Title:
PRESS MOLDED STEEL ARTICLE
Document Type and Number:
WIPO Patent Application WO/2019/198781
Kind Code:
A1
Abstract:
A press molded steel article having a first site and a second site connected to the first site. The metal composition at the first site has a martensite volume fraction of at least 90% and the aspect ratio of the prior γ grain size at the first site is at least 1.4 times the aspect ratio for the prior γ grain size at the second site.
Inventors:
YOSHIKAWA NOBUO (JP)
TSUKANO YASUSHI (JP)
YAMAGATA MITSUHARU (JP)
TSUKANO YASUSHI (JP)
YAMAGATA MITSUHARU (JP)
Application Number:
PCT/JP2019/015735
Publication Date:
October 17, 2019
Filing Date:
April 11, 2019
Export Citation:
Assignee:
NIPPON STEEL CORP (JP)
International Classes:
F16H9/04; C21D1/18; C21D9/00; C22C38/00; C22C38/60
Domestic Patent References:
WO2012120692A1 | 2012-09-13 | |||
WO2018012603A1 | 2018-01-18 |
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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