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Improvement of strength-ductility combination by reactively layer-integrated steels

Title
Improvement of strength-ductility combination by reactively layer-integrated steels
Authors
이원희
Date Issued
2011
Publisher
포항공과대학교
Abstract
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.
URI
http://postech.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000000899131
http://oasis.postech.ac.kr/handle/2014.oak/1065
Article Type
Thesis
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