High strength dual phase steel with low yield ratio, high...

C - Chemistry – Metallurgy – 22 – C

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C22C 38/14 (2006.01) C21D 8/02 (2006.01) C22C 38/04 (2006.01) C22C 38/08 (2006.01) C22C 38/12 (2006.01)

Patent

CA 2627171

A dual phase, high strength steel having a composite microstructure of soft and hard phases providing a low yield ratio, high strain capacity, superior weldability, and high toughness is provided. The dual phase steel includes from, about 10% by volume to about 60% by volume of a first phase or constituent consisting essentially of fine-grained ferrite. The first phase has a ferrite mean grain size of about 5 microns or less. The dual phase steel further includes from about 40% by volume to about 90% by volume of a second phase or constituent comprising fine-grained martensite, fine-grained lower bainite, fine-grained granular bainite, fine-grained degenerate upper bainite, or any mixture thereof. Methods for making the same are also provided.

L'invention concerne un acier biphasé haute résistance pourvu d'une microstructure composite de phases douce et dure présentant un faible taux de fluage, une haute capacité d'allongement, une soudabilité supérieure et une haute ténacité. Cet acier biphasé comprend environ 10 % en volume à environ 60 % en volume d'une première phase ou d'un premier constituant essentiellement constitué(e) de ferrite à grains fins. Cette première phase présente une taille moyenne de grains de ferrite inférieure ou égale à environ 5 microns. Ledit acier biphasé comprend également environ 40 % en volume à environ 90 % en volume d'une seconde phase ou d'un second constituant constitué(e) de martensite à grains fins, de bainite inférieure à grains fins, de bainite granulaire à grains fins, de bainite supérieure dégénérée à grains fins ou n'importe quel mélange de ces dernières. Cette invention concerne également des procédés de fabrication dudit acier.

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

High strength dual phase steel with low yield ratio, high... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with High strength dual phase steel with low yield ratio, high..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High strength dual phase steel with low yield ratio, high... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2086514

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.