Characteristics of Flakes Stacked Cr2N with Many Domains in Super Duplex Stainless Steel
Department of Mechanical and Mechatronic Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan
Department of Materials Science and Engineering, National Taiwan University, Taipei 10617, Taiwan
Department of Marine Engineering, National Taiwan Ocean University, Keelung 20224, Taiwan
Taiwan Instrument Research Institute, National Applied Research Laboratories, Hsinchu 30076, Taiwan
Author to whom correspondence should be addressed.
Crystals 2020, 10(11), 965; https://doi.org/10.3390/cryst10110965
Received: 26 September 2020 / Revised: 17 October 2020 / Accepted: 22 October 2020 / Published: 24 October 2020
(This article belongs to the Special Issue Investigation of Duplex Stainless Steel)
This study mainly observed the Cr2N (chromium nitride) nucleation and growth in SAF 2507 duplex stainless steel. However, the investigation revealed that Cr2N has a complex substructure separated into many regions. In SAF 2507 duplex stainless steel, Cr2N nucleated at the dislocations and the precipitates were composed of many Cr2N flakes gathered together when aged at 600 °C.