Carbide precipitation in a low alloy ferritic steel

M. L. Saucedo-Muñoz, R. Gómez-Martínez, A. Ortiz-Mariscal, V. M. Lopez-Hirata, J. D. Villegas-Cardenas, J. L. Gonzalez-Velazquez

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

Abstract

The precipitation evolution was studied during aging of 2.25Cr-1Mo steel at 550 °C. The as-received steel was aged in two different ways: the first one was the a continuous isothermal treatment at 550 °C for times up to 1000 h and the second aging was performed using isothermal aging cycles which consisted of aging at 550 °C for 60 min and then water quenched at room temperature. M23C6 and M6C precipitation occurred intragranular and intergranular in both types of aging. The coarsening of the carbides was observed to occur with the increase in aging time. Nevertheless, the growth kinetics coarsening was faster in the case of isothermal aging cycles. The hardness decreased with aging time in both cases; however, it occurred in a shorter aging time for the cyclic aging. Nanoindentation tests indicated the increase of ductility as the aging time increased.

Original languageEnglish
Title of host publicationTMS 2017 146th Annual Meeting
PublisherSpringer International Publishing
Pages791-799
Number of pages9
ISBN (Print)9783319514925
DOIs
StatePublished - 2017
Event146th Annual Meeting and Exhibition Supplemental, TMS 2017 - San Diego, United States
Duration: 26 Feb 20172 Mar 2017

Publication series

NameMinerals, Metals and Materials Series
VolumePart F6
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696

Conference

Conference146th Annual Meeting and Exhibition Supplemental, TMS 2017
Country/TerritoryUnited States
CitySan Diego
Period26/02/172/03/17

Keywords

  • Carbide precipitation
  • Cycle aging
  • Growth kinetics
  • Hardness
  • Isothermal aging

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