Microstructure and properties in friction stir weld of 12Cr steel

P. Hua, S. Moronov, C. Z. Nie, Y. S. Sato, H. Kokawa, S. H.C. Park, S. Hirano

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


Friction stir welding was employed for joining of 12Cr heat resistant ferritic steel. Microstructure and mechanical properties in the obtained welds were examined and their relationship was established. The stir zone microstructure was found to consist of quenched martensite with numerous fine dispersoids uniformly distributed in grain interiors. The formation of this microstructure remarkably strengthened the stir zone. Tempering for 3·6 ks at 923 K reduced the as welded hardness of friction stir weld to nearly base material level.

Original languageEnglish
Pages (from-to)76-81
Number of pages6
JournalScience and Technology of Welding and Joining
Issue number1
Publication statusPublished - 2014 Jan


  • 12Cr heat resistant ferritic steel
  • Friction stir welding
  • Martensite
  • Microstructure properties relationship


Dive into the research topics of 'Microstructure and properties in friction stir weld of 12Cr steel'. Together they form a unique fingerprint.

Cite this