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

Molecular Dynamics Modeling and Simulation of Diamond Cutting of Cerium

“…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].…”

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

“…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.…”

“…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.…”

“…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.…”

Probing the cerium/cerium hydride interface using nanoindentation

“…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.…”