Title:
析出硬化型銅合金及びその製造方法
Document Type and Number:
Japanese Patent JP6802689
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a manufacturing method providing a precipitation hardening type copper alloy containing no specific ally in so-called Corson-based alloy containing Ni and Si as alloy components and excellent in corrosion resistance by adding structure control, and the precipitation hardening type copper alloy.SOLUTION: There is provided a manufacturing method of a precipitation hardening type copper alloy having a component composition with, by mass%, Ni of 6.5 to 8.8%, Si of 1.5 to 2.5%, Cr of 0.3 to 1.3%, Ni/Si ratio of 3.3 to 4.8 and the balance Cu with inevitable impurities, and having hardness of 200 Hv or more by dispersing precipitate extending in a <110> direction of a Cu base phase. There is provided a manufacturing method of the precipitation hardening type copper alloy having hardness of 200 Hv or more by an aging heat treatment by quickly solidifying to have average secondary dendrite arm spacing of 20 μm and then holding a temperature in a temperature range of 400 to 500°C at least without heating to 900°C or more.SELECTED DRAWING: Figure 2
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Inventors:
Yoshihito Ogasawara
Eguchi Itsuo
Genjiro Hagino
Yasuhiro Ariga
Horiguchi Motohiro
Eguchi Itsuo
Genjiro Hagino
Yasuhiro Ariga
Horiguchi Motohiro
Application Number:
JP2016220996A
Publication Date:
December 16, 2020
Filing Date:
November 11, 2016
Export Citation:
Assignee:
Miyoshi Alloy Industry Co., Ltd.
KABUSHIKI KAISHA KOBE SEIKO SHO
KABUSHIKI KAISHA KOBE SEIKO SHO
International Classes:
C22C9/06; C22C1/02; C22F1/08; H01B1/02
Domestic Patent References:
| JP2008223069A | ||||
| JP2009235557A | ||||
| JP4247839A | ||||
| JP55158246A |
Attorney, Agent or Firm:
Patent business corporation Mutsuki Partners