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    • 2. 发明申请
    • MAGNESIUM ALLOY MEMBER
    • 镁合金会员
    • US20110318603A1
    • 2011-12-29
    • US13203871
    • 2010-03-03
    • Nobuyuki OkudaMasatada NumanoNozomu KawabeTakahiko KitamuraYukihiro Oishi
    • Nobuyuki OkudaMasatada NumanoNozomu KawabeTakahiko KitamuraYukihiro Oishi
    • B21D39/00B32B15/00
    • C22C23/02C22F1/06Y10T428/12535Y10T428/12736
    • A magnesium alloy structural member includes a base material composed of a magnesium alloy having an aluminum content of 4.5% by mass to 11% by mass, in which the base material has a pair of first and second surfaces, the first surface and the second surface being opposite each other, in which when a distance between the first surface and the second surface is defined as a thickness and when surface area regions are defined as regions extending from the first and second surfaces to positions 20 μm from the respective first and second surfaces in the thickness direction, in at least both the surface area regions, 10 or more fine precipitates are present in any 20 μm×20 μm subregion of each of the surface area regions, each of the fine precipitates containing both Mg and Al and having a greatest dimension of 0.5 μm to 3 μm. Because at least each of the surface area regions is composed of a microscopic texture in which fine precipitates are dispersed, the magnesium alloy structural member has excellent corrosion resistance without anticorrosion treatment and can be used for housings and so forth.
    • 镁合金结构件包括由铝含量为4.5质量%至11质量%的镁合金构成的基材,其中基材具有一对第一表面和第二表面,第一表面和第二表面 彼此相对,其中当第一表面和第二表面之间的距离被定义为厚度时,并且当表面积区域被定义为从第一表面和第二表面延伸到从相应的第一和第二表面到位置20μm的区域时 在厚度方向上,在至少两个表面积区域中,在每个表面积区域的任何20μm×20μm的子区域中存在10个以上的微细析出物,每个微细析出物均含有Mg和Al,并且具有 最大尺寸为0.5μm至3μm。 由于表面积区域中的至少每一个都由微细沉淀物分散的微观组织构成,所以镁合金结构构件在没有防腐蚀处理的情况下具有优异的耐腐蚀性,并且可以用于外壳等。
    • 5. 发明申请
    • FORMED PRODUCT OF MAGNESIUM ALLOY AND MAGNESIUM ALLOY SHEET
    • 镁合金和镁合金板的成型产品
    • US20110203706A1
    • 2011-08-25
    • US13125023
    • 2009-09-29
    • Yukihiro OishiNozomu KawabeNobuyuki OkudaNobuyuki MoriMasatada NumanoKoji MoriTakahiko KitamuraRyuichi Inoue
    • Yukihiro OishiNozomu KawabeNobuyuki OkudaNobuyuki MoriMasatada NumanoKoji MoriTakahiko KitamuraRyuichi Inoue
    • C22C23/02
    • C22C23/02C22F1/06
    • A formed product of a magnesium alloy having excellent impact resistance and a magnesium alloy sheet suitable as a material for the formed product are provided. The formed product is produced by press-forming a magnesium alloy sheet having an Al content of 7% by mass to 12% by mass and has a flat portion that is not subjected to drawing deformation. In a metal texture in a cross section of the flat portion in the thickness direction, the number of coarse intermetallic compound (Mg17Al12) particles having a particle size of 5 μm or more present in a surface area region extending from a surface of the flat portion to a position one-third of the thickness from the surface in the thickness direction is five or less. The formed product has a texture in which the number of coarse precipitations d1 is small and in which fine precipitations d0 are dispersed. The formed product is less likely to be dented even when impacted because of dispersion strengthening owing to the fine precipitations and solid-solution strengthening owing to Al that sufficiently forms a solid solution.
    • 提供了具有优异抗冲击性的镁合金的成型产品和适合成型产品的材料的镁合金板。 形成的产品通过压制形成Al含量为7质量%至12质量%的镁合金板而制成,并具有不受拉伸变形的平坦部分。 在平坦部分的厚度方向的横截面中的金属结构中,存在于从平坦部分的表面延伸的表面区域中具有5μm以上的粒子的粗大的金属间化合物(Mg17Al12)颗粒的数量 到厚度方向上的表面厚度的三分之一的位置为五分之一以下。 形成的产品具有其中粗沉淀物d1的数量少并且其中分散有细小沉淀物d0的织构。 即使由于由于充分形成固溶体的Al的细小沉淀和固溶强化而引起的分散强化,即使被冲击也难以形成凹陷。
    • 8. 发明申请
    • MAGNESIUM ALLOY SHEET MATERIAL
    • 镁合金材料
    • US20110003139A1
    • 2011-01-06
    • US12864419
    • 2009-01-14
    • Masatada NumanoNozomu KawabeYukihiro OishiNobuyuki MoriNobuyuki OkudaRyuichi Inoue
    • Masatada NumanoNozomu KawabeYukihiro OishiNobuyuki MoriNobuyuki OkudaRyuichi Inoue
    • B32B15/02B32B5/16
    • C22F1/06B22D11/007B22D19/04B22D21/007C22C23/02C22C32/0063Y10T428/25
    • The invention offers a magnesium alloy sheet material having excellent plastic processibility and rigidity and a magnesium alloy formed body having excellent rigidity. The sheet material has magnesium alloy that forms the matrix containing hard particles. The region from the surface of the sheet material to a position away from the surface by 40% of the thickness of the sheet material is defined as the surface region, and the remaining region as the center region. Hard particles existing in the center region have a maximum diameter of more than 20 μm and less than 50 μm, and hard particles existing in the surface region have a maximum diameter of 20 μm or less. Because the hard particles existing at the surface side are fine particles, they are less likely to become the starting point of cracking or another defect at the time of plastic processing. Because the hard particles existing in the center region are coarse, they can increase the rigidity of the sheet material.
    • 本发明提供具有优异的塑性加工性和刚性的镁合金板材和具有优异刚性的镁合金成形体。 片材具有形成含有硬质粒子的基体的镁合金。 从片材的表面到离开表面的位置的片材的厚度的40%的区域被定义为表面区域,其余区域被定义为中心区域。 存在于中心区域的硬质粒子的最大直径大于20μm且小于50μm,存在于表面区域的硬质粒子的最大直径为20μm以下。 由于存在于表面侧的硬质粒子是微细的粒子,因此在塑性加工时不太可能成为开裂的起点或其他缺陷。 由于存在于中心区域的硬质粒子较粗糙,因此能够提高片材的刚性。