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Open AccessArticle

Influence of Friction Stir Processing on Mechanical Behavior of 2507 SDSS

1
Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
2
Center of Research Excellence in Corrosion, Research Institute, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
*
Author to whom correspondence should be addressed.
Metals 2020, 10(3), 369; https://doi.org/10.3390/met10030369
Received: 18 February 2020 / Revised: 4 March 2020 / Accepted: 10 March 2020 / Published: 12 March 2020
Duplex stainless steel (DSS) is used for desalination equipment, pressure vessels, marine applications, offshore applications, and in oil/gas plants where a highly corrosive environment is present. Super duplex stainless steel (SDSS) 2507 has excellent mechanical properties, such as high strength, high toughness, high fatigue life, and high corrosion resistance. Friction stir processing (FSP) is used to refine the grain structure of the processed region such that properties like strength, hardness, fracture toughness, fatigue life, and corrosion resistance are enhanced. In this paper, an optimized friction stir process of 2507 SDSS is carried out to refine the microstructure of the material in order to improve its mechanical properties. Microstructure analysis revealed that grains were refined from a size of around 160 µm in the base material to 2–30 µm in the processed zone. This grain size reduction resulted in improved strength, hardness, and fracture toughness of the material by up to 14%, 11%, and 12%, respectively. However, FSP has reduced the fracture strain by about 30%. View Full-Text
Keywords: friction stir processing; super duplex stainless steel; 2507 SDSS; fracture toughness friction stir processing; super duplex stainless steel; 2507 SDSS; fracture toughness
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MDPI and ACS Style

Abubaker, H.M.; Merah, N.; Al-Badour, F.A.; Albinmousa, J.; Sorour, A.A. Influence of Friction Stir Processing on Mechanical Behavior of 2507 SDSS. Metals 2020, 10, 369.

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