Title:
STEEL FOR SOLID-STATE WELDING, STEEL MATERIAL FOR SOLID-STATE WELDING, SOLID-STATE WELDED JOINT, AND SOLID-STATE WELDED STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2021/187473
Kind Code:
A1
Abstract:
The present invention provides steel for solid-state welding and a steel material for solid-state welding that are steel for which the tensile properties of the parent material and a joint obtained by solid-state welding are equivalent or superior to those of high tensile strength steel, and to which minimal amounts of only relatively inexpensive alloy elements have been added, wherein softening of a heat-affected part is suppressed by the addition of the minimal amounts of the alloy elements. The present invention also provides: a solid-state welded joint that is formed from steel for solid-state welding to which minimal amounts of only relatively inexpensive alloy elements have been added, wherein the tensile properties of the parent material and the joint are equivalent or superior to those of high tensile strength steel; and a solid-state welded structure including said joint. Steel for solid-state welding according to the present invention is characterized in that, in terms of mass%, the steel composition thereof contains C: 0.20-2.14%, Si and Al combined: 1.00-3.00%, Mn: 2.00-5.00%, and at least one substance from among V: more than 0.1% but not more than 3.0%, W: more than 1.0% but not more than 6.0%, and Mo: more than 1.0% but not more than 6.0%, with the remainder being only Fe and unavoidable impurities.
Inventors:
FUJII HIDETOSHI (JP)
USHIODA KOHSAKU (JP)
NAGIRA TOMOYA (JP)
MORISADA YOSHIAKI (JP)
USHIODA KOHSAKU (JP)
NAGIRA TOMOYA (JP)
MORISADA YOSHIAKI (JP)
Application Number:
PCT/JP2021/010577
Publication Date:
September 23, 2021
Filing Date:
March 16, 2021
Export Citation:
Assignee:
UNIV OSAKA (JP)
International Classes:
C22C38/00; B23K20/12; C22C37/10; C22C38/12
Domestic Patent References:
| WO2020184123A1 | 2020-09-17 | |||
| WO2020184124A1 | 2020-09-17 |
Foreign References:
| JP2012509178A | 2012-04-19 | |||
| JP2009161165A | 2009-07-23 | |||
| JP2014162971A | 2014-09-08 | |||
| JPH03199307A | 1991-08-30 |
Attorney, Agent or Firm:
IPR CONSULTANT PPC (JP)
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