Title:
オーステナイト系マトリックスを有するＴＷＩＰ鋼板
Document Type and Number:
Japanese Patent JP6805271
Kind Code:
B2
Abstract:
A TWIP steel sheet is provided having an austenitic matrix including by weight: 0.1≤C≤1.2%, 13.0≤Mn<25.0%, 0.1≤Si≤3.0%, 0.1≤Cu≤5.0%, S≤0.030%, P≤0.080%, N≤0.1%, 0.1≤Al≤4.0% and 0.1≤V≤2.50% in such way that:—when the amount of Al<2.0%, the weight ratio Al/V is between 0.2 and 8 or—when the amount of Al≥2.0%, the amount of V>0.25%, and on a purely optional basis, one or more of Nb≤0.5%, B≤0.005%, Cr≤1.0%, Mo≤0.40%, Ni≤1.0%, Ti≤0.5%, and/or 0.06≤Sn≤0.2%, the remainder of the composition being made of iron and inevitable impurities resulting from elaboration.
Inventors:
Scott, Colin
Remy, brandine
Remy, brandine
Application Number:
JP2018561564A
Publication Date:
December 23, 2020
Filing Date:
May 19, 2017
Export Citation:
Assignee:
ArcelorMittal
International Classes:
C22C38/00; C21D9/46; C22C18/04; C22C21/02; C22C38/12; C22C38/58
Domestic Patent References:
| JP2013544968A | ||||
| JP2008519160A | ||||
| JP2016514208A | ||||
| JP2011514436A | ||||
| JP2013534566A | ||||
| JP2016534224A |
Foreign References:
| WO2015012357A1 |
Attorney, Agent or Firm:
Kawaguchi International Patent Office