Abstract

Elastic constants of an Fe21Cr6Ni9Mn stainless steel were studied experimentally by both pulse and resonance methods. The room-temperature elastic constants are similar to those of AISI 304. During cooling to liquid-nitrogen temperature (76 K), all the elastic constants behave anomalously below 130 K. As in FeMn alloys, these anomalies are probably due to a Néel transition. A further anomaly in the compressibility at 190 K suggests a second transition of unknown nature.

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