Title:
PRODUCTION METHOD OF ALLOY POWDER
Document Type and Number:
Japanese Patent JP2016029195
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a production method of an alloy powder from which an alloy structure can be manufactured that is in any shapes and dimensions and has high uniformity in the elemental composition and the distribution of mechanical strength and favorable high-temperature strength and corrosion resistance.SOLUTION: The production method of an alloy powder includes: a melting step of melting a raw metal ingot to prepare a molten metal; a peroxidation step of blowing oxygen gas into the molten metal to form a slag; a separation step of separating the slag floating on the liquid surface of the molten metal from the molten metal; a degassing step of degassing the molten metal by blowing argon gas into the molten metal separated from the slag; a casting step of casting the degassed molten metal to mold a cast alloy; a step of melting the cast alloy in vacuum to obtain a molten alloy; and a pulverization step of allowing the molten alloy to flow downward and blowing inert gas to the flowing molten alloy to form an alloy powder.SELECTED DRAWING: None
Inventors:
KATO TAKAHIKO
KUWABARA KOSUKE
FUJIEDA TADASHI
AOTA KINYA
TAKAHASHI ISAMU
SATAKE HIROYUKI
YAMAGA MASASHI
MURAKAMI HAJIME
KUWABARA KOSUKE
FUJIEDA TADASHI
AOTA KINYA
TAKAHASHI ISAMU
SATAKE HIROYUKI
YAMAGA MASASHI
MURAKAMI HAJIME
Application Number:
JP2014151341A
Publication Date:
March 03, 2016
Filing Date:
July 25, 2014
Export Citation:
Assignee:
HITACHI LTD
International Classes:
B22F9/08; B22F3/105; B22F3/16; C22C30/00
Domestic Patent References:
| JP2002173732A | 2002-06-21 | |||
| JP2003293024A | 2003-10-15 | |||
| JPH10204549A | 1998-08-04 | |||
| JP2014019886A | 2014-02-03 | |||
| JP2001192709A | 2001-07-17 | |||
| JP2014105373A | 2014-06-09 | |||
| JP2009074173A | 2009-04-09 |
Foreign References:
| WO2009069684A1 | 2009-06-04 | |||
| CN103056352A | 2013-04-24 | |||
| US20130323116A1 | 2013-12-05 |
Other References:
F. J. WANG, Y. ZHANG, G. L. CHEN AND H. A. DAVIES: "Cooling Rate and Size Effect on the Microstructure and Mechanical Properties of AlCoCrFeNi High Entropy Alloy", TRANSACTIONS OF THE ASME. JOURNAL OF ENGINEERING MATERIALS AND TECHNOLOGY., NEW YORK, NY., vol. 131, no. 3, 1 July 2009 (2009-07-01), pages 034501.1 - 034501.3, XP008185130, ISSN: 0094-4289, DOI: 10.1115/1.3120387
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki
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