Influence of Solution Heat Treatment on Microstructure and Mechanical Properties of a Hot-Rolled 2205 Duplex Stainless Steel

Oluwasegun Eso Falodun, Edwin Bonginkosi Mtsweni, Samuel Ranti Oke, Peter Apata Olubambi

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

In this present work, the influence of solution heat treatment on microstructure, mechanical and wear properties of a hot-rolled 2205 duplex stainless steel (DSS) was investigated. The DSS samples were subjected to solution heat treatment at different temperature of 1000, 1040, 1080 and 1150 °C, held for 30 min and quenched in water. The microstructure and phase evolution of the as-received and solution heat-treated samples were analyzed using the optical microscope, scanning electron microscope, and x-ray diffraction. Tensile and wear properties were also studied. The result shows that the DSS has characteristic lamellae microstructure consisting of alternating bands of ferrite (δ) and elongated austenite (γ) with intermetallic precipitates nucleated around the ferrite region. The as-received samples have a higher hardness, tensile strength, yield strength and exhibit a high wear resistance compared to the solution heat-treated samples. The worn surface morphology revealed a mixed-mode of adhesive and abrasive wear mechanisms.

Original languageEnglish
Pages (from-to)7185-7194
Number of pages10
JournalJournal of Materials Engineering and Performance
Volume30
Issue number10
DOIs
Publication statusPublished - Oct 2021

Keywords

  • duplex stainless steel
  • mechanical properties
  • microstructure
  • solution heat treatment
  • wear behavior

ASJC Scopus subject areas

  • General Materials Science
  • Mechanics of Materials
  • Mechanical Engineering

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