Nanoindentation based properties of Inconel 718 at elevated temperatures: A comparison of conventional versus additively manufactured samples

High-Temperature Nano-Indentation Creep Behavior of Multi-Principal Element Alloys under Static and Dynamic Loads

“…The stress exponent for Ni dropped from 135 at 298 K to 50-60 at 573 K, likely due to thermally activated dislocations at elevated temperature. In a similar study, the stress exponent was found to be in the range of 20-60 for IN-718 at room temperature and decreased to 8-18 at 923 K [32]. The magnitude of stress exponent depends on the balance between generation and annihilation of dislocations [33].…”

“…In addition, Ni-based superalloy (IN-718) showed activation volume in the range of 0.05 to 0.1 nm 3 within temperature range of 298 K to 923 K in tensile creep experiment [32]. The temperature dependence of indentation creep rate may be expressed as a power-law relation as [47]:…”

Experimental study of anisotropic constitutive behavior of β-HMX crystals via nanoindentation and small-scale dynamic impact

“…This section covers brief explanation of the experimental methods and theories to be used in this work. These methods have been covered in detail in previous works [18][19][20][21].…”

“…Nanoindentation has been used in multiple studies of material elastic behavior and has proven to be a reliable technique to measure local elastic material properties [21][22][23][24], extending to elastic properties of Ems [5].…”

“…Sample crystals were oriented with the loading plane of interest perpendicular to the indenter and indentations were spaced with a minimum of 100 μm between each indent to limit the possibility of coalescence between indents. The machine compliance is corrected as detailed in previous work [21] (Fig. 3b).…”