Dear Colleagues,

Duplex stainless steels (DSSs) were developed in the 1930s, and gradually found an increasing number applications thanks to their high strength, good weldability, good toughness and resistance to stress corrosion cracking. Although the use of DSSs is well-established in many industrial sectors (e.g., oil and gas), the research and innovations in the field are always growing. In particular, the recent research has focused on the development of new high-grade DSSs (the so-called hyper-duplex steels) and on the production of components through technologies based on the additive manufacturing (AM) concept, mainly laser-based ones.

In all cases, a strong correlation between the microstructural characterization and the investigated properties was the key point of the performed research.

The purpose of this Special Issue is to correlate the microstructure of DSSs with their mechanical and corrosion properties, with special attention to novel DSS grades or novel production technologies such as AM.

I invite you to submit both original contributions and review works on this topic, with papers that deal both with the characterization and with the mechanical and corrosion resistance evaluation of different DSS grades.

Dr. Irene Calliari
Dr. Luca Pezzato
Guest Editors

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• stainless steel
• microstructure
• mechanical properties
• corrosion resistance
• austenite
• ferrite
• metals characterization