Title:
ALUMINUM ALLOY FOR BRAZING AND ALUMINUM BRAZING SHEET
Document Type and Number:
WIPO Patent Application WO/2020/152911
Kind Code:
A1
Abstract:
Provided is an aluminum alloy for flux-free brazing, the aluminum alloy being used for flux-free brazing performed through an Al-Si-based brazing material in a non-oxidizing atmosphere which does not involve depressurization, and containing, in mass%, 0.01-2.0% of Mg and 0.005-1.5% of Bi. For an Mg-Bi-based compound contained in the aluminum alloy, the number of the Mg-Bi-based compound having a Heywood's diameter of at least 0.01 μm and less than 5.0 μm is greater than 10 per 10000 μm2 field of view, and the number of the Mg-Bi-based compound having a Heywood's diameter of at least 5.0 μm is less than 2 per 10000 μm2 field of view, in a cross section parallel to the rolling direction. For particles of elemental Bi contained in the aluminum alloy, the number of the particles having a Heywood's diameter of at least 5.0 μm is less than 5 per 10000 μm2 field of view in a cross section parallel to the rolling direction.
Inventors:
MORI YOSHIKI (JP)
MIYAKE HIDEYUKI (JP)
YOSHINO MICHIHIDE (JP)
IWAO SHOHEI (JP)
EDO MASAKAZU (JP)
MIYAKE HIDEYUKI (JP)
YOSHINO MICHIHIDE (JP)
IWAO SHOHEI (JP)
EDO MASAKAZU (JP)
Application Number:
PCT/JP2019/037644
Publication Date:
July 30, 2020
Filing Date:
September 25, 2019
Export Citation:
Assignee:
MITSUBISHI ALUMINIUM (JP)
International Classes:
B23K35/22; C22C21/06; B23K35/28; C22C21/00
Domestic Patent References:
| WO2018216773A1 | 2018-11-29 |
Foreign References:
| JPS645020B2 | 1989-01-27 | |||
| JP4547032B1 | 2010-09-22 | |||
| JP2014050861A | 2014-03-20 | |||
| JP2012050992A | 2012-03-15 | |||
| JP2014037576A | 2014-02-27 |
Other References:
See also references of EP 3916119A4
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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