Title:
ALLOY STRUCTURE AND METHOD FOR MANUFACTURING ALLOY STRUCTURE
Document Type and Number:
WIPO Patent Application WO/2016/013498
Kind Code:
A1
Abstract:
Provided is an alloy structure containing Fe, and at least four elements which are selected from elements of atomic number 13 to atomic number 79 included in Group 3 to Group 16 of the periodic table of the elements and for which the ratio of the atomic radius thereof to that of the Fe atom is 0.83-1.17, inclusive, in respective concentrations of 5-30 at%, inclusive, the difference in concentration of at least four elements among the Fe and the at least four elements being within a range of less than 3 at%. The host crystals are columnar crystals of Fe and the at least four elements in solid solution, and the alloy contains as unavoidable impurities no more than 0.005 wt% of P, no more than 0.040 wt% of Si, no more than 0.002 wt% of S, no more than 0.005 wt% of Sn, no more than 0.002 wt% of Sb, no more than 0.005 wt% of As, no more than 0.050 wt% of Mn, no more than 0.001 wt% of O, and no more than 0.002 wt% of N, expressed as atomic concentration ranges. The alloy structure thereby has highly uniform distributions of elemental composition and mechanical strength, and good high-temperature strength and corrosion resistance.
Inventors:
KATO TAKAHIKO (JP)
KUWABARA KOUSUKE (JP)
FUJIEDA TADASHI (JP)
AOTA KINYA (JP)
TAKAHASHI ISAMU (JP)
SATAKE HIROYUKI (JP)
YAMAGA KENJI (JP)
MURAKAMI HAJIME (JP)
KUWABARA KOUSUKE (JP)
FUJIEDA TADASHI (JP)
AOTA KINYA (JP)
TAKAHASHI ISAMU (JP)
SATAKE HIROYUKI (JP)
YAMAGA KENJI (JP)
MURAKAMI HAJIME (JP)
Application Number:
PCT/JP2015/070472
Publication Date:
January 28, 2016
Filing Date:
July 17, 2015
Export Citation:
Assignee:
HITACHI LTD (JP)
International Classes:
C22C30/00; B22F1/00; B22F3/105; B22F3/16; B33Y10/00
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 ET AL.: "The use of high-entropy alloys in additive manufacturing", SCRIPTA MATERIALIA, vol. 99, pages 93 - 96, XP055388792
See also references of EP 3173499A4
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 ET AL.: "The use of high-entropy alloys in additive manufacturing", SCRIPTA MATERIALIA, vol. 99, pages 93 - 96, XP055388792
See also references of EP 3173499A4
Attorney, Agent or Firm:
INOUE Manabu et al. (JP)
Manabu Inoue (JP)
Manabu Inoue (JP)
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