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公开(公告)号：KR1020020078936A
公开(公告)日：2002-10-19
申请号：KR1020010019353
申请日：2001-04-11
Applicant: 학교법인연세대학교
IPC: C22C23/04
CPC classification number: C22C23/06 , C22C23/04 , C22C45/005 , C22F1/002 , C22F1/06
Abstract: PURPOSE: A quasicrystalline phase hardened Mg-based metal alloy having superior hot formability and high strength and elongation is provided by forming quasicrystalline phase in a metal solid solution matrix as second phase and separating the quasicrystalline phase into small particles so that they are dispersion hardened in the metal matrix, and the method for manufacturing the metal alloy is provided. CONSTITUTION: The quasicrystalline phase hardened Mg-based metal alloy is characterized in that a two-phase region of quasicrystalline phase and metal solid solution exists, and the Mg-based metal alloy comprises Mg-1-10 at.% Zn-0.1-3 at.% Y having hot formability, wherein the metal alloy has 30 vol.% or less of quasicrystalline phase volume. The method for manufacturing the quasicrystalline phase hardened Mg-based metal alloy comprises the steps of forming a quasicrystalline phase hardened Mg-based metal alloy in which a two-phase region of quasicrystalline phase and metal solid solution exists, and the Mg-based metal alloy comprises Mg-1-10 at.% Zn-0.1-3 at.% Y having hot formability by a casting method; and separating and dispersing the quasicrystalline phase into a matrix by a hot forming to increase strength and elongation of the quasicrystalline phase hardened Mg-based metal alloy, wherein the method further comprises the step of performing high temperature forming at a temperature of about 1/3 or more of melting point when manufacturing final article using the hot formed plate so that the dispersed small quasicrystalline particles are further finely distributed, and the hot forming is performed at a temperature of about 1/2 of the melting point, and volume of the quasicrystalline phase is 30 vol.% or less.
Abstract translation: 目的：通过在金属固溶体基质中形成准晶相作为第二相，将准晶相转变为小颗粒，使其分散硬化，提供了具有优异的热成型性和高强度和伸长率的准晶相硬化的Mg基金属合金 金属基体和金属合金的制造方法。 构成：准晶相硬化的Mg基金属合金的特征在于存在准晶相和金属固溶体的两相区域，Mg基金属合金包含Mg-1-10原子％Zn-0.1-3 其具有热成型性，其中所述金属合金具有30体积％以下的准结晶相体积。 制备准晶相硬化的Mg基金属合金的方法包括以下步骤：形成其中存在准晶相和金属固溶体的两相区的准晶相相硬化的Mg基金属合金，以及Mg基金属合金 包括通过流延法具有可热成形性的Mg-1-10原子％Zn-0.1-3原子％Y; 并通过热成型将准晶相分离并分散到基质中，以提高准晶相硬化的Mg基金属合金的强度和伸长率，其中该方法还包括在约1/3的温度下进行高温成形的步骤 使用热成形板制造最终制品时的熔点以上，使得分散的小准晶体颗粒进一步精细分布，并且热成型在约1/2熔点的温度下进行，并且准晶体的体积 相为30体积％以下。
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公开(公告)号：KR100784915B1
公开(公告)日：2007-12-11
申请号：KR1020060041076
申请日：2006-05-08
Applicant: 학교법인연세대학교
Abstract: 본 발명은 이상분리 지르코늄/티타늄계(Zr/Ti계) 비정질 합금에 관한 것으로서, 본 발명에 의하면 일반식 (ZT)
100-ab (A)
a (B)
b 로 표시되고, 여기서 ZT는 Zr 및 Ti 중 적어도 1종이고, (A)는 Y 및 La 중 적어도 1종이고, (B)는 Be, Fe, Co, Ni, Cu, Ag 및 Nb 중 적어도 2종이며, a, b 는 원자량%로 5≤a≤60, 20≤b≤80 범위를 갖는 비정질 형성능이 우수한 지르코늄/티타늄계 이상분리 비정질 합금이 제공된다.
본 발명의 이상분리된 비정질 합금은 나노크기를 갖는 아주 미세한 연결구조를 가지는 상분리 조직을 가지고 있어 선택적 열처리 혹은 냉각속도의 조절을 통하여 이상분리된 조성을 선택적으로 나노 결정화하여 비정질 기지 나노복합재를 손쉽게 제조할 수 있다.
