-
1.发明申请公开(公告)号：US20230069275A1
公开(公告)日：2023-03-02
申请号：US17793044
申请日：2021-03-15
发明人： Yangxin LI , Xiaoqin ZENG , Qingchun ZHU , Tao YING
摘要： The present invention relates to a high-strength, high-corrosion resistance ternary magnesium alloy and a preparation method therefor, the magnesium alloy comprising the following element components by mass percentage: 8-12 wt % of Y, 0.6-3 wt % of Al and the remainder being Mg. The method comprises: (1) under a protective atmosphere, preparing a Mg—Y intermediate alloy, an aluminum ingot and a magnesium ingot into a magnesium alloy melt; (2) under a protective atmosphere, allowing the magnesium alloy melt to stand after stirring, then carrying out refining, degassing, and slag removal, allowing the magnesium alloy melt to stand again, then thermally insulating to obtain a magnesium alloy liquid; and (3) casting and molding the magnesium alloy liquid under a protective atmosphere, and forming a cast ingot; the three steps above ultimately obtain a high-strength, high-corrosion resistance ternary magnesium alloy.
-
2.发明授权公开(公告)号：US11491546B2
公开(公告)日：2022-11-08
申请号：US16924940
申请日：2020-07-09
申请人： UT-Battelle, LLC , University of Tennessee Research Foundation , Iowa State University Research Foundation, Inc. , Eck Industries Incorporated
发明人： Alex J. Plotkowski , Orlando Rios , Sudarsanam Suresh Babu , Ryan R. Dehoff , Ryan Ott , Zachary C. Sims , Niyanth Sridharan , David Weiss , Hunter B. Henderson
IPC分类号： B22F10/20 , C22C21/08 , C22C21/06 , C22C21/00 , C22C1/04 , B22F10/00 , B33Y10/00 , C21D1/10 , C22F1/04 , C22C21/16 , B33Y80/00 , B23K26/354 , B22D21/00 , C22C1/03 , C22C28/00 , C22C30/06 , C22C23/06
摘要： Described herein are additive manufacturing methods and products made using such methods. The alloy compositions described herein are specifically selected for the additive manufacturing methods and provide products that exhibit superior mechanical properties as compared to their cast counterparts. Using the compositions and methods described herein, products that do not exhibit substantial coarsening, such as at elevated temperatures, can be obtained. The products further exhibit uniform microstructures along the print axis, thus contributing to improved strength and performance. Additives also can be used in the alloys described herein.
-
公开(公告)号：US10947609B2
公开(公告)日：2021-03-16
申请号：US16066003
申请日：2016-11-30
发明人： Chang-Dong YiM , Bong-Sun You , Ha-Sik Kim , Young-Min Kim , Byoung-Gi Moon , Jun-Ho Bae
摘要： The present invention is to provide a magnesium alloy comprising 0.001 parts by weight to 1.0 parts by weight of scandium and the balance of magnesium and unavoidable impurities, based on 100 parts by weight of a magnesium alloy, wherein the magnesium alloy has increased Fe solubility and reduced corrosion while providing excellent mechanical properties and corrosion resistance, and a method for producing the same. The magnesium alloy of the present invention can improve the corrosion resistance of the magnesium alloy by using scandium which can simultaneously prevent from microgalvanic corrosion between a substrate and impurities without deteriorating mechanical properties and improve the passivation property of the coating formed on the surface.
-
公开(公告)号：US10808301B2
公开(公告)日：2020-10-20
申请号：US15145075
申请日：2016-05-03
发明人： Yuichi Ienaga , Masao Ishida
摘要： A magnesium alloy is provided which does not contain a rare earth and which achieves, in a high-temperature region of about 200° C., both satisfactory mechanical properties and thermal conductivity. A magnesium alloy including Mg, Ca, Al and Si, where a content of Ca is less than 9.0 mass %, a content of Al is equal to or more than 0.5 mass % but less than 5.7 mass %, a content of Si is equal to or less than 1.3 mass % and Al+8Ca≥20.5%.
