Title:
WEAR-RESISTANT STEEL SHEET
Document Type and Number:
WIPO Patent Application WO/2022/224458
Kind Code:
A1
Abstract:
Provided is a wear-resistant steel sheet having a predetermined chemical composition, wherein: the Vickers hardness HV10 (Hv) thereof at a position 1 mm deep from the surface satisfies expression 1: HV10 ≥ 634 x √[C] + 140; crystal grains surrounded by boundaries having a misorientation of 15˚ or greater at the 1 mm deep position from the surface have an average circle equivalent diameter of 25 μm or less; and carbides at the 1 mm deep position from the surface after a heat-treatment test at 300˚C for 10 minutes have a major axis average value of 0.25 to 5.00 μm.
Inventors:
YOSHIMURA MASAHIDE (JP)
FURUYA HITOSHI (JP)
MIYAKE TAKUMI (JP)
NAKATA DAIJI (JP)
TAKAHASHI YASUNORI (JP)
FURUYA HITOSHI (JP)
MIYAKE TAKUMI (JP)
NAKATA DAIJI (JP)
TAKAHASHI YASUNORI (JP)
Application Number:
PCT/JP2021/016546
Publication Date:
October 27, 2022
Filing Date:
April 23, 2021
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
C22C38/00; C22C38/58; C21D8/02
Domestic Patent References:
| WO2019181130A1 | 2019-09-26 |
Foreign References:
| JP2017186634A | 2017-10-12 | |||
| JP2014194042A | 2014-10-09 | |||
| US20200157651A1 | 2020-05-21 | |||
| JP2005290554A | 2005-10-20 |
Attorney, Agent or Firm:
AOKI, Atsushi et al. (JP)
Download PDF: