Improvement of strength-ductility combination by reactively layer-integrated steels
- Improvement of strength-ductility combination by reactively layer-integrated steels
- Date Issued
- Martensite-base steels can be a promising candidates for 3rd generation
AHSS if the improvement of elongation is achieved. Until now, the improvement of
ductility with AHSS has been carried out mainly by alloy design and microstructure
control. However, these attempts can be approached to the limit and we certainly
need alternative methods. One of the possible ways will be the introduction of the
laminated structure steels. At the center, very high strength steel is located, for
example martensite phase and around this part, for increasing the elongation, very
ductile component is used, for example alpha phase of steel or austenitic stainless
steel. Thus if we control the microstructure and the layer ratio between these two
phases, we can get the both the high strength and elongation.
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