이상분리, 지르코늄/티타늄계, 비정질 합금-
公开(公告)号：KR1020070108705A
公开(公告)日：2007-11-13
申请号：KR1020060041076
申请日：2006-05-08
Applicant: 학교법인연세대학교
CPC classification number: C22C45/10 , B82Y40/00 , C22C2200/02
Abstract: A Zr/Ti-based two phase metallic glass is provided to easily manufacture an amorphous matrix nano-composite by optionally nano-crystallizing a composition separated into two phases trough the control of heat treatment or cooling rate. A Zr/Ti-based two phase metallic glass having excellent glass forming ability is characterized in that the metallic glass is represented by the formula, (ZT)100-a-b(A)a(B)b, wherein ZT is at least one of Zr and Ti, (A) is at least one of Y and La, (B) is at least two of Be, Fe, Co, Ni, Cu, Ag and Nb, and a and b have an atomic percent(at.%) range of 5
Abstract translation: 提供了一种Zr / Ti基两相金属玻璃，以通过任选地将通过热处理或冷却速率的控制分离成两相的组合物纳米结晶来容易地制造无定形基质纳米复合材料。 具有优异的玻璃形成能力的Zr / Ti基双相金属玻璃的特征在于金属玻璃由式（ZT）100-ab（A）a（B）b表示，其中ZT为 Zr和Ti，（A）为Y和La中的至少一种，（B）为Be，Fe，Co，Ni，Cu，Ag和Nb中的至少两种，a和b的原子百分比（原子％ ）范围为5 <= a <= 60且20 <= b <= 80。 相对于总合金组成，金属玻璃还包括Al，Si和Sn中的至少一种，多达20at。％或更少。 金属玻璃含有Zr，其中一部分取代Hf。
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公开(公告)号：KR1020060084959A
公开(公告)日：2006-07-26
申请号：KR1020050005733
申请日：2005-01-21
Applicant: 학교법인연세대학교
IPC: C22C23/04
CPC classification number: C22C23/04 , C22C2202/00
Abstract: 본 발명은 준결정상과 고용체의 이상영역이 존재하는 Mg-Zn-Y계의 마그네슘이 풍부한 영역에서 제 4원소(Misch metal(Mm), 구리)를 첨가하여 저렴하면서도 기계적 특성이 우수한 마그네슘 합금에 관한 것이다.
본 발명의 마그네슘계 합금은 응고시 마그네슘기 고용체(알파 마그네슘)가 초정으로 형성되어 기지조직을 이루고 준결정상이 제 2상으로 마그네슘기 고용체와 공정상을 형성하는 합금으로 열간 압연이 가능한 성형성을 가지며, 제 4원소(Misch Metal, 구리)를 첨가함으로써 준결정상과 제 3상을 생성하여 우수한 기계적 성질을 나타내었다.
준결정상 강화 마그네슘 합금, 제 3상, 미쉬 메탈, 구리-
公开(公告)号：KR1020060027174A
公开(公告)日：2006-03-27
申请号：KR1020040076029
申请日：2004-09-22
Applicant: 학교법인연세대학교
IPC: C22C45/00
Abstract: 본 발명은 비정질 형성에 관한 열역학적 관점과 구조적 관점에서 제시된 인자들을 결합함으로써 벌크 비정질 형성 영역 예측 및 평가가 용이하게 이루어질 수 있는 새로운 비정질 형성능 평가인자를 이용한 다성분계 합금 조성에서 벌크 비정질 형성 예측 및 평가방법에 관한 것이다.
본 발명은 비정질 형성에 관한 열역학적 관점에서 주어진 비정질 합금에 대하여 상대적인 용융온도의 감소를 나타내는 제1평가인자 값을 구하는 단계와, 비정질 형성에 관한 동역학적 관점에서 상기 비정질 합금에 대하여 원자불일치도를 나타내는 제2평가인자 값을 구하는 단계와, 상기 구해진 제1 및 제2 평가인자 값을 결합하여 비정질 형성능 평가인자 값을 구하는 단계로 구성되는 것을 특징으로 한다.
