Nitrogen diffusion hardening of austenitic stainless steels

Ozgur Celik*, Huseyin Cimenoglu, Eyup Sabri Kayali

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

This study aims to nitride AISI304L, 316L, 316Ti austenitic stainless steels in a fluidized bed by passing "60% ammonia + 40% nitrogen" gas mixtures through aluminum oxide particles at 420°C. Nitriding for 4h developed about 5 um thick diffusion layer on the surface of all samples without chromium nitride precipitation. Glow discharge optical spectrometry studies revealed carbon accumulation beyond the nitrogen rich layer. The hardness of the outer most layer of nitrided samples were measured more than 1500 HV, which accompanied by a significant increase in wear resistance (more than 5 times with respect to the as-received state) without sacrificing the corrosion resistance. Among the examined stainless steels excellent combination of corrosion and wear resistances was obtained from 316Ti austenitic stainless steel.

Original languageEnglish
Title of host publicationGeneral Abstracts
Subtitle of host publicationStructural Materials Division 2007 - Proceedings of Symposium held during the 2007 TMS Annual Meeting
Pages1-7
Number of pages7
Publication statusPublished - 2007
Event136th TMS Annual Meeting, 2007 - Orlando, FL, United States
Duration: 25 Feb 20071 Mar 2007

Publication series

NameTMS Annual Meeting

Conference

Conference136th TMS Annual Meeting, 2007
Country/TerritoryUnited States
CityOrlando, FL
Period25/02/071/03/07

Keywords

  • Austenitic stainless steel
  • Corrosion
  • Nitriding
  • Surface hardening
  • Wear

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