Influence of chemical composition on the room temperature plasticity of C15 Ca-Al-Mg Laves phases
Source abstract
Abstract
The influence of chemical composition changes on the room temperature mechanical properties in the binary Ca33Al67 C15 CaAl2 Laves phase were investigated in two ternary alloys with off-stoichiometric compositions with 5.7 at.% Mg substitution (Ca33Al61Mg6) and 10.8 at.% Mg and 3.0 at.% Ca substitution (Ca36Al53Mg11) and compared to the stoichiometric (Ca33Al67) composition. Cubic Ca-Al-Mg Laves phases with multiple crystallographic orientations were characterised and deformed using nanoindentation. The hardness and indentation modulus were measured to be 4.1 ± 0.3 GPa and 71.3 ± 1.5 GPa for Ca36Al53Mg11, 4.6 ± 0.2 GPa and 80.4 ± 3.8 GPa for Ca33Al61Mg6 and 4.9 ± 0.3 GPa and 85.5 ± 4.0 GPa for Ca33Al67, taken from our previous study, respectively. The resulting surface traces as well as slip and crack planes, were distinguished on the indentation surfaces, revealing the activation of several different {11n} slip systems, as further confirmed by conventional transmission electron microscopic observations. Additionally, the deformation mechanisms and corresponding energy barriers of activated slip systems were evaluated by atomistic simulations.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Metallurgical and Alloy Processes · Metal and Thin Film Mechanics · Aluminum Alloys Composites Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (93)
Show source-provided references
1. Early work on Laves phases in East Germany10.1016/j.intermet.2010.11.032 ↗
2. Laves phases: a review of their functional and structural applications and an improved fundamental understanding of stability and properties10.1007/s10853-020-05509-2 ↗
3. Point defects in binary Laves phase alloys10.1016/S1359-6454(99)00090-7 ↗
4. A geometric analysis of solubility ranges in Laves phases10.1016/0925-8388(95)01557-4 ↗
5. Dislocations in complex materials10.1126/science.1105962 ↗
6. The crystal chemistry of the Laves phases10.1107/S0365110X53000557 ↗
7. Gleitbanduntersuchungen während und nach Verformung der intermetallischen Verbindung MgZn210.1002/crat.19720071109 ↗
8. Temperature change experiments during secondary creep of the intermetallic compound MgZn210.1002/pssb.19690360224 ↗
9. Yield strength of the monocrystalline intermetallic compound MgZn210.1002/pssa.2210400213 ↗
10. Gittergeometrische Betrachtung der plastischen Verformung von Lavesphasen10.1002/crat.19680030308 ↗
11. Laves phases for high temperatures—Part II: stability and mechanical properties10.1016/S0966-9795(02)00025-0 ↗
12. Plasticity of the C15-CaAl2 Laves phase at room temperature10.1016/j.matdes.2022.111504 ↗
13. Gleitsysteme innermetallischer Verbindungen
14. Mechanical Behavior of MgCu2 Single Crystals
15. Deformation of a C15 Laves phase: twinning and synchroshear
16. Room temperature deformation behavior of the Hf–V–Ta C15 Laves phase10.1016/S0966-9795(02)00246-7 ↗
17. Deformation behaviour of the C15 Laves phase Cr2Nb10.1016/S0921-5093(97)00047-6 ↗
18. The mechanical properties and the deformation microstructures of the C15 Laves phase Cr2Nb at high temperatures10.1016/j.actamat.2006.10.048 ↗
19. Stacking-fault energy in the C15 Laves phase Cr2Nb10.1080/095008396180272 ↗
20. High temperature-room temperature deformation behavior of MgCu2 Laves phase intermetallic compound10.1016/0001-6160(89)90035-7 ↗
21. Mechanical properties of intermetallic compounds at elevated temperatures10.1007/BF03397778 ↗
22. Studying plasticity in hard and soft Nb–Co intermetallics10.1002/adem.201200175 ↗
23. Composition dependence of hardness and elastic modulus of the cubic and hexagonal NbCo2 Laves phase polytypes studied by nanoindentation10.1557/jmr.2019.384 ↗
24. Crystal structure and composition dependence of mechanical properties of single-crystalline NbCo2 Laves phase10.1016/j.actamat.2019.11.036 ↗
