Title:
HOT-PRESS MOLDED ARTICLE AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2013/137453
Kind Code:
A1
Abstract:
Provided is a hot-press molded article that can achieve a high level of balance between high strength and extension by region and has a region corresponding to an energy absorption site and a shock resistant site within a single molded article without applying a welding method by means of having first region having a metal structure containing both 80-97 area% of martensite and 3-20 area% of residual austenite, the remaining structure comprising no more than 5 area%, and a second region having a metal structure comprising 30-80 area% of ferrite, less than 30 area% (exclusive of 0 area%) of bainitic ferrite, no greater than 30 area% (exclusive of 0 area%) of martensite, and 3-20 area% of residual austenite.
Inventors:
NAITOU JUNYA
MURAKAMI TOSHIO
IKEDA SHUSHI
OKITA KEISUKE
MURAKAMI TOSHIO
IKEDA SHUSHI
OKITA KEISUKE
Application Number:
PCT/JP2013/057468
Publication Date:
September 19, 2013
Filing Date:
March 15, 2013
Export Citation:
Assignee:
KOBE STEEL LTD (JP)
International Classes:
C22C38/00; B21D22/20; C21D1/18; C21D9/00; C22C38/60
Domestic Patent References:
| WO2012169640A1 | 2012-12-13 | |||
| WO2012169639A1 | 2012-12-13 |
Foreign References:
| JP2006213959A | 2006-08-17 | |||
| JP2010527407A | 2010-08-12 | |||
| JP2012041613A | 2012-03-01 |
Other References:
See also references of EP 2826880A4
"Thermo-Mechanical Properties of Tailor Welded Blanks in Hot Sheet Metal Forming Processes", PROC. IDDRG2010, 2010
RUDIGER ERHARDT; JOHANNES BOKE: "Proc, of 1st Int. Conf. on Hot Sheet Metal Forming of High-Performance steel", 2008, STEINHOFF, K., OLDENBURG, M, STEINHOFF, AND PRAKASH, B., article "Industrial application of hot forming process simulation", pages: 83 - 88
BEGONA CASAS; DAVID LATRE; NOEMI RODRIGUEZ; ISAAC VALLS: "Tailor made tool materials for the present and upcoming tooling solutions in hot sheet metal forming", PROC, OF 1ST INT. CONF. ON HOT SHEET METAL FORMING OF HIGH-PERFORMANCE STEEL, 2008, pages 23 - 35
LESLIE: "The Physical Metallurgy of Steels", 1985, MARUZEN COMPANY, LIMITED
ISJJ INT., vol. 33, no. 7, 1933, pages 776
"Thermo-Mechanical Properties of Tailor Welded Blanks in Hot Sheet Metal Forming Processes", PROC. IDDRG2010, 2010
RUDIGER ERHARDT; JOHANNES BOKE: "Proc, of 1st Int. Conf. on Hot Sheet Metal Forming of High-Performance steel", 2008, STEINHOFF, K., OLDENBURG, M, STEINHOFF, AND PRAKASH, B., article "Industrial application of hot forming process simulation", pages: 83 - 88
BEGONA CASAS; DAVID LATRE; NOEMI RODRIGUEZ; ISAAC VALLS: "Tailor made tool materials for the present and upcoming tooling solutions in hot sheet metal forming", PROC, OF 1ST INT. CONF. ON HOT SHEET METAL FORMING OF HIGH-PERFORMANCE STEEL, 2008, pages 23 - 35
LESLIE: "The Physical Metallurgy of Steels", 1985, MARUZEN COMPANY, LIMITED
ISJJ INT., vol. 33, no. 7, 1933, pages 776
Attorney, Agent or Firm:
UEKI, Kyuichi et al. (JP)
Hisakazu Ueki (JP)
Hisakazu Ueki (JP)
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