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Microstructure evolution of friction stir processed 2507 duplex stainless steel

  • Shikang Gao
  • , Hongyun Zhao
  • , Renxiao Zhang
  • , Chengyue Ma
  • , Li Zhou*
  • , Guo Chen
  • , Degang Li
  • , Haifeng Yang
  • , Xiaoguo Song
  • , Yunqiang Zhao*
  • *Corresponding author for this work
  • Harbin Institute of Technology
  • Harbin Institute of Technology Weihai
  • Shandong Institute of Shipbuilding Technology
  • China-Ukraine Institute of Welding, Guangdong Academy of Sciences

Research output: Contribution to journalArticlepeer-review

Abstract

Microstructure evolution of friction stir processed 2507 duplex stainless steel was investigated at rotational speed of 400 rpm and traverse speed of 100 mm/min. The microstructural evolution in processed zone was studied by optical microscopy and electron backscattered diffraction. Regions in the stir zone and the thermo-mechanically affected zone experienced different microstructure evolution due to different thermo-mechanical processes. The results showed that static recrystallization, dynamic recrystallization, and dynamic recovery occurred in the processed zone. And the ferrite was occurred the recrystallization prior to the austenite.

Original languageEnglish
Pages (from-to)2349-2358
Number of pages10
JournalWelding in the World, Le Soudage Dans Le Monde
Volume65
Issue number12
DOIs
StatePublished - Dec 2021

Keywords

  • Duplex stainless steel
  • Friction stir processing
  • Microstructure
  • Recrystallization

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