公开(公告)号：US20220170142A1

公开(公告)日：2022-06-02

申请号：US17437204

申请日：2020-05-21

Applicant: UACJ Corporation

Inventor： Tomohito KUROSAKI ,  Hiroki TANAKA ,  Kotaro KITAWAKI

IPC: C22F1/04 ,  C22C21/00

Abstract: An aluminum-alloy material (1) has an Al matrix and second-phase particles dispersed in the Al matrix, wherein the value of a metallographic-structure factor F indicated in Equation (1) below is 0.005 or more. F=A·ρ·L·exp(B·E)  (1) Therein, in the above-mentioned Equation (1), L is the total [μm/μm2] of the perimeters of the second-phase particles, from among the second-phase particles present in an arbitrary cross section, whose circle-equivalent diameters are 0.2 μm or more, ρ is the dislocation density [μm−2], E is the electrical conductivity [% IACS] at 25° C., A and B are correction coefficients determined in accordance with the chemical composition of the aluminum-alloy material, 0.2×10−15≤A≤20×10−15, and 0.1≤B≤1.0.

公开(公告)号：US20190153576A1

公开(公告)日：2019-05-23

申请号：US16178532

申请日：2018-11-01

Applicant: UACJ Corporation

Inventor： Tomohito KUROSAKI

IPC: C22F1/043 ,  C22C21/04

Abstract: To provide an aluminum alloy material having a heat-joining function in monolayer, in which a decrease in deformation resistance caused by working before brazing is suppressed. The present invention is an aluminum alloy material including Si: 1.5 mass % to 5.0 mass %, Mn: 0.05 mass % to 2.0 mass %, Fe: 0.01 mass % to 2.0 mass %, and balance: Al and inevitable impurities and having a heat-joining function in monolayer. The aluminum alloy material has a fibrous structure, the number density of second phase particles including an Si-based compound or an AlMnFeSi-based compound and having an equivalent circle diameter of 5.0 μm to 10.0 μm is 1,000/mm2 or less, the work hardening exponent n between two points from a nominal strain that is 0.9 times the nominal strain at maximum load to the nominal strain at maximum load is 0.03 or more, and the local elongation is 1% or more.

公开(公告)号：US20170137919A1

公开(公告)日：2017-05-18

申请号：US15411739

申请日：2017-01-20

Applicant: UACJ CORPORATION

Inventor： Akio NIIKURA ,  Kazuko FUJITA ,  Takashi MURASE ,  Yoshiyuki OYA ,  Tomohito KUROSAKI

IPC: C22C21/02 ,  F28F21/08 ,  B23K20/233 ,  F28F1/12

CPC classification number: C22C21/02 ,  B23K20/14 ,  B23K20/2333 ,  B23K2101/14 ,  B23K2103/10 ,  B32B15/016 ,  B32B15/017 ,  C22C1/02 ,  C22C21/00 ,  C22C21/04 ,  C22C21/10 ,  C22C21/14 ,  C22C21/18 ,  C22F1/00 ,  C22F1/04 ,  C22F1/043 ,  C22F1/057 ,  F28F1/022 ,  F28F1/126 ,  F28F21/084 ,  F28F2215/00 ,  F28F2275/04 ,  Y10T428/12764

Abstract: Aluminum alloy material containing Si: 1.0 to 5.0 mass % and Fe: 0.01 to 2.0 mass % with balance being Al and inevitable impurities, wherein 250 pcs/mm2 or more to 7×105 pcs/mm2 or less of Si-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 μm are present in a cross-section of the aluminum alloy material, while 100 pcs/mm2 or more to 7×105 pcs/mm2 or less of Al-based intermetallic compound particles having equivalent circle diameters of 0.5 to 5 μm are present in a cross-section of the aluminum alloy material. An aluminum alloy structure is manufactured by bonding two or more members in vacuum or a non-oxidizing atmosphere at temperature at which a ratio of a mass of a liquid phase generated in the aluminum alloy material to a total mass of the aluminum alloy material is 5% or more and 35% or less.

公开(公告)号：US20190162492A1

公开(公告)日：2019-05-30

申请号：US16091776

申请日：2017-04-12

Applicant: UACJ Corporation

Inventor： Tomohito KUROSAKI ,  Junji NINOMIYA ,  Yoshihiko MIZUTA ,  Ryoko FUJIMURA

IPC: F28F21/08 ,  F28F19/00

Abstract: An aluminum alloy fin material includes an aluminum alloy containing 1.50 to 5.00 mass % Si with the balance of Al and inevitable impurities, and has the function of being bonded by heating with a single layer. Assuming that in a cross section along the thickness direction of the fin material, the equivalent circle diameter of a Si particle is represented by D, a distance from a surface layer to the center of the Si particle is represented by L, the thickness of the fin material is represented by t, and a length parallel to the surface layer is represented by W, all Si particles that are present in the range of the length W and satisfy D≥L and L+D>0.04 t also satisfy 0≤ΣπD2

公开(公告)号：US20160116234A1

公开(公告)日：2016-04-28

申请号：US14895204

申请日：2014-06-02

Applicant: UACJ Corporation

Inventor： Takashi MURASE ,  Kotaro KITAWAKI ,  Tomohito KUROSAKI ,  Junji NINOMIYA

IPC: F28F21/08 ,  F28F1/10

CPC classification number: F28F21/084 ,  B22D11/003 ,  B22D11/0622 ,  C22C21/00 ,  C22C21/02 ,  C22F1/043 ,  F28F1/10 ,  F28F1/12 ,  F28F19/06

Abstract: There is provided a heat exchanger and a fin material for the heat exchanger that can suppress occurrence of hollow corrosion in a fin and hold cooling performance for a long period of time under a high corrosion environment. The heat exchanger includes an aluminum tube through which a working fluid circulates and an aluminum fin which is bonded to the tube. The fin has a region B around a grain boundary, and a region A around the region B. In the region B, 5.0×104 pieces/mm2 less of Al—Fe—Mn—Si based intermetallic compound, each of which has equivalent circle diameters of 0.1 to 2.5 μm, are present. In the region A, 5.0×104 pieces/mm2 to 1.0×10′ pieces/mm2 of Al—Fe—Mn—Si based intermetallic compound, each of which has equivalent circle diameters of 0.1 to 2.5 μm, are present.

Abstract translation: 提供了用于热交换器的热交换器和翅片材料，其可以在高腐蚀环境下长时间地抑制翅片中的中空腐蚀的发生并保持冷却性能。 热交换器包括工作流体循环的铝管和结合到管的铝翅片。 翅片具有围绕晶界的区域B和区域B周围的区域A.在区域B中，Al x Fe-Mn-Si系金属间化合物的5.0×104个/ mm 2以下具有相同的圆 存在0.1〜2.5μm的直径。 在区域A中，存在Al x Fe-Mn-Si系金属间化合物的5.0×10 4个/ mm 2〜1.0×10 6个/ mm 2，各自具有0.1〜2.5μm的当量圆直径。