公开(公告)号：US5417781A

公开(公告)日：1995-05-23

申请号：US261312

申请日：1994-06-14

申请人： Paul A. McQuay ,  Dennis M. Dimiduk ,  Young-Won Kim

发明人： Paul A. McQuay ,  Dennis M. Dimiduk ,  Young-Won Kim

IPC分类号： C22C14/00 ,  C22F1/18

CPC分类号： C22C14/00 ,  C22F1/183

摘要： Gamma titanium aluminide alloy articles having improved properties are produced by the following methods:The first of these methods comprises the steps of: (a) heat treating an alloy billet or preform at a temperature in the approximate range of T.sub..alpha. to T.sub..alpha. +100.degree. C. for about 0.5 to 8 hours, (b) shaping the billet at a temperature between T.sub..alpha. -30.degree. C. and T.sub..alpha. to produce a shaped article, and (c) aging the thus-shaped article at a temperature between about 750.degree. and 1050.degree. C. for about 2 to 24 hours.The second method comprises (a) rapidly preheating an alloy preform to a temperature in the approximate range of T.sub..alpha. to T.sub..alpha. +100.degree. C., (b) shaping the billet at a temperature between T.sub..alpha. and T.sub..alpha. +100.degree. C. to produce a shaped article, and (c) aging the thus-shaped article at a temperature between about 750.degree. and 1050.degree. C. for about 2 to 24 hours. The preform is held at the preheat temperature for 0.1 to 2 hours, just long enough to bring the preform uniformly to the shaping temperature.The third method comprises the steps of: (a) heat treating an alloy billet or preform at a temperature in the approximate range of T.sub..alpha. to T.sub..alpha. +100.degree. C. for about 0.5 to 8 hours, (b) rapidly heating the preform to shaping temperature, if the shaping temperature is greater than the heat treatment temperature, (c) shaping the preform at a temperature between T.sub..alpha. and T.sub..alpha. +100.degree. C. to produce a shaped article, and (d) aging the thus-shaped article at a temperature between about 750.degree. and 1050.degree. C. for about 2 to 24 hours.The fourth method comprises the steps of: (a) heat treating an alloy billet or preform at a temperature in the approximate range of T.sub..alpha. -40.degree. C. to T.sub..alpha. to for about 0.1 to 2 hours, (b) rapidly preheating the preform to shaping temperature, (c) shaping the preform at a temperature between T.sub..alpha. and T.sub..alpha. +100.degree. C. to produce an shaped article, and (d) aging the thus-shaped article at a temperature between about 750.degree. and 1050.degree. C. for about 2 to 24 hours.

公开(公告)号：US6101086A

公开(公告)日：2000-08-08

申请号：US47521

申请日：1998-03-25

申请人： Jung-Hoon Kim ,  Young-Won Kim

发明人： Jung-Hoon Kim ,  Young-Won Kim

IPC分类号： G06F1/16

CPC分类号： G06F1/1616 ,  G06F1/1656

摘要： A portable computer is provided that has hand grips on both sides of the main body of the computer. The hand grips allow the computer to be carried with two hands when the display screen is in an open position and allow the computer to be carried with one hand when the display screen is in a closed position. Additionally, a rubber bumper may be installed around the hand grips and the side of the main body of the computer to increase the ability of the computer to withstand impacts with foreign object. Furthermore, the computer may be designed with any one of an elliptical prism shape, a circular prism shape, and an oblong prism shape to further reduce the stress experienced by the computer when the computer undergoes an impact with a foreign object.For situations when a user wishes to transport the laptop computer without holding the computer in either hand, a shoulder strap may be fastened to the hand grips to allow the computer to be carried over a shoulder.