25. Microcompression of brittle and anisotropic crystals: recent advances and current challenges in studying plasticity in hard materials10.1557/mrc.2017.15 ↗
26. Critical resolved shear stress of activated slips measured by micropillar compression tests for single-crystals of Cr-based Laves phases10.1016/j.msea.2021.140861 ↗
27. Basal slip in Laves phases: the synchroshear dislocation10.1016/j.scriptamat.2019.03.016 ↗
28. Thermally activated nature of synchro-Shockley dislocations in Laves phases10.1016/j.scriptamat.2023.115588 ↗
29. Unveiling the mechanisms of motion of synchro-Shockley dislocations in Laves phases
30. Synchroshear of laves phases
31. Synchroshear transformations in Laves phases10.1016/0956-716X(93)90468-8 ↗
32. Structure and stability of Laves phases. Part I. Critical assessment of factors controlling Laves phase stability10.1016/j.intermet.2004.02.010 ↗
33. Laves-Phase Structural Changes in the System CaAl2-x Mg x10.1021/ic020596m ↗
34. Phase field and room-temperature mechanical properties of C15 Laves phase in Nb–Hf–Cr and Nb–Ta–Cr alloy systems10.1016/j.jallcom.2005.11.087 ↗
35. Factors affecting the room-temperature mechanical properties of TiCr2-base Laves phase alloys10.1016/S0921-5093(97)00526-1 ↗
36. HfCo2 Laves phase intermetallics—Part I: solubility limits and defect mechanisms10.1016/S0966-9795(01)00068-1 ↗
37. HfCo2 Laves phase intermetallics—Part II: elastic and mechanical properties as a function of composition10.1016/S0966-9795(01)00067-X ↗
38. The alloying effect on the high temperature deformation of Laves phase NbCr2 intermetallic compound10.1016/S0921-5093(97)00338-9 ↗
39. Deformability improvement in C15 NbCr2 intermetallics by addition of ternary elements10.1016/1359-6454(95)00174-3 ↗
40. Defects and site occupancies in Nb-Cr-Ti C15 Laves phase alloys10.1016/S1359-6462(98)00205-X ↗
41. Elastic and mechanical properties of Nb (Cr, V) 2 C15 Laves phases10.1016/S0921-5093(97)00589-3 ↗
42. Phase stability and defect structure of the C15 Laves phase Nb (Cr, V) 210.1016/S1359-6454(97)00291-7 ↗
43. Vacancy induced anomalies in the Laves phase CeNi2
44. Rare-earth intermediate phases VI. Pseudo-binary systems between cubic laves phases formed by rare-earth metals with iron, cobalt, nickel, aluminium and rhodium10.1016/0022-5088(68)90039-8 ↗
45. Rare earth intermediate phases: III. The cubic laves phases formed with aluminium and cobalt10.1016/0022-5088(65)90020-2 ↗
46. Systematics of the intra-rare-earth binary alloy systems10.1016/0022-5088(85)90387-X ↗
47. Binary rare earth Laves phases—An overview10.1524/zkri.2006.221.5-7.375 ↗
48. Homogeneity range and order–disorder transitions in R1− xNi2 Laves phase compounds10.1016/j.intermet.2005.08.003 ↗
49. Änderung von Verformungseigenschaften der intermetallischen Verbindung MgZn2 im Homogenitätsbereich10.1002/crat.19760111110 ↗
50. Transmissionselektronenmikroskopische Untersuchung der Defektstruktur der intermetallischen Verbindung MgZn210.1002/crat.19750100804 ↗
51. The mobility of grown-in dislocations in the intermetallic compound MgZn2 during prismatic slip10.1002/pssa.2210250125 ↗
52. First-principles study of point defects in C14 MgZn2 Laves phase10.1016/j.jallcom.2015.09.142 ↗
53. Long-period stacking variants and their electron-concentration dependence in the mg-base friauf–laves phases10.1107/S0567740877008784 ↗
54. Structural studies of stacking variants in Mg-base Friauf–Laves phases10.1107/S0567740880006565 ↗
55. Defect phases–thermodynamics and impact on material properties10.1080/09506608.2021.1930734 ↗
56. Allen · 1998
57. Room-temperature deformation and stress-induced phase transformation of laves phases in Fe-10 at.% Zr alloy
58. The effect of ternary addition on structure and stability of NbCr2 Laves phases10.1557/JMR.1998.0350 ↗
59. Nanoindentation study on solid solution softening of Fe-rich Fe2Nb Laves phase by Ni in Fe–Nb–Ni ternary alloys10.1016/j.intermet.2015.11.003 ↗