벌크 비정질 형성 예측, 평가인자, 열역학적 관점, 구조적 관점-
Patent Agency Ranking
公开(公告)号：KR1020050013796A
公开(公告)日：2005-02-05
申请号：KR1020030052362
申请日：2003-07-29
Applicant: 학교법인연세대학교
IPC: C22C45/04
CPC classification number: C22C45/04 , C22C2200/02
Abstract: PURPOSE: To provide a Ni-based amorphous alloy composition which has superior glass forming ability even when a liquid phase Ni-based amorphous alloy is cooled to not more than a glass transition temperature at a low cooling rate of several tens of degrees Kelvin per second and has superior hot workability since it has a supercooled liquid region of 30 degrees Kelvin or more. CONSTITUTION: A Ni-based amorphous alloy composition is characterized in that it can be represented by the following general formula: Nia(ZrxTiy(Nb,Ta)z)SibSnc, wherein a, x, y, z, b and c respectively mean atom percentages of nickel, zirconium, titanium, niobium or tantalum, silicon, and tin, and 50 at.%
Abstract translation: 目的：提供一种Ni基非晶态合金组合物，即使将液相Ni基非晶态合金冷却至几秒钟以下的低冷却速度的玻璃化转变温度以下时也具有优良的玻璃形成能力 并且具有优异的热加工性，因为它具有30开氏度或更高的过冷液体区域。 构成：Ni基非晶合金组合物的特征在于其可以由以下通式表示：Nia（Zr x Ti y（Nb，Ta）z）SibSnc，其中a，x，y，z，b和c分别表示原子 百分比为镍，锆，钛，铌或钽，硅和锡，50原子％，a = 61原子％，20原子％，x = ％<= z <= 20 at。％，0 at。％<= b <= 10 at。％，0 at。％<= c <= 10 at。％，其中合金组成的特征在于 57 at。％<= a <= 59 at。％，25 at。％<= x + y <= 35 at。％，0.1 at。％<= z <= 20 at。％，0 at。％
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公开(公告)号：KR1020020087811A
公开(公告)日：2002-11-23
申请号：KR1020010026843
申请日：2001-05-16
Applicant: 학교법인연세대학교
IPC: C22C21/12
CPC classification number: C22C21/12 , C22C2200/06
Abstract: PURPOSE: A quasicrystal alloy composition is provided which forms quasicrystal single phase under the cooling rate of furnace cooling by superior quasicrystal shape performance and is effectively utilized in a dispersion reinforced composite material or coating material by superior hardness and fracture toughness. CONSTITUTION: The Al-Cu-Fe quasicrystal alloy composition comprising Be is characterized in that the Be is contained in the composition in an amount of 1 to 20 atm.% for the total composition, wherein stabilization temperature zone of (β+liquid phase) passing through during solidification is decreased while temperature section in which quasicrystal phase is produced is increased as Be element is added to the Al-Cu-Fe quasicrystal alloy composition, the quasicrystal phase obtained from the Be element added Al-Cu-Fe alloy structurally has a higher tacticity compared with quasicrystal phase obtained from the Al-Cu-Fe alloy, and a quasicrystal single phase alloy is obtained by heat treatment within a short time of 30 minutes at temperature of 750 deg.C after an ordinary casting method such as die casting method when 1 to 5 atm.% of Be is added to the Al-Cu-Fe quasicrystal alloy composition while a quasicrystal single phase is obtained by uniformly heating the ingot at temperature of 750 deg.C for about 10 minutes in case of an ingot manufactured by an ordinary die casting method when 7 atm.% or more of Be is added to the Al-Cu-Fe quasicrystal alloy composition.
