Reversible, high temperature softening of plasma-nitrided hot-working steel studied using in situ micro-pillar compression

J. P. Best; J. Wehrs; X. Maeder; J. Zechner; J. M. Wheeler; T. Schär; M. Morstein; J. Michler

Materials Science and Engineering A 680 (2017) 433-436

The high temperature mechanical behaviour of plasma-nitrided tool steel is investigated at variable temperatures using in situ micro-pillar compression. It is observed that the strengthening brought about by nitriding is steadily, but reversibly, reduced when increasing the testing temperature, until it is completely negated at 500 °C.