What is it about?
The multiaxial ratcheting behaviors of polycrystalline 20 ordinary carbon steel were investigated at room temperature. The macroscopic experimental results showed that the studied multiaxial ratcheting depends greatly on the mean stress, stress amplitude and loading path. The macroscopic multiaxial ratcheting behaviors can be qualitatively correlated with the microscopic observation of the dislocation patterns and their evolution.
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Why is it important?
The past microscopic observations on 20 carbon steel were performed only for the metals subjected to the uniaxial/multiaxial strain-controlled cyclic loading, rather than the stress-controlled cyclic loading, i.e., ratcheting. This work revealed the dislocation based mechanism of racheting behavior of 20 carbon steel, which provided a deep understending of 20 carbon steel under stress-controlled cyclic loading.
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This page is a summary of: Multiaxial ratcheting of 20 carbon steel: Macroscopic experiments and microscopic observations, Materials Characterization, September 2013, Elsevier,
DOI: 10.1016/j.matchar.2013.05.014.
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