Abstract translation: 目的：提供一种准晶体合金组合物，其以优良的准晶形性能在炉冷却的冷却速度下形成准晶体单相，并且通过优异的硬度和断裂韧性有效地用于分散增强复合材料或涂层材料。 构成：包含Be的Al-Cu-Fe准晶体合金组合物的特征在于组合物中的Be以总组合物的1〜20atm％的量含有，其中（β+液相）的稳定化温度区域 在Al-Cu-Fe准晶合金组合物中添加Be元素时，凝固过程中的通过减少，同时产生准晶相的温度段增加，由添加Al-Cu-Fe合金的Be元素获得的准晶体结构上具有 与由Al-Cu-Fe合金获得的准晶相相比，立构规整度更高，并且在通常的铸造法如模具之后，在750℃的温度下在短时间内在30分钟内进行热处理，获得准晶体单相合金 在Al-Cu-Fe准晶合金组合物中添加1〜5atm％的Be时，通过在750d的温度下均匀加热锭得到准晶相， 例如在通过普通压铸方法制造的铸锭的情况下，如果将7质量％以上的Be添加到Al-Cu-Fe准晶合金组合物中，则为约10分钟。
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公开(公告)号：KR1020020083285A
公开(公告)日：2002-11-02
申请号：KR1020010022724
申请日：2001-04-26
Applicant: 학교법인연세대학교
IPC: B22F9/00
Abstract: PURPOSE: A method for preparing Al-based quasicrystalline particles by self-fracturing is provided, which can prepare Al-based quasicrystalline with a particle size of about 100 μm by self-fracturing in atmosphere at low cost. CONSTITUTION: The method includes the steps of dissolving 0.1 to 1.0 wt.% of carbon in Al-Cu-Fe based alloy or Al-Co-Ni based alloy to prepare an Al-based quasicrystalline alloy ingot; heat treating the Al-based quasicrystalline alloy ingot at 730 to 780 deg.C for 2 to 5 hrs; and exposing the Al-based quasicrystalline alloy ingot in atmosphere.
Abstract translation: 目的：提供一种通过自压裂法制备基于Al的准晶体颗粒的方法，其可以通过在大气中以低成本进行自裂化来制备粒径为约100μm的Al基准晶体。 方案：该方法包括将Al-Cu-Fe系合金或Al-Co-Ni系合金中的0.1〜1.0重量％的碳溶解，制备Al系准晶合金锭; 将Al基准晶合金锭在730〜780℃下热处理2〜5小时; 并在大气中暴露Al基准晶合金锭。
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公开(公告)号：KR1020010109364A
公开(公告)日：2001-12-10
申请号：KR1020000028995
申请日：2000-05-29
Applicant: 학교법인연세대학교
IPC: C22C45/04
CPC classification number: C22C45/04 , C22C2200/02
Abstract: 본 발명은 니켈기 비정질 합금조성물에 관한 것이다. 이들 합금의 조성은 니켈-질코늄-티타늄-인 4원계 합금이며, 조성범위는 니켈 50-62 원자%, 질코늄+티타늄 33-46 원자%, 인 3-8 원자% 이며 일반식 Ni
a (Zr
lx Ti
x )
b P
c 에 의해 나타낼 수 있다.
본 발명의 니켈기 벌크 비정질 합금은 우수한 비정질 형성능을 갖고 있어서 두께 1mm 혹은 그 이상의 크기로 주조법에 의하여 제조될 수 있다. 또한 50K 이상의 과냉각 액상 영역을 갖고 있어 과냉각 액상 영역의 온도에서 점성 유동을 이용한 고온성형이 가능할 뿐 아니라 높은 강도, 내마모성, 내부식성을 지니고 있기 때문에 고강도 내마모 부품, 구조용 재료, 용접 및 코팅 재료 등에 벌크 형태의 비정질 합금으로 제조되어 사용될 수 있다.-
公开(公告)号：KR1020010087656A
公开(公告)日：2001-09-21
申请号：KR1020000011531
申请日：2000-03-08
Applicant: 학교법인연세대학교
IPC: C22C21/00
Abstract: PURPOSE: An alloy system is provided which can manufactures several Kg of quasicrystalline single phase aluminum alloy even by an ordinary casting method such as die casting. CONSTITUTION: In an aluminum alloy containing nickel and cobalt, the quasicrystalline single phase aluminum alloy is characterized in that silicon is added as a fourth element, wherein the quasicrystalline single phase aluminum alloy comprises 12 to 15 at.% of nickel, 13 to 16 at.% of copper, and 3 to 5 at.% of silicon which is added to the aluminum alloy containing nickel and copper, and wherein the quasicrystalline single phase aluminum alloy is manufactured by the die casting method.
Abstract translation: 目的：提供一种合金系统，即使通过压铸等普通铸造方法，也可制造几公斤的准晶相单相铝合金。 构成：在含有镍和钴的铝合金中，准晶态单相铝合金的特征在于添加硅作为第四元素，其中准晶体单相铝合金包含12至15原子％的镍，13至16在 的铜，和3〜5原子％的硅，其被添加到含有镍和铜的铝合金中，并且其中准晶体单相铝合金通过压铸法制造。
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