60. Deformation twinning in intermetallic compounds—The dilemma of shears vs. shuffles10.1016/0921-5093(93)90367-N ↗
61. Deformation of C15 Laves phase alloys10.1557/PROC-364-1197 ↗
62. An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments10.1557/JMR.1992.1564 ↗
63. Measurement of hardness and elastic modulus by instrumented indentation: advances in understanding and refinements to methodology10.1557/jmr.2004.19.1.3 ↗
64. LAMMPS-a flexible simulation tool for particle-based materials modeling at the atomic, meso, and continuum scales10.1016/j.cpc.2021.108171 ↗
65. Active learning of linearly parametrized interatomic potentials10.1016/j.commatsci.2017.08.031 ↗
66. Moment tensor potentials: a class of systematically improvable interatomic potentials10.1137/15M1054183 ↗
67. Systematic atomic structure datasets for machine learning potentials: application to defects in magnesium10.1103/PhysRevB.107.104103 ↗
68. Modified embedded-atom method interatomic potentials for Mg–Al–Ca and Mg–Al–Zn ternary systems10.1016/j.jma.2020.09.006 ↗
69. Atomsk: a tool for manipulating and converting atomic data files10.1016/j.cpc.2015.07.012 ↗
70. Assessment and optimization of the fast inertial relaxation engine (fire) for energy minimization in atomistic simulations and its implementation in lammps10.1016/j.commatsci.2020.109584 ↗
71. Structural relaxation made simple10.1103/PhysRevLett.97.170201 ↗
72. A climbing image nudged elastic band method for finding saddle points and minimum energy paths10.1063/1.1329672 ↗
73. Improved tangent estimate in the nudged elastic band method for finding minimum energy paths and saddle points10.1063/1.1323224 ↗
74. Optimization methods for finding minimum energy paths10.1063/1.2841941 ↗
75. Finding and characterising active slip systems: a short review and tutorial with automation tools10.3390/ma14020407 ↗
76. Room temperature deformation in the Fe7Mo6 μ-Phase10.1016/j.ijplas.2018.05.002 ↗
77. Plastic deformation of the CaMg2 C14-Laves phase from 50 to 250 °C10.1016/j.mtla.2021.101237 ↗
78. VESTA 3 for three-dimensional visualization of crystal, volumetric and morphology data10.1107/S0021889811038970 ↗
79. Universal elastic anisotropy index10.1103/PhysRevLett.101.055504 ↗
80. Elastic constants of some MAl2 single crystals10.1063/1.1663118 ↗
81. A. Tehranchi, et al., Phase stability and defect studies of Mg-based Laves phases using defect phase diagrams. arXiv preprint arXiv:2303.09576, 2023.
82. Hybrid calphad DFT modelling of the Mg–Al–Ca system10.1016/j.calphad.2023.102577 ↗
83. Laves phases in Mg-Al-Ca alloys and their effect on mechanical properties10.1016/j.matdes.2022.111470 ↗
84. R.G. Forbes, The prediction of zero-barrier evaporation field: datasheet from Condensed Matter. Volume 45B: “Physics of Solid Surfaces” G. Chiarotti and P. Chiaradia, Editors., Springer-Verlag GmbH Germany.
85. Influence of composition and crystal structure on the fracture toughness of NbCo2 Laves phase studied by micro-cantilever bending tests10.1016/j.matdes.2018.02.045 ↗
86. First-principles investigation of point defect and atomic diffusion in Al2Ca10.1016/j.jpcs.2016.11.017 ↗
87. Plastic deformation of single crystalline C14 Mg2Ca Laves phase at room temperature10.1016/j.msea.2019.05.092 ↗
88. Dislocation dipoles and dislocation loops
89. Dipole formation and yielding in a two-dimensional continuum dislocation model10.1103/PhysRevB.90.094118 ↗
90. Microstructure characterization and mechanical properties of a Laves-phase alloy based on Cr2Nb10.1016/j.ijrmhm.2012.08.009 ↗
91. Stoichiometry and alloying effects on the phase stability and mechanical properties of TiCr2-base Laves phase alloys
92. Micromechanism in fracture toughness of NbCr2 laves phase improved by nickel alloying: first-principles calculation10.1016/j.jallcom.2020.158040 ↗
93. Fabrication and toughening of NbCr2 matrix composites alloyed with Ni obtained by powder metallurgy10.1016/j.msea.2008.10.004 ↗