Title:
ZR-NB-BASED ALLOY MATERIAL, METHOD FOR MANUFACTURING SAID ALLOY MATERIAL, AND ZR-NB-BASED ALLOY PRODUCT
Document Type and Number:
WIPO Patent Application WO/2021/065886
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a Zr-Nb-based alloy material serving as a low-magnetic-susceptibility alloy that has high corrosion resistance while maintaining a magnetic susceptibility equal to or lower than that of conventional alloys for living bodies, a method for manufacturing the aforementioned alloy, and a Zr-Nb-based alloy product. The Zr-Nb-based alloy material according to the present invention is characterized by: having a chemical composition that includes 3-18 mass% (inclusive) of Nb, 12 mass% or less of Ti, 6 mass% or less of Cr, 6 mass% or less of Cu, and 5 mass% or less of Bi, the balance being Zr and unavoidable impurities; and being such that isothermal ω-phase particles are dispersively precipitated in β-phase crystal grains of a parent phase.
Inventors:
TAMURA SHINYA (JP)
KIMURA TOMONORI (JP)
AONO YASUHISA (JP)
KIMURA TOMONORI (JP)
AONO YASUHISA (JP)
Application Number:
PCT/JP2020/036836
Publication Date:
April 08, 2021
Filing Date:
September 29, 2020
Export Citation:
Assignee:
HITACHI METALS LTD (JP)
International Classes:
C22C16/00; C22B9/16; C22F1/00; C22F1/18
Domestic Patent References:
| WO2018047611A1 | 2018-03-15 | |||
| WO2013035269A1 | 2013-03-14 |
Foreign References:
| JP2010075413A | 2010-04-08 | |||
| JP2020084300A | 2020-06-04 | |||
| JP2006265633A | 2006-10-05 | |||
| JP2010075413A | 2010-04-08 |
Other References:
AKAHORI, TOSHIKAZU ET AL.: "Mechanical Properties and Biocompatibilities of Zr-Nb System Alloys with Different Nb Contents for Biomedical Applications", JOURNAL OF THE JAPAN INSTITUTE OF METALS AND MATERIALS, vol. 75, no. 8, 2011, pages 445 - 451, XP055815437
NOMURA, NAOYUKI ET AL.: "Effects of Phase Constitution of Zr-Nb Alloys on Their Magnetic Susceptibilities", MATERIALS TRANSACTIONS, vol. 50, no. 10, 2009, pages 2466 - 2472, XP055815444
NOMURA, NAOYUKI ET AL.: "Effects of Phase Constitution of Zr-Nb Alloys on Their Magnetic Susceptibilities", MATERIALS TRANSACTIONS, vol. 50, no. 10, 2009, pages 2466 - 2472, XP055815444
Attorney, Agent or Firm:
POLAIRE I.P.C. (JP)
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