A.C. de Oliveira Hirschmann, W. Waldeck Bose, D. Spinelli, L. V. Vareda, C. de Moura Neto

The temperature influence on the monotonic and low-cycle fatigue properties of a Cr-Mn-N austenitic stainless steel, employed in the manufacture of drill collar connections was investigated. The temperature dependence of tensile properties was determined and it was found that the yield strength, ultimate strength and total elongation values decreased significantly in the range between room temperature and 400°C. The low cycle fatigue testing was carried out at room temperature and 300°C. The results showed great influence of temperature at 300°C in the short and long fatigue lives range. This behavior was consequence of the reduction with temperature of the monotonic parameters.

Valuation of monotonic

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