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    Metallic glass composites with controllable work-hardening capacity
    1.
    发明申请
    Metallic glass composites with controllable work-hardening capacity 审中-公开

    公开(公告)号：US20170101702A1

    公开(公告)日：2017-04-13

    申请号：US15287693

    申请日：2016-10-06

    Applicant: Seoul National University R&DB Foundation

    Inventor： Eun Soo PARK ,  Wookha RYU ,  Hyun Seok OH ,  Jinwoo KIM ,  So Yeon KIM

    IPC: C22C45/10

    CPC classification number: C22C45/10 ,  C22C1/002 ,  C22C45/001

    Abstract: There are provided metallic glass matrix composites with controllable work-hardening capacity. In more detail, there are provided metallic glass matrix composite with controllable work-hardening capacity capable of having significantly excellent toughness due to a metastable second phase precipitated in-situ in a metallic glass matrix by polymorphic phase transformation during a solidification process without a separate synthetic process, and capable of controlling work-hardening capacity by measuring physical properties of a second phase and adjusting a volume fraction (Vf) of the second phase due to constant correlation between the physical properties (absorbed energy Eta, a phase transformation temperature TMs, or a hardness H2nd) of a metastable B2 second phase precipated in the metallic glass matrix and the absorbed energy (Epa,V) by work-hardening per unit volume fraction of the second phase in the metallic glass matrix.

    COMPLEX CONCENTRATED SOFT MAGNETIC AMORPHOUS ALLOYS WITH MULTI-COMPLEX QUENCHED-IN NUCLEI AND MANUFACTURING METHOD THEREOF
    2.
    发明公开
    COMPLEX CONCENTRATED SOFT MAGNETIC AMORPHOUS ALLOYS WITH MULTI-COMPLEX QUENCHED-IN NUCLEI AND MANUFACTURING METHOD THEREOF 审中-公开

    公开(公告)号：US20240240296A1

    公开(公告)日：2024-07-18

    申请号：US18413467

    申请日：2024-01-16

    Applicant: SEOUL NATIONAL UNIVERSITY R&DB FOUNDATION

    Inventor： Eun Soo PARK ,  Wookha RYU ,  Kyungjun KIM ,  Kook Noh YOON ,  Wan KIM

    IPC: C22C45/02 ,  C22C33/00 ,  H01F1/153

    CPC classification number: C22C45/02 ,  C22C33/003 ,  H01F1/15308

    Abstract: The present disclosure relates to a complex concentrated soft magnetic amorphous alloy with multi-complex quenched-in nuclei and a method for manufacturing the same, and more specifically, to a complex concentrated soft magnetic amorphous alloy which exhibits low coercivity while improving glass forming ability through the design of configurational entropy control complex alloying composition of a first main element group (Fe, Co, Ni), which determines the degree of magnetization as ferromagnetic metallic elements, a second alloying element group (B, Si, P, C), which facilitates amorphous formation, and a third cluster element group (Ca, Cu, Ag), which forms multi-complex quenched-in nuclei, and a method for manufacturing the same.
    The complex concentrated soft magnetic amorphous alloy developed in the present disclosure is characterized by having an excellent switching effect in which the alloy is easily magnetized and demagnetized when a magnetic field is applied and removed by implementing low coercivity. In addition, the present disclosure provides guidelines for alloy development to develop a new alloy with excellent functionality realized by applying a complex concentrated alloy design method to amorphous alloy design. In addition, the present disclosure has presented a step of performing a precise heat treatment based on the (time)-(temperature)-(transformation) curve measurement of the manufactured complex concentrated soft magnetic amorphous alloy, thereby presenting a method capable of effectively controlling an amorphous structure control that has been optimized through the existing trial and error method based on the prediction.

    Metallic glass composites with controllable work-hardening capacity
    3.
    发明申请
    Metallic glass composites with controllable work-hardening capacity 审中-公开

    公开(公告)号：US20190062884A1

    公开(公告)日：2019-02-28

    申请号：US16106232

    申请日：2018-08-21

    Applicant: Seoul National University R&DB Foundation

    Inventor： Eun Soo PARK ,  Wookha RYU ,  Hyun Seok OH ,  Jinwoo KIM ,  So Yeon KIM

    IPC: C22C45/10

    Abstract: There are provided metallic glass matrix composites with controllable work-hardening capacity. In more detail, there are provided metallic glass matrix composite with controllable work-hardening capacity capable of having significantly excellent toughness due to a metastable second phase precipitated in-situ in a metallic glass matrix by polymorphic phase transformation during a solidification process without a separate synthetic process, and capable of controlling work-hardening capacity by measuring physical properties of a second phase and adjusting a volume fraction (Vf) of the second phase due to constant correlation between the physical properties (absorbed energy Eta, a phase transformation temperature TMs, or a hardness H2nd) of a metastable B2 second phase precipated in the metallic glass matrix and the absorbed energy (Epa,V) by work-hardening per unit volume fraction of the second phase in the metallic glass matrix.

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