THE INFLUENCE OF CONSTRUCTION METHOD SELECTION ON THE CHARACTER OF HARDNESS CURVE OF AISI316Cu ACID RESISTANT STEEL
DOI:
https://doi.org/10.7494/mafe.2012.38.2.117Keywords:
acid resistant steel, uniaxial tension, frictionless compression, multi-pass wire drawing, hardness curveAbstract
The paper presents the experimental investigations of AISI 316Cu austenitic acid resistant steel, which aimed at the determination of the characteristic of this steel in a form of hardness curve, i.e. the relationship between hardness and effective strain. Three different methods were applied: the first one was based on uniaxial tension, the second one was based on frictionless compression of Rastegaev specimens, and the third one was based on multi-pass wire drawing process. As a result, three series of specimens were obtained, suitable metallographic specimens were prepared and hardness measurements were made on each specimen’s cross section. The results of measurements combined with the calculations of uniform strain performed for each specimen, made it possible, with application of approximation by polynomial, to construct the functional relationship described by the equation of hardness curve of the steel under investigation. The determination of such type of material’s characteristic allows to practically evaluate the state of strain and, if the flow curve is also known, the flow stress in a local scale, by means of hardness measurements.
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References
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