4.5 Article

Extraordinary ductility in Al-bearing δ-TRIP steel

Publisher

ROYAL SOC
DOI: 10.1098/rspa.2010.0127

Keywords

metallurgy; steel; phase transformations

Funding

  1. POSCO
  2. National Research Foundation of Korea, Ministry of Education, Science and Technology [R32-2008-000-10147-0]
  3. National Research Foundation of Korea [R32-2011-000-10147-0] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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An iron-based alloy system has been developed that exhibits impressive combinations of tensile strength and elongation that are not available with current steels used in the manufacture of automobiles. Furthermore, the heat treatments required to achieve these properties are consistent with practical production processes. The alloys rely on significant concentrations of ferrite-stabilizing solutes so that delta-ferrite which forms during solidification is retained in the microstructure.

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