An experimental study on the effect of prior plastic straining on creep behavior of 304 stainless steel

Article Abstract:

The effect of prior plastic strain and strain-rate on the creep response of 304 stainless steel is studied. Rough-machined cylindrical steel specimens are subjected to high-temperature heat treatments and subsequently cooled to normal room temperature. All specimens are then tested in a modified MTS servo-controlled system. Results reveal that plastic prestrain influences the initial and the stable creep strain-rate while the effect of the plastic strain-rate is observed only during the primary stage of creep.

Plasticity, Stainless steel, Steel, Stainless

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An investigation of transient creep by means of endochronic viscoplasticity and experiment

Article Abstract:

A study of the metal creeping performed on 304 stainless-steel specimens by a viscoplastic endochronic theory reveals the greater creep strain for a test with a fixed stress-rate preloading than that for a constant strain-rate preloading for identical hold stress. The plasticity-creep interaction is responsible for this observation. The preloading strain rate is followed by the creep strain rate.

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Fracture toughness of highly ordered carbon nanotube/alumina nanocomposites

Article Abstract:

The fracture strength of highly ordered carbon-nanotube-reinforced alumina composites is computed using experimental data on nanoindentation cracking. The results indicate that the residual pressure and nanotube connection play crucial roles in the nanocomposite fracture.

Measurement, Residual stresses, Mechanical properties, Nanotubes, Fracture (Materials)

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