2013年4月9日 · The microstructure of duplex stainless steels is biphasic and consists of ferritic and austenitic components, both presented in approximately equal proportions in the material. The cast microstructure of duplex steels shows the …

2021年9月1日 · Duplex stainless steel (DSS) is composed of ferrite (α) and austenite (γ) and exhibits a combination of good mechanical and corrosion properties. DSS components with complex shape (e.g., impeller blades) are widely used in …

Recently, a new grade of duplex stainless steel, UNS S82551 (25Cr-5Ni-1Mo-2.5Cu-0.18N), has been developed to overcome the drawbacks in super martensitic stainless steel, conventional 22Cr...

Literature describing the microstructure of austenitic-ferritic stainless steels is reviewed, including phases which can be deleterious, such as σ and ά.

2023年1月1日 · This study explored the microstructure evolution of 2205 duplex stainless steel (DSS) and further probed its effects on microhardness and corrosion performance. The results show that the dislocation multiplication, strain-induced martensite generation and grain refinement resulted from pre-stain increase the microhardness of DSS.

2022年2月17日 · Duplex stainless steels (DSSs) are designed to synergistically combine the superior properties of ferrite and austenite to achieve advanced mechanical and corrosion properties [1]. These steels solidify initially as δ-ferrite, which partially transforms to austenite upon cooling to temperatures lower than ∼1370 °C.

2024年5月3日 · The effect of permanent magnet stirring (PMS) on the as-cast microstructure of duplex stainless steel was investigated. It is found that high-speed PMS induces turbulent flow, leading to ferrite refinement and the emergence of numerous substructures, further fostering austenite formation.

2019年3月19日 · DSSs are characterized by their microstructure, which contains both delta ferrite and austenite phases with approximately equal volume fractions, and an unusual combination of mechanical strength, toughness, and corrosion resistance [1].

1998年4月1日 · The first three chapters cover developments, grades and specifications, alloy design and microstructure. Chapter 4 looks at forming and machining and Chapter 5 the physical and mechanical properties of duplex stainless steels.

2016年11月16日 · In this paper, a designed lean duplex stainless steel 2101, with the alloy design of reduced nickel content and increased additions of manganese and nitrogen, is studied by being partly compared with typical ASS 304L steels. The microstructure, mechanical properties, impact toughness, corrosion resistance and weldability of the designed DSS ...