Influence of Sintering Temperature on Hardness and Wear Properties of TiN Nano Reinforced SAF 2205

S. R. Oke, O. O. Ige, O. E. Falodun, B. A. Obadele, M. R. Mphalele, P. A. Olubambi

Research output: Contribution to journalConference article

2 Citations (Scopus)

Abstract

Conventional duplex stainless steel degrade in wear and mechanical properties at high temperature. Attempts have been made by researchers to solve this problems leading to the dispersion of second phase particles into duplex matrix. Powder metallurgy methods have been used to fabricate dispersion strengthened steels with a challenge of obtaining fully dense composite and grain growth. This could be resolved by appropriate selection of sintering parameters especially temperature. In this research, spark plasma sintering was utilized to fabricate nanostructured duplex stainless steel grade SAF 2205 with 5 wt.% nano TiN addition at different temperatures ranging from 1000 °C to 1200 °C. The effect of sintering temperature on the microstructure, density, hardness and wear of the samples was investigated. The results showed that the densities and grain sizes of the sintered nanocomposites increased with increasing the sintering temperature. The microstructures reveal ferrite and austenite grains with fine precipitates within the ferrite grains. The study of the hardness and wear behaviors, of the samples indicated that the optimum properties were obtained for the sintering temperature of 1150 °C.

Original languageEnglish
Article number012030
JournalIOP Conference Series: Materials Science and Engineering
Volume272
Issue number1
DOIs
Publication statusPublished - Dec 21 2017
Externally publishedYes
Event2017 4th International Conference on Mechanical, Materials and Manufacturing, ICMMM 2017 - Atlanta, United States
Duration: Oct 25 2017Oct 27 2017

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Engineering(all)

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