摘要翻译： 提供了一种便携式计算机，其具有在计算机主体两侧的手柄。 当显示屏处于打开位置时，手柄允许计算机用双手携带，并且当显示屏处于关闭位置时允许计算机用一只手携带。 此外，橡胶保险杠可以围绕手柄和计算机主体的一侧安装，以增加计算机承受异物冲击的能力。 此外，计算机可以被设计为椭圆形棱镜形状，圆形棱镜形状和长方形棱镜形状中的任何一种，以进一步减少计算机当与异物碰撞时经受的应力。 对于用户希望运输膝上型计算机而不用任何一只手握住计算机的情况，可以将肩带固定在手柄上，以使计算机能够承载在肩上。

公开(公告)号：US5746846A

公开(公告)日：1998-05-05

申请号：US652679

申请日：1996-05-28

申请人： Young-Won Kim ,  Dennis M. Dimiduk

发明人： Young-Won Kim ,  Dennis M. Dimiduk

IPC分类号： B22F3/24 ,  C22C1/04 ,  C22C14/00 ,  C22F1/18

CPC分类号： C22C1/0491 ,  B22F3/24 ,  C22C14/00 ,  C22F1/183

摘要： Gamma titanium aluminide alloys having the composition Ti-(45.5-47.5)Al-(0-3.0)X-(1-5)Y-(0.05-1.0)W, where X is Cr, Mn or any combination thereof, and Y is Nb, Ta or any combination thereof (at %), are treated to provide specific microstructures. To obtain duplex microstructures, the annealing temperature (T.sub.a) range is the eutectoid temperature (T.sub.e)+100.degree. C. to the alpha transus temperature (T.sub..alpha.)-30.degree. C.; to obtain nearly lamellar microstructures, the annealing temperature range is T.sub..alpha. -20.degree. C. to T.sub..alpha. -1.degree. C.; to obtain fully lamellar microstructures, the annealing temperature range is T.sub..alpha. to T.sub..alpha. +50.degree. C. The times required for producing these microstructures range from 0.25 to 15 hours, depending on the desired microstructure, alloy composition, annealing temperature selected, material section size and grain size desired. The cooling schemes and rates after annealing depend mainly on the microstructure type and stability; for duplex and nearly lamellar microstructures, the initial cooling rate is 5.degree. to 1000.degree. C./min, while for fully lamellar microstructure, the the initial cooling rate is 5.degree. to 100.degree. C./min. The article can be cooled at the initial rate directly to the aging temperature; alternatively, the article can be cooled at the initial rate down to a temperature between room temperature and the annealing temperature, then cooled to room temperature at a cooling rate between the initial rate and water quenching, after which the article is aged. Following annealing, the article is aged at a temperature in the range of 700.degree. C. to 1050.degree. C. for about 4 to 150 hours.

摘要翻译： 具有Ti-（45.5-47.5）Al-（0-3.0）X-（1-5）Y-（0.05-1.0）W的组成的γ族铝化合物合金，其中X是Cr，Mn或其任何组合，Y 是Nb，Ta或其任何组合（at％））进行处理以提供特定的微观结构。 为了获得双相微观结构，退火温度（Ta）的范围是共渗温度（Te）+100℃至α转变温度（Tα）-30℃。 为了获得几乎层状微观结构，退火温度范围为Tα-20℃至Tα-1℃。 为了获得完全的层状微观结构，退火温度范围为Tα至Tα+ 50℃。根据所需的显微组织，合金组成，选择的退火温度，材料截面，制备这些微结构所需的时间为0.25至15小时 尺寸和晶粒尺寸。 退火后的冷却方案和速率主要取决于微观结构类型和稳定性; 对于双相和几乎层状微观结构，初始冷却速率为5〜1000℃/ min，而对于完全层状微观结构，初始冷却速率为5〜100℃/ min。 该物品可以以初始速率直接冷却至老化温度; 或者，可以以初始速率将制品冷却至室温和退火温度之间的温度，然后以初始速率和水淬之间的冷却速率冷却至室温，之后制品老化。 退火后，将制品在700℃至1050℃的温度下老化约4至150小时。

