Title:
ALUMINUM ALLOY, SPRING MADE OF ALUMINUM ALLOY, AND FASTENING MEMBER MADE OF ALUMINUM ALLOY
Document Type and Number:
WIPO Patent Application WO/2019/124554
Kind Code:
A1
Abstract:
The aluminum alloy according to the present invention contains 1.2 to 4.0 mass% (inclusive) of copper, 4.0 to 14.0 mass% (inclusive) of zinc, 0.5 to 4.0 mass% (inclusive) of magnesium, 0.01% or less of silicon, and 0.01% or less of iron; the remainder consists of aluminum and unavoidable impurities; and the average crystal grain size of an equivalent circle is 500 nm or less.
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Inventors:
SUZUKI TAKESHI (JP)
NAKANO JYUNICHI (JP)
NAKANO JYUNICHI (JP)
Application Number:
PCT/JP2018/047360
Publication Date:
June 27, 2019
Filing Date:
December 21, 2018
Export Citation:
Assignee:
NHK SPRING CO LTD (JP)
International Classes:
C22C21/10; F16B19/04; F16B35/00; F16B37/00; F16F1/02; F16F1/06; C22F1/00; C22F1/053
Foreign References:
| JP2009035766A | 2009-02-19 | |||
| JP2001335874A | 2001-12-04 | |||
| JP2016141880A | 2016-08-08 | |||
| JPH03294445A | 1991-12-25 | |||
| JP2017133097A | 2017-08-03 | |||
| US20040065173A1 | 2004-04-08 | |||
| JPS6356365B2 | 1988-11-08 | |||
| JPS5343333B2 | 1978-11-18 |
Other References:
HORITA, Z. ET AL.: "Improvement of mechanical properties for Al alloys using equal-channel angular pressing", JOURNAL OF MATERIALS PROCESSING TECHNOLOGY, vol. 117, no. 3, 23 November 2001 (2001-11-23), pages 288 - 292, XP055621271, ISSN: 0924-0136
See also references of EP 3730639A4
See also references of EP 3730639A4
Attorney, Agent or Firm:
SAKAI INTERNATIONAL PATENT OFFICE (JP)
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