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公开(公告)号：KR101316248B1
公开(公告)日：2013-10-08
申请号：KR1020110053074
申请日：2011-06-02
CPC classification number: C21D7/13 , C21D1/26 , C21D11/005 , C21D2211/009 , C22C38/02 , C22C38/04 , C22C38/24
Abstract: 강재를 고온압축 변형하는 열간단조단계; 상기 열간단조단계에 의한 열간단조체를 저온의 펄라이트 변태구간으로 급속냉각하는 급속냉각단계; 상기 급속냉각단계에 의해 과냉된 열간단조체를 저온의 펄라이트 변태구간에서 등온으로 유지시키는 등온변태단계; 및 상기 등온변태단계를 거친 열간단조체를 공랭하는 공랭단계;를 포함하는 초미세립 펄라이트 조직을 갖는 비조질강의 제조방법과 그에 의한 비조질강이 소개된다.
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Patent Agency Ranking
公开(公告)号：KR1020120028657A
公开(公告)日：2012-03-23
申请号：KR1020100090645
申请日：2010-09-15
CPC classification number: C21D11/005 , B21J1/06 , C21D2211/005 , C21D2211/009
Abstract: PURPOSE: A multi-stage control cooling process for manufacture of V-MA pearlite-ferrite hot-forged steel is provided to increase the ferrite fraction by super-cooling a hot-formed structure to low temperatures and maintaining a constant temperature at the transformation temperature of ferrite. CONSTITUTION: A multi-stage control cooling process for manufacture of V-MA pearlite-ferrite hot-forged steel comprises the steps of: rapidly cooling a hot-forged body to a low transformation temperature range of austenite-ferrite, maintaining a constant temperature in the transformation temperature range of austenite-ferrite, and air-cooling the hot-forged body.
Abstract translation: 目的：提供用于制造V-MA珠光体 - 铁素体热锻钢的多级控制冷却方法，以通过将热成型结构超冷却至低温并在转变温度保持恒定温度来提高铁素体分数 的铁素体。 构成：用于制造V-MA珠光体 - 铁素体热锻钢的多级控制冷却方法包括以下步骤：将热锻件快速冷却至奥氏体 - 铁素体的低相变温度范围，保持恒定温度 奥氏体铁素体的转变温度范围，并对热锻造体进行空冷。
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公开(公告)号：KR1020120134280A
公开(公告)日：2012-12-12
申请号：KR1020110053074
申请日：2011-06-02
CPC classification number: C21D7/13 , C21D1/26 , C21D11/005 , C21D2211/009 , C22C38/02 , C22C38/04 , C22C38/24 , C21D8/005 , C22C38/22
Abstract: PURPOSE: Non-normalized steel with an ultrafine grained pearlite structure and a preparation method thereof are provided to obtain an ultrafine grained colony and lamella structure by restricting ferrite transformation and continuous cooling pearlite transformation and inducing low-temperature pearlite. CONSTITUTION: A method for preparing non-normalized steel with an ultrafine grained pearlite structure comprises the steps of: compressing a steel material at high temperatures, rapidly cooling the hot-forged body to a low-temperature pearlite transformation range, maintaining the super-cooled hot-forged body at a constant temperature in the low-temperature pearlite transformation range, and air-cooling the hot-forged body.
Abstract translation: 目的：提供具有超细晶粒珠光体结构的非标准化钢及其制备方法，通过限制铁素体相变和连续冷却珠光体相变并诱导低温珠光体获得超细晶粒菌落和薄片结构。 构成：用超细晶粒珠光体组织制造非标准化钢的方法包括以下步骤：在高温下压缩钢材，将热锻件快速冷却至低温珠光体相变范围，保持超冷却 在低温珠光体相变范围内恒温恒温锻造身体，并对热锻体进行空冷。
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公开(公告)号：KR101546136B1
公开(公告)日：2015-08-21
申请号：KR1020130090520
申请日：2013-07-30
Abstract: 석출경화형고강도, 고연성및 경량성이우수한경량 wrought-강재및 그제조방법에대하여개시한다.본발명에따른경량 wrought-강재는중량%로, 망간(Mn) : 10.0~15.0%, 알루미늄(Al) : 6.0~9.0%, 크롬(Cr) : 3.0~5.0%, 탄소(C) : 0.8~1.2% 및나머지철(Fe)과불가피한불순물로이루어지고, 주상은오스테나이트상이며, 제2상으로페라이트상과나노κ-카바이드((Fe,Mn)AlC) 입자를포함하는복합조직을갖는것을특징으로한다. 본발명에따른경량 wrought-강재의또 다른특징은발명강의독특한변형기구로서, 변형이압연밴드를따라국부적으로집중됨에따라형성되는변형밴드의발달로이루어지는변형기구를나타내는것을특징으로한다.
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公开(公告)号：KR1020150015594A
公开(公告)日：2015-02-11
申请号：KR1020130090520
申请日：2013-07-30
Abstract: 석출경화형 고강도, 고연성 및 경량성이 우수한 경량 강재 및 그 제조 방법에 대하여 개시한다.
본 발명에 따른 경량 강재는 중량%로, 망간(Mn) : 10.0~15.0%, 알루미늄(Al) : 6.0~9.0%, 크롬(Cr) : 3.0~5.0%, 탄소(C) : 0.8~1.2% 및 나머지 철(Fe)과 불가피한 불순물로 이루어지고, 주상은 오스테나이트 상이며, 제2상으로 페라이트 상과 나노 κ-카바이드((Fe,Mn)
3 AlC) 입자를 포함하는 복합조직을 갖는 것을 특징으로 한다.Abstract translation: 公开了具有高强度，高延展性和优异的轻度的沉淀硬化轻质钢及其制造方法。 根据本发明的轻质钢由10.0-15.0重量％的锰（Mn），6.0-9.0重量％的铝（Al），3.0-5.0重量％的铬（Cr），0.8-1.2重量％ 碳（C）％，其余由铁（Fe）和不可避免的杂质组成。 主相是奥氏体相，具有包含铁素体相作为第二相的复合结构和纳米碳化物（（Fe，Mn）3 AlC）颗粒。
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公开(公告)号：KR1020080099679A
公开(公告)日：2008-11-13
申请号：KR1020070045542
申请日：2007-05-10
Applicant: 한국과학기술원
IPC: H01F10/14
Abstract: A fabrication method of CrTi underlayer for the processing FePt thin film for magnetic recording media is provided to reduce the temperature of the manufacturing FePt thin film to 250.C by using CrTi alloy underlayer. An FePt magnetic thin film using the CrTi underlayer is comprised of steps: obtaining the optimum Ti composition from the CrTi alloyed thin film; obtaining the underlayer having the optimum thickness of the alloyed thin film; obtaining magnetic thin film from the underlayer having the optimum thickness. In the optimum composition of the CrTi underlayer, X is 5at.%-20at.%, and the thickness of the CrTi underlayer is 1nm~50nm range to optimize the process condition of low temperature vapor deposition.
Abstract translation: 提供用于处理用于磁记录介质的FePt薄膜的CrTi底层的制造方法，通过使用CrTi合金底层将制造FePt薄膜的温度降低至250℃。 使用CrTi底层的FePt磁性薄膜包括以下步骤：从CrTi合金化薄膜获得最佳的Ti组成; 获得具有合金化薄膜的最佳厚度的底层; 从具有最佳厚度的底层获得磁性薄膜。 在CrTi底层的最佳组成中，X为5at。％〜20at。％，CrTi底层的厚度为1nm〜50nm，优化了低温气相沉积工艺条件。
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