Effects of strain rate on tensile properties of TZM and Mo–5%Re

Processing of ZrC–Mo Cermets for High Temperature Applications, Part II: Pressureless Sintering and Mechanical Properties

“…8). The trend however, does decrease with increasing Mo content as expected based on the lower modulus of Mo (330 GPa) 24 and Mo 2 C (347–351 GPa) 25 compared with ZrC (395 GPa) 26 . The results were also compared with a value calculated using a volume‐dependent linear rule of mixtures, a Hashin and Shtrikman relation, 27 and a Fan et al 28 relation.…”

Preparation and ductile-to-brittle transition temperature of the La-TZM alloy plates

“…From the stress-strain curves and the data in Table 2, the tensile strength of the TZM alloy manufactured using the same process is 1096 MPa, while the strength of the La-TZM alloy is 1405 MPa at room temperature. Both properties are superior compared with the literature values [13][14][15][16]. The tensile elongation of the TZM alloy is 7%, while the La-TZM is 9.3%.…”

Effect of Prestrain and Stress Rate on Bauschinger Effect of Monotonically and Cyclically Deformed OFHC Copper

“…Figure 4(a) also shows that Bauschinger hardening parameter is higher for monotonic deformation compared to cyclic deformation for a certain amount of prestrain, whereas the effect of prestrain on Bauschinger hardening parameter is much higher in case of prior monotonic deformation in the forward direction due to more and more dislocation pilling up and lower rate of dislocation annihilation compared to cyclically deformed conditions. It has been studied by several investigators that increasing the stress rate the flow stress of the material increases by increasing mobile dislocation density and velocity [8][9][10][11][12] and hence resulting in more dislocation pile ups. This type of relationship is dependent on stress rate sensitivity of the materials.…”

“…Several investigators reported that mobile dislocation density and dislocation velocity are proportionally related to the strain rate or stress rate of deformation. With increase of the stress rate/strain rate yield strength and flow stress of the material increase due to higher mobile dislocation density and dislocation velocity [7][8][9][10][11][12] and thus resulting in more dislocation pile-ups. In this context it would be expected that increasing the stress rate of deformation higher back stress will be developed and consequently the Bauschinger parameters of the material is influenced when the change in stress rate is sufficient to significantly alter the work hardening behavior of that material [1,[13][14][15][16][17][18].…”