Experiments of the ratchetting behavior of AISI 316L(N) austenitic steel at room temperature

Article Abstract:

Uniaxial isothermal loading conditions with low mean stresses and high stress amplitudes produce ratchetting in AISI 316L(N) austenitic stainless steel at room temperature. The uniaxial tension-compression ratchetting tests reveal that shakedown does not occur even at low loads. The ratchet strain increments become quite small under these conditions. Increasing the mean stress level, while keeping the maximum load constant increases the ratchetting increments. However, a decrease in the maximum load results in immediate shakedown.

Testing, Observations, Stainless steel, Strains and stresses, Stresses (Materials), Steel, Stainless

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An experimental study of ratchetting during indentation of 316L stainless steel

Article Abstract:

Research was conducted to examine the degradation of the joint between the implant or milled rod of 316L stainless-steel surgical structures using the Scanning Electronic Microscopic technique. The life of the prosthesis was predicted using a process based on cyclic indentation tests. Results showed that the ratchetting rate is not affected by the compressive residual stresses, viscous effects and tensile of less than 200 MPa.

Research, Metals, Metal fatigue, Implants, Artificial, Prostheses and implants

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Transformation textures in unstable austenitic steel

Article Abstract:

The development of a new formulation of the austenite lattice spin that models martensitic transformation coupled with plastic flow in austenite as an extension to the micromechanical model is presented. The aim of this study is to link the non-classic stable evolution of the microstructure to the induced texture of this new kind of material.

Analysis, Study and teaching, Lattice dynamics, Properties, Microstructure, Microstructures

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