公开(公告)号：USH1988H1

公开(公告)日：2001-09-04

申请号：US09111258

申请日：1998-06-30

申请人： Young-Won Kim ,  Dennis M. Dimiduk

发明人： Young-Won Kim ,  Dennis M. Dimiduk

IPC分类号： C22F118

摘要： Methods are presented to produce duplex (DP) microstructures, nearly lamellar (NL) microstructures, and fully TMT lamellar (TMTL) microstructures in gamma titanium aluminide alloy articles. The key step for obtaining a specific type of microstructure is the post-hot work annealing treatment at a temperature in a specific range for the desired microstructure. The annealing temperatures range from Te+100° C. to T&agr;−25° C. for duplex (DP) microstructures, from T&agr;−25° C. to T&agr;−5° C. for nearly lamellar (NL) microstructures, and from T&agr; to T&agr;+60° C. for fully TMT lamellar (TMTL) microstructures, where Te is the titanium-aluminum eutectoid temperature of the alloy and T&agr; is the alpha transus temperature of the alloy. The times required for producing specific microstructures range from 2 min to 15 hours depending on microstructural type, alloy composition, annealing temperature selected, material section size, and desired grain-size. The heating rate to the post-hot work annealing treatment is critical and must be fast enough to avoid compositional segregation (in the two-phase field) and uneven grain growth. Cooling schemes and rates after the annealing treatments are determined according to the microstructural features of interest, and their stability.

公开(公告)号：US6163450A

公开(公告)日：2000-12-19

申请号：US47520

申请日：1998-03-25

申请人： Young-Won Kim

发明人： Young-Won Kim

IPC分类号： G06F1/16 ,  H05K5/00

CPC分类号： G06F1/1616 ,  G06F1/1656 ,  G06F1/166

摘要： A portable computer is provided that has a monitor pivotally mounted onto a main body. The base of the main body have holes that can receive a fastener. On the sides of the main body are receptacles that are positioned near a corresponding hole in the base of the main body of the computer.An L-shaped member forms a connector that allows a strap to be attached to the portable computer to allow the computer to be more easily transported. The L shaped member has a bore on one leg and a boss on the other leg. To attach the connector the boss is inserted into a receptacle in the side of the main body and the bore of the connector is aligned over a hole in the base of the main body. Then, a fastener is inserted through the bore and into the hole in the base of the main body.On a portion of the connector is a bail shaped member that forms a chute between the member and the connector. A strap can be attached to the bail shaped member to simplify the transporting of the portable computer. Additionally, the bail shaped member can be used to tilt the portable computer up at an angle more convenient for use by a user.With the connectors of the present invention it is possible to more quickly ready a portable computer for transport and possible to eliminate the need for a separate tilting device. Additionally, by looping the strap around one's neck, a user can use the portable computer while walking without fear of dropping the computer. This design is ideal for operating the portable computer while performing multiple short distance moves. If a user is in a hurry, the strap need not be removed during use and the portable computer can simply be slung over a shoulder when quick movement is again required.

摘要翻译： 提供了一种便携式计算机，其具有枢转地安装在主体上的监视器。 主体的底座具有能够接收紧固件的孔。 在主体的两侧是位于计算机主体底部相应孔附近的插座。 L形构件形成连接器，其允许带子连接到便携式计算机以允许计算机更容易地运输。 L形构件在一条腿上具有孔，在另一条腿上具有凸起。 为了安装连接器，凸台被插入主体侧面的插座中，并且连接器的孔对准在主体的基座的一个孔上。 然后，紧固件穿过孔插入主体的基部中的孔中。 在连接器的一部分上是形成在构件和连接器之间的滑槽的吊环形构件。 带子可以附接到吊钩形构件以简化便携式计算机的运输。 此外，吊环形构件可以用于使便携式计算机以更方便用户使用的角度向上倾斜。 利用本发明的连接器，可以更快速地准备便携式计算机用于运输，并且可以消除对单独的倾斜装置的需要。 另外，通过将表带环绕在脖子上，用户可以在行走时使用便携式计算机，而不用担心丢弃计算机。 这种设计是在执行多个短距离移动时操作便携式计算机的理想选择。 如果用户匆忙，则在使用过程中不需要移除皮带，并且当需要快速移动时，便携式计算机可以简单地踩在肩上。

