Mechanical properties of cerium and a cerium–5wt% lanthanum alloy by nanoindentation and ultrasonic velocity measurements

Wheeler, D.W.; Zekonyte, Jurgita; Wood, R.J.K.

doi:10.1016/j.msea.2013.04.083

Cited by 17 publications

(12 citation statements)

References 27 publications

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“…Table 2 lists the derived elastic constants and mechanical properties of each cerium phase. The calculated Young’s modulus of the single crystalline γ-Ce phase is 24.17 GPa, which is comparable with the experimental value of 36.7 GPa reported in nanoindentation of its polycrystalline counterpart [10]. Furthermore, the calculated values of C44 and 1/2(c11-c12) differ by a factor of 3, which agrees well with the experimental value by using inelastic-neutron-scattering techniques [34].…”

Section: Methodssupporting

confidence: 86%

Molecular Dynamics Modeling and Simulation of Diamond Cutting of Cerium

et al. 2017

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The coupling between structural phase transformations and dislocations induces challenges in understanding the deformation behavior of metallic cerium at the nanoscale. In the present work, we elucidate the underlying mechanism of cerium under ultra-precision diamond cutting by means of molecular dynamics modeling and simulations. The molecular dynamics model of diamond cutting of cerium is established by assigning empirical potentials to describe atomic interactions and evaluating properties of two face-centered cubic cerium phases. Subsequent molecular dynamics simulations reveal that dislocation slip dominates the plastic deformation of cerium under the cutting process. In addition, the analysis based on atomic radial distribution functions demonstrates that there are trivial phase transformations from the γ-Ce to the δ-Ce occurred in both machined surface and formed chip. Following investigations on machining parameter dependence reveal the optimal machining conditions for achieving high quality of machined surface of cerium.

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Section: Methodssupporting

confidence: 86%

Molecular Dynamics Modeling and Simulation of Diamond Cutting of Cerium

et al. 2017

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“…In recent years, Ce-La alloys have been the subject of several studies, both theoretical and experimental, examining various aspects of the Ce-La system [2,5,6,[16][17][18]. Gibbs et al [2] performed electron probe microanalysis (EPMA) to map the La distribution in Ce-La alloys that had received homogenizing heat treatments at 546 °C, 585 °C and 633 °C.…”

Section: Introductionmentioning

confidence: 99%

“…In contrast to the corrosion behaviour, the mechanical properties of Ce-La alloys have been less well studied. A previous study by the present authors [16] described the use of nanoindentation and ultrasonic velocity measurements to obtain the mechanical properties of unalloyed Ce and a Ce-5 wt. % La alloy.…”

Section: Introductionmentioning

confidence: 99%

“…This required further work to investigate in more detail. Therefore, a further study was undertaken, one objective of which was to investigate the structure and mechanical properties of a range of Ce-La alloys from a different supplier, and which is of greater purity than the Ce-La alloy previously studied [16]. The alloys used in the present study also had a greater range of compositions, which enabled the effect of La content on the mechanical properties to be examined.…”

Section: Introductionmentioning

confidence: 99%

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Structure and mechanical properties of Ce-La alloys containing 3-10 wt. % La

Wheeler

Zekonyte

Wood

2021

Journal of Nuclear Materials

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“…Vickers macro indentations demonstrated cerium hydride (2.2 GPa) to be significantly harder than cerium metal (0.34 GPa) [5]. Nanoindentation has been used on cerium metal to obtain similar hardness values (0.4 GPa) to the macro indentation [8]. A thin region of stressed material was found to surround the cerium sites.…”

Section: Introductionmentioning

confidence: 99%