boundaries was rare at both temperatures. At 25 °C, the maximum applied stress influenced the number of slip bands more so than did the number of loading cycles.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Intermetallics and Advanced Alloy Properties · Microstructure and mechanical properties · Semiconductor materials and interfaces
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (35)
Show source-provided references
1. TiAl alloys in commercial aircraft engines10.1080/09603409.2016.1183068 ↗
2. Goold I. Rolls-Royce Advances Toward UltraFan; 2014.
3. Heat-resistant cast TiAl alloy for passenger vehicle turbochargers
4. Assessment of titanium aluminide alloys for high-temperature nuclear structural applications10.1007/s11837-012-0471-5 ↗
5. Recent progress in the high-cycle fatigue behaviour of γ-TiAl alloys
6. High-temperature application of titanium alloys in gas turbines. Material life cycle opportunities and threats – an industrial perspective10.1080/09603409.2016.1184423 ↗
7. Appel F, Paul JDH, Oehring M. Gamma titanium aluminide alloys : science and technology. 2011, Weinheim: Wiley-VCH. xvi, 745 p.10.1002/9783527636204 ↗
8. Assuring reliability of gamma titanium aluminides in long-term service
9. Early detection of crack initiation sites in TiAl alloys during low-cycle fatigue at high temperatures utilizing digital image correlation10.3139/146.110064 ↗
10. Strain accumulation in TiAl intermetallics via high-resolution digital image correlation (DIC)10.1016/j.proeng.2014.06.295 ↗
11. Digital image correlation-based analysis of strain accumulation on a duplex γ-TiAl10.1016/j.intermet.2016.05.013 ↗
12. Local deformation at micro-notches and crack initiation in an intermetallic γ-TiAl-alloy10.1111/ffe.12356 ↗
13. Plastic flow of γ-TiAl-based polysynthetically twinned crystals: micromechanical modeling and experimental validation10.1016/S1359-6454(98)00132-3 ↗
14. An experimental study of polycrystalline plasticity in lamellar titanium aluminide10.1016/j.ijplas.2019.02.013 ↗
15. Deformation of lamellar γ-TiAl below the general yield stress10.1016/j.actamat.2018.09.061 ↗
16. Edwards TEJ et al., The interaction of borides and longitudinal twinning in polycrystalline TiAl alloys. Acta Materialia, 2017. 140(Supplement C): p. 305–316.10.1016/j.actamat.2017.08.055 ↗
17. Stable speckle patterns for nano-scale strain mapping up to 700 °C10.1007/s11340-017-0317-8 ↗
18. Crystal plasticity analysis of deformation anisotropy of lamellar TiAl alloy: 3D microstructure-based modelling and in-situ micro-compression10.1016/j.ijplas.2019.04.012 ↗
19. Transverse deformation in a lamellar TiAl alloy at high temperature by in situ microcompression10.1016/j.actamat.2018.11.050 ↗
20. Longitudinal twinning in a TiAl alloy at high temperature by in situ microcompression10.1016/j.actamat.2018.01.007 ↗
21. Deformation of lamellar TiAl alloys by longitudinal twinning10.1016/j.scriptamat.2016.03.004 ↗
22. Slip bands in lamellar TiAl during high cycle fatigue microcompression by correlative total strain mapping, diffraction orientation mapping and transmission electron imaging10.1016/j.ijfatigue.2019.03.016 ↗
23. Globally optimal stitching of tiled 3D microscopic image acquisitions10.1093/bioinformatics/btp184 ↗
24. Fiji: an open-source platform for biological-image analysis10.1038/nmeth.2019 ↗
25. Digital image correlation under scanning electron microscopy: methodology and validation10.1007/s11340-013-9782-x ↗
26. Measurement of strain localization resulting from monotonic and cyclic loading at 650 °C in nickel base superalloys10.1007/s11340-017-0286-y ↗
27. Deformation of polysynthetically twinned crystals of TiAl with a nearly stoichiometric composition10.1080/01418619008231937 ↗
28. Room-temperature tensile deformation of polysynthetically twinned (PST) crystals of TiAl10.1016/0956-7151(92)90472-Q ↗
29. A new mechanism of strain transfer in polycrystals10.1038/s41598-020-66569-7 ↗
30. Fatigue strain mapping via digital image correlation for Ni-based superalloys: The role of thermal activation on cube slip10.1016/j.msea.2017.04.002 ↗
31. Slip transfer across γ-TiAl lamellae in tension10.1016/j.matdes.2018.02.072 ↗
32. Microsample tensile testing of nanocrystalline metals10.1080/01418610008212096 ↗
33. Microstructural statistics for fatigue crack initiation in polycrystalline nickel-base superalloys10.1007/s10704-017-0241-z ↗
34. Apparent Hall-Petch effects in polycrystalline lamellar TiAl10.1080/01418619708210284 ↗
35. Clemens H, Mayer S. Alloy design criteria for advance titanium aluminides. In IWTA2016. 2016. Tokyo, Japan.