公开(公告)号：US5558729A

公开(公告)日：1996-09-24

申请号：US379860

申请日：1995-01-27

申请人： Young-Won Kim ,  Dennis M. Dimiduk

发明人： Young-Won Kim ,  Dennis M. Dimiduk

IPC分类号： B22F3/24 ,  C22C1/04 ,  C22C14/00 ,  C22F1/18

CPC分类号： C22C1/0491 ,  B22F3/24 ,  C22C14/00 ,  C22F1/183

摘要： Gamma titanium aluminide alloys having the composition Ti--(45.5-47.5)Al--(0-3.0)X--(1-5)Y--(0.05-1.0)W, where X is Cr, Mn or any combination thereof, and Y is Nb, Ta or any combination thereof (at %), are treated to provide specific microstructures. To obtain duplex microstructures, the annealing temperature (T.sub.a) range is the eutectoid temperature (T.sub.e)+100.degree. C. to the alpha transus temperature (T.sub..alpha.)-30.degree. C.; to obtain nearly lamellar microstructures, the annealing temperature range is T.sub..alpha. -20.degree. C. to T.sub..alpha. -1.degree. C.; to obtain fully lamellar microstructures, the annealing temperature range is T.sub..alpha. to T.sub..alpha. +50.degree. C. The times required for producing these microstructures range from 0.25 to 15 hours, depending on the desired microstructure, alloy composition, annealing temperature selected, material section size and grain size desired. The cooling schemes and rates after annealing depend mainly on the microstructure type and stability; for duplex and nearly lamellar microstructures, the initial cooling rate is 5.degree. to 1000.degree. C./min, while for fully lamellar microstructure, the initial cooling rate is 5.degree. to 100.degree. C./min. The article can be cooled at the initial rate directly to the aging temperature; alternatively, the article can be cooled at the initial rate down to a temperature between room temperature and the annealing temperature, then cooled to room temperature at a cooling rate between the initial rate and water quenching, after which the article is aged. Following annealing, the article is aged at a temperature in the range of 700.degree. C. to 1050.degree. C. for about 4 to 150 hours.

摘要翻译： 具有Ti-（45.5-47.5）Al-（0-3.0）X-（1-5）Y-（0.05-1.0）W的组成的γ族铝化合物合金，其中X是Cr，Mn或其任何组合，Y 是Nb，Ta或其任何组合（at％））进行处理以提供特定的微观结构。 为了获得双相微观结构，退火温度（Ta）的范围是共渗温度（Te）+100℃至α转变温度（Tα）-30℃。 为了获得几乎层状微观结构，退火温度范围为Tα-20℃至Tα-1℃。 为了获得完全的层状微观结构，退火温度范围为Tα至Tα+ 50℃。根据所需的显微组织，合金组成，选择的退火温度，材料截面，制备这些微结构所需的时间为0.25至15小时 尺寸和晶粒尺寸。 退火后的冷却方案和速率主要取决于微观结构类型和稳定性; 对于双相和几乎层状微观结构，初始冷却速率为5〜1000℃/ min，而对于完全层状微观结构，初始冷却速率为5〜100℃/ min。 该物品可以以初始速率直接冷却至老化温度; 或者，可以以初始速率将制品冷却至室温和退火温度之间的温度，然后以初始速率和水淬之间的冷却速率冷却至室温，之后制品老化。 退火后，将制品在700℃至1050℃的温度下老化约4至150小时。

公开(公告)号：US5226985A

公开(公告)日：1993-07-13

申请号：US823737

申请日：1992-01-22

申请人： Young-Won Kim ,  Dennis M. Dimiduk

发明人： Young-Won Kim ,  Dennis M. Dimiduk

IPC分类号： C22F1/18

CPC分类号： C22F1/183

摘要： A first method for producing articles of gamma titanium alumide alloy having improved properties comprises the steps of: (a) shaping the article at a temperature between the titanium-aluminum eutectoid temperature of the alloy and the alpha-transus temperature of the alloy, and (b) aging the thus-shaped article at a temperature between about 750.degree. and 1050.degree. C. for about 4 to 150 hours. Shaping is preferably carried out at a temperature about 0.degree. to 50.degree. C. below the alpha-transus temperature.A second method for producing articles of gamma titanium aluminide alloy having improved properties comprises the steps of: (a) shaping the article at a temperature in the approximate range of about 130.degree. C. below the titanium-aluminum eutectoid temperature of the alloy to about 20.degree. C. below the alpha-transus temperature of the alloy; (b) heat treating the thus-shaped article at about the alpha-transus temperature of the alloy for about 15 to 120 minutes; and (c) aging the thus-heat treated article at a temperature between about 750.degree. and 1050.degree. C. for about 4 to 300 hours.

