公开(公告)号：US20150147225A1

公开(公告)日：2015-05-28

申请号：US14006966

申请日：2012-08-30

申请人： Dong Geun Lee ,  Yong Tai Lee

发明人： Dong Geun Lee ,  Yong Tai Lee

IPC分类号： C22C14/00

CPC分类号： C22C14/00

摘要： Provided is a beta-type titanium alloy having a low elastic modulus and a high strength. The titanium alloy includes 6 to 13 wt % of Mo, 0.1 to 3.9 wt % of Fe, a remaining amount of Ti, and inevitable impurity, and selectively includes 0.1 to 3.9 wt % of Al. The titanium alloy according to the present invention has a high tensile strength of greater than or equal to 1,300 MPa and a low elastic modulus of less than or equal to 95 GPa at low cost.

摘要翻译： 提供具有低弹性模量和高强度的β型钛合金。 钛合金包含6〜13重量％的Mo，0.1〜3.9重量％的Fe，剩余量的Ti和不可避免的杂质，并且选择性地包含0.1〜3.9重量％的Al。 根据本发明的钛合金具有大于或等于1300MPa的高拉伸强度和低成本的小于或等于95GPa的低弹性模量。

公开(公告)号：US20130248051A1

公开(公告)日：2013-09-26

申请号：US13988348

申请日：2012-03-23

申请人： Dong Geun Lee ,  Yong Tai Lee

发明人： Dong Geun Lee ,  Yong Tai Lee

IPC分类号： C23C8/20 ,  C23C8/24

CPC分类号： C23C8/20 ,  C23C8/02 ,  C23C8/24 ,  C23C8/28 ,  C23C8/30 ,  C23C8/80

摘要： Disclosed is a method capable of inexpensively forming a gradient-hardened rigid layer which has characteristics of functionally graded material on the surface layer of titanium. The method includes (a) injecting titanium into a heat treatment apparatus and performing ventilation to maintain an atmospheric pressure of 10−4 torr or less, (b) performing a pretreatment process of heating the titanium at 730 to 800° C. for 10 minutes to 5 hours to remove an oxide film formed on the surface of the titanium, (c) injecting one or more gases selected from nitrogen, oxygen, and carbon into the heat treatment apparatus and heating the titanium at 740 to 950° C. for 30 minutes to 20 hours such that a gradient-hardened rigid layer having a concentration gradient of the gases is formed on the surface of the titanium, and (d) cooling the titanium.

摘要翻译： 公开了一种能够廉价地形成在钛表面层上具有功能梯度材料特性的梯度硬化刚性层的方法。 该方法包括（a）将钛注入热处理设备中并进行通气以维持10-4托或更低的大气压力，（b）进行在730至800℃加热10分钟的预处理过程 至5小时以除去形成在钛表面的氧化膜，（c）将一种或多种选自氮，氧和碳的气体注入热处理设备中，并将该钛在740至950℃下加热30分钟 分钟至20小时，使得在钛的表面上形成具有气体浓度梯度的梯度硬化刚性层，和（d）冷却钛。

公开(公告)号：US5185045A

公开(公告)日：1993-02-09

申请号：US735958

申请日：1991-07-25

申请人： Manfred Peters ,  Karl-Josef Grundhoff ,  Hartmut Schurmann ,  Yong-Tai Lee

发明人： Manfred Peters ,  Karl-Josef Grundhoff ,  Hartmut Schurmann ,  Yong-Tai Lee

IPC分类号： C22C1/04 ,  C22F1/18

CPC分类号： C22F1/183 ,  C22C1/0458

摘要： A process as described for treating Ti.sub.3 Al-based alloys comprising, inddition to titanium and aluminum as .alpha.-phase-stabilizing element, niobium and further elements stabilizing the .beta.-phase in an amount of from 20 to 30% by weight, wherein the further elements stabilizing the .beta. phase are present in an amount of at least 4% by weight by(a) preparing the alloys by melting or via the powder-metallurgical route,(b) deforming at a temperature within the (.alpha..sub.2 +.beta.)-phase area by more than 60% in one or more steps with stress-relief annealing without complete recrystallization effected between these steps,(c) solution annealing the formed part for from 5 minutes to 120 minutes below the .beta.-transus temperature of the alloy,(d) quenching, and(e) subsequent aging/stress-relief annealing at temperatures within the range of from 500.degree. for 75.degree. C. for from 0.5 to 24 hours.

摘要翻译： 所描述的用于处理Ti 3 Al基合金的方法，除了钛和铝作为α-相稳定元素之外，还包含以20-30％重量的量将所述β-相稳定化的其它元素，其中进一步 通过（a）通过熔化或通过粉末冶金途径制备合金，（b）在（α2+β）内的温度下变形，稳定β相的元素以至少4重量％的量存在， 在这些步骤之间，在一个或多个步骤中，具有应力消除退火而没有完全重结晶的一个或多个阶段的相面积大于60％;（c）在合金的β-转变温度以下5分钟至120分钟内对所形成的部分进行固溶退火， （d）淬火，和（e）在75℃范围内的温度范围内随后的老化/应力消除退火0.5至24小时。