Effect of preloading on creep resistance in bending of a strip of bronze BrBNT1, 9Mg

Conclusions

• 1. On the creep curve of specimens, like on the creep curve of aneroid barometers, we can distinguish two stages: nonsteady and steady-state creep.

• 2. Producing a field of residual deformations in the specimens by means of preliminary loading makes it possible to reduce the creep rate at the steady-state stage.

• 3. The greater the residual deformation at the initial loading is, the lower is the creep rate at its steady-state stage.

• 4. With rising test temperature the steady-state creep rate somewhat increases, and when σ_o increases, it decreases.

• 5. Increased creep stress σ_c with the same initial residual stress σ_o leads to increased steady-state creep rate.