Influence of Martensitic Transformation on the Fatigue of Low Temperature Metastable Stainless Steel

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Abstract:

The influence of martensitic transformation on the fatigue of AISI 316 type stainless steel, which presents a low temperature metastable behavior, was investigated at-196 and 25°C. Fatigue tests were conducted on both annealed and cold worked conditions. The results from stress versus number of cycles curves showed that the fatigue resistance is not affected by the “dynamically” induced martensite in annealed specimens at both temperatures. On the contrary, the previously induced “static” martensite in work hardened specimens contributes to decrease the fatigue resistance limit. The contribution of the martensite stability is discussed.

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405-410

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August 2016

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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