publication . Article . 2011

In-situ neutron diffraction study on work-hardening behavior in a ferrite-martensite dual phase steel

Morooka, Satoshi; Sato, Naoko; Ojima, Mayumi; Harjo, Stefanus; Adachi, Yoshitaka; Tomota, Yo; Umezawa, Osamu;
Open Access English
  • Published: 18 May 2011 Journal: 学術講演会前刷集, volume 19, issue 11, pages 9-14 (issn: 0919-1364, Copyright policy)
  • Publisher: 自動車技術会
Strength and work-hardening in steels have been discussed from the viewpoint of heterogeneous deformation. In-situ neutron diffraction techniques made clear that the misfit strains between grains accompanied with the grain-scaled internal stress (intergranular stress). In the dual phase steel, the intergranular stress was superposed on phase stress. Both long-range internal stress and short-range one like forest dislocation hardening may cause the resistance for dislocation motion in the steels.
free text keywords: materials, high-strength steel sheet, test/evaluation / Neutron diffraction, elastic strain analysis [D3]
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Article . 2011
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