摘要翻译： 用于生产具有改进性能的γ钛铝合金制品的第一种方法包括以下步骤：（a）在合金的钛 - 铝共析温度和合金的α-转变温度之间的温度下成型该制品，和（ b）在约750℃和1050℃之间的温度下老化这样形状的制品约4至150小时。 成型优选在低于α转子温度的0℃至50℃的温度下进行。 用于生产具有改进性能的γ钛铝化物合金制品的第二种方法包括以下步骤：（a）在低于合金的钛 - 铝共析温度约130℃的温度下将制品成型为约 低于合金的α-转变温度20℃; （b）在大约合金的α转变温度下将如此形成的制品热处理约15至120分钟; 和（c）在约750℃和1050℃之间的温度下老化这样热处理的制品约4至300小时。

公开(公告)号：US5067988A

公开(公告)日：1991-11-26

申请号：US474197

申请日：1990-02-02

申请人： Francis H. Froes ,  D. Simon Shong ,  Young-Won Kim ,  Frederick C. Yolton

发明人： Francis H. Froes ,  D. Simon Shong ,  Young-Won Kim ,  Frederick C. Yolton

IPC分类号： C22F1/02

CPC分类号： C22F1/02 ,  Y10T428/12486

摘要： A method for refining the microstructure and enhancing the processability of titanium aluminum alloys containing about 45 to 55 atomic percent aluminum which comprises the steps of:(a) rapidly solidifying a titanium aluminum alloy containing about 45 to 55 atomic percent aluminum to provide a rapidly solidified material having at least one dimension not greater than about 100 micrometers;(b) diffusing hydrogen into the resulting rapidly solidified material at a temperature in the approximate range of 400.degree. to 780.degree. C., and;(c) diffusing hydrogen out of the hydrogenated solid material.

摘要翻译： 一种用于精炼微结构并提高含有约45至55原子％铝的钛铝合金的加工性的方法，其包括以下步骤：（a）将包含约45至55原子％的铝的钛铝合金快速固化，以提供快速凝固 具有至少一个尺寸不大于约100微米的材料; （b）将氢气扩散到所得快速固化的材料中，温度约为400至780℃。 （c）从氢化固体材料中扩散氢。

公开(公告)号：US6036287A

公开(公告)日：2000-03-14

申请号：US170031

申请日：1998-10-13

申请人： Young-Won Kim

发明人： Young-Won Kim

IPC分类号： G06F1/16 ,  A47B81/00

CPC分类号： G06F1/1616 ,  G06F1/1656 ,  G06F1/166 ,  G06F1/1679

摘要： The present invention relates to a portable computer with endurance against shock by attachment of a shock-absorber to the portable computer. The external shock to the portable computer during transport is absorbed by a shock-absorber which is attached to the portable computer so as to cover an external case, an edge part of a cover case of the external case, and an established area of a main body case.

摘要翻译： 本发明涉及通过将减震器附接到便携式计算机而具有耐冲击性的便携式计算机。 在运输过程中对便携式计算机的外部冲击由附接到便携式计算机的减震器吸收，以便覆盖外壳，外壳的外壳的边缘部分和主体的建立区域 身体情况。

公开(公告)号：US4851193A

公开(公告)日：1989-07-25

申请号：US310448

申请日：1989-02-13

申请人： Yashwant R. Mahajan ,  Young-Won Kim ,  Francis H. Froes

发明人： Yashwant R. Mahajan ,  Young-Won Kim ,  Francis H. Froes

IPC分类号： C22C21/00

CPC分类号： C22C21/00

摘要： An improved alloy consisting essentially of about 6 to 10 weight percent Fe, about 2 to 10 weight percent Gd, balance Al. The alloy may also contain minor amounts of one or more refractory metals.

摘要翻译： 一种改进的合金，其基本上由约6至10重量％的Fe，约2至10重量％的Gd，余量为Al组成。 合金还可以含有少量的一种或多种难熔金属。