Title:
ALLOY STRUCTURE AND METHOD FOR PRODUCING ALLOY STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2016/013497
Kind Code:
A1
Abstract:
Provided is an alloy structure that has high uniformity with respect to the elemental composition and the mechanical strength distribution thereof, that has good high-temperature strength and corrosion resistance, and that has a discretionary shape and size. The alloy structure contains each of the following at an atomic concentration within the range of 5-30 at%: four or more elements selected from the group consisting of elements that have an atomic number of 13 to 79 and that are included in the third to sixteenth groups of the periodic table, said four or more elements having an atomic radius ratio of 0.83 to 1.17 with respect to an Fe atom; and Fe. In addition, among the four or more elements and the Fe, the difference between the atomic concentrations of the four or more elements is less than 3 at%, and the main crystal of the alloy structure is a columnar crystal in which the four or more elements and Fe form a solid solution.
Inventors:
KATO TAKAHIKO (JP)
KUWABARA KOUSUKE (JP)
FUJIEDA TADASHI (JP)
AOTA KINYA (JP)
TAKAHASHI ISAMU (JP)
YAMAGA KENJI (JP)
SATAKE HIROYUKI (JP)
MURAKAMI HAJIME (JP)
KUWABARA KOUSUKE (JP)
FUJIEDA TADASHI (JP)
AOTA KINYA (JP)
TAKAHASHI ISAMU (JP)
YAMAGA KENJI (JP)
SATAKE HIROYUKI (JP)
MURAKAMI HAJIME (JP)
Application Number:
PCT/JP2015/070471
Publication Date:
January 28, 2016
Filing Date:
July 17, 2015
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
C22C30/00; B22F1/052; B22F3/105; B22F3/16; B33Y10/00; B33Y80/00
Foreign References:
| CN102220026A | 2011-10-19 | |||
| CN103056352A | 2013-04-24 | |||
| US20130323116A1 | 2013-12-05 | |||
| JP2014105373A | 2014-06-09 | |||
| JP2002173732A | 2002-06-21 | |||
| JP2004124201A | 2004-04-22 |
Other References:
WANG, F. J. ET AL.: "Cooling Rate and Size Effect on the Microstructure and Mechanical Properties of AlCoCrFeNi High Entropy Alloy", JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY, vol. 131, no. 3, July 2009 (2009-07-01), pages 034501.1 - 034501.3, XP008185130
KUNCE, I. ET AL.: "Structure and hydrogen storage properties of a high entropy ZrTiVCrFeNi alloy synthesized using Laser Engineered Net Shaoing(LENS", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 38, no. 27, pages 12180 - 12189, XP028694419
BRIF, YEVGENI: "The use of high-entropy alloys in additive manufacturing", SCRIPTA MATERIALIA, vol. 99, pages 93 - 96, XP055388792
See also references of EP 3173498A4
KUNCE, I. ET AL.: "Structure and hydrogen storage properties of a high entropy ZrTiVCrFeNi alloy synthesized using Laser Engineered Net Shaoing(LENS", INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, vol. 38, no. 27, pages 12180 - 12189, XP028694419
BRIF, YEVGENI: "The use of high-entropy alloys in additive manufacturing", SCRIPTA MATERIALIA, vol. 99, pages 93 - 96, XP055388792
See also references of EP 3173498A4
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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