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Title:
HOT PRESS-FORMED MEMBER
Document Type and Number:
WIPO Patent Application WO/2018/033960
Kind Code:
A1
Abstract:
The hot press-formed member according to an embodiment of the present invention has a specific chemical composition. The microstructure in the section at 1/4 of the sheet thickness comprises, in unit volume%, tempered martensite: 20-90%, bainite: 5-75%, and retained austenite: 5-25%, with ferrite being limited to 10% or less. The {211} <011> orientation pole density in the section at 1/4 of the sheet thickness is at least 3.0.

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Inventors:
SAKAKIBARA MUTSUMI (JP)
SUGIURA NATSUKO (JP)
HAYASHI KUNIO (JP)
KAWASAKI KAORU (JP)
Application Number:
PCT/JP2016/073896
Publication Date:
February 22, 2018
Filing Date:
August 16, 2016
Export Citation:
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Assignee:
NIPPON STEEL & SUMITOMO METAL CORP (JP)
International Classes:
C22C38/00; B21D22/20; C21D1/18; C21D9/00; C21D9/46; C22C38/60
Domestic Patent References:
WO2012133540A12012-10-04
WO2013125399A12013-08-29
Foreign References:
JP2016028172A2016-02-25
JP2016008310A2016-01-18
JP2015151600A2015-08-24
JP2014037595A2014-02-27
JP2012233229A2012-11-29
JP2011214081A2011-10-27
JP2011214072A2011-10-27
JP2011214070A2011-10-27
JP2007046146A2007-02-22
Other References:
See also references of EP 3502291A4
Attorney, Agent or Firm:
SHIGA Masatake et al. (JP)
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