Nano-precipitates design with hydrogen trapping character in high strength steels

Fu Gao Wei, Toru Hara, Kaneaki Tsuzaki

Research output: Chapter in Book/Report/Conference proceedingConference contribution

37 Citations (Scopus)

Abstract

Nano-precipitates of alloy carbides TiC, NbC and VC in tempered martensite have been characterized by means of high-resolution transmission electron microscope (HRTEM) and correlated to the hydrogen trapping property. The examination of whether the amount of hydrogen absorbed by the TiC particles depends on their surface area or volume indicate that the coherent and semi-coherent TiC particles trap hydrogen at the precipitate/matrix interface at ambient temperature while the incoherent TiC particles trap hydrogen inside themselves only at high temperatures. Coherent and semi-coherent NbC and VC particles also demonstrate a surface area dependence of hydrogen trapping capacity with NbC > TiC >> VC. Contrary to TiC, incoherent NbC and VC particles are unable to trap hydrogen.

Original languageEnglish
Title of host publicationProceedings of the 2008 International Hydrogen Conference - Effects of Hydrogen on Materials
Pages448-455
Number of pages8
Publication statusPublished - Dec 1 2009
Externally publishedYes
Event2008 International Hydrogen Conference - Effects of Hydrogen on Materials - Jackson, WY, United States
Duration: Sep 7 2008Sep 10 2008

Other

Other2008 International Hydrogen Conference - Effects of Hydrogen on Materials
Country/TerritoryUnited States
CityJackson, WY
Period9/7/089/10/08

All Science Journal Classification (ASJC) codes

  • Materials Chemistry
  • Nuclear and High Energy Physics
  • Atomic and Molecular Physics, and Optics

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