-
公开(公告)号：US10751793B2
公开(公告)日：2020-08-25
申请号：US15322539
申请日：2015-06-24
发明人： Boris Bronfin , Nir Nagar , Nir Moscovitch , Meir Cohen
摘要： The invention provides magnesium alloys for high temperature applications that combine excellent castability with superior corrosion resistance, and with good creep resistance, ductility, impact strength, and thermal conductivity. The alloys contain mainly Al, La, Ce, and Mn, and are particularly useful for high-pressure die casting process.
-
公开(公告)号：US10604827B2
公开(公告)日：2020-03-31
申请号：US15835538
申请日：2017-12-08
发明人： Prashant N. Kumta , Da-Tren Chou , Daeho Hong , Partha Saha
IPC分类号： C22C23/06 , C22C1/02 , B22D21/00 , A61F2/02 , A61L27/04 , C22C1/06 , A61K31/7036 , C22C23/00 , C22C23/04 , A61L27/58 , A61K31/397 , A61L31/02 , A61L31/14
摘要： The invention relates to biodegradable, metal alloy-containing compositions, methods for their preparation and applications for their use. The compositions include magnesium and other components, such as yttrium, calcium, silver, cerium, and zirconium; or zinc, silver, cerium, and zirconium; or aluminum, zinc, calcium, manganese, silver, yttrium; or strontium, calcium, zinc. The compositions are prepared by vacuum induction/crucible melting together the components and casting the melted mixture in a preheated mild steel/copper mold. In certain embodiments, the compositions of the invention are particularly useful for forming medical devices for implantation into a body of a patient.
-
公开(公告)号：US10589005B2
公开(公告)日：2020-03-17
申请号：US15068132
申请日：2016-03-11
摘要： A bioerodible endoprosthesis includes a bioerodible body including an alloy comprising at least 85 weight percent magnesium and at least one high-melting-temperature element having a melting temperature of greater than 700° C. The alloy has a microstructure including equiaxed magnesium-rich phase grains and optionally high-melting-temperature intermetallic phases. The equiaxed magnesium-rich phase grains have an average grain diameter of less than or equal to 10 microns. High-melting-temperature intermetallic phases, if present, can have an average longest dimension of 3 microns or less.
-
公开(公告)号：US10518001B2
公开(公告)日：2019-12-31
申请号：US15352111
申请日：2016-11-15
发明人： Jacob Drew Edick
摘要： A bioerodible endoprosthesis includes a bioerodible magnesium alloy including between 50 weight percent and 92 weight percent magnesium, at least 5.5 weight percent in sum of one or more elements selected from the group consisting of Ho, Er, Lu, Tb and Tm, and at least 2.0 weight percent in sum of one or more elements selected from the group consisting of Y, Nd and Gd. The bioerodible magnesium alloy has a microstructure including equiaxed Mg-rich solid solution-phase grains having an average grain diameter of less than or equal to 15 microns and second-phase precipitates and/or ceramic nanoparticles in grain boundaries between the equiaxed Mg-rich solid solution-phase grains. The secondary-phase precipitates or ceramic nanoparticles have an average longest dimension of 2.0 micron or less. The microstructure can be produced by one or more equal-channel high-strain processes.
-
9.发明申请公开(公告)号：US20190194782A1
公开(公告)日：2019-06-27
申请号：US16277173
申请日：2019-02-15
发明人： Michele Manuel , Josephine Allen , Jordan P. Ball , Harpreet Singh Brar , Ida Svensson BERGLUND
CPC分类号： C22C23/00 , A61L27/047 , A61L27/306 , A61L27/58 , A61L2400/18 , A61L2420/02 , C22C1/0408 , C22C23/06 , C22F1/06
摘要： Disclosed herein is an article comprising a metal alloy; where the metal alloy comprises a base metal, a second element and a third element; where the base metal is magnesium, calcium, strontium, zinc, or a combination thereof; where the second element is chemically different from the third element; and where the second element and the third element are scandium, yttrium, gadolium, cerium, neodymium, dysporium, or a combination thereof; and a protective layer disposed upon the metal alloy and is reactively bonded to the metal alloy; where the protective layer comprises a base non-metallic derivative, a second non-metallic derivative and a third non-metallic derivative of metals present in the metal alloy; and where the base non-metallic derivative, the second non-metallic derivative and the third non-metallic derivative are all chemically different from one another.
-
10.发明授权公开(公告)号：US10077492B2
公开(公告)日：2018-09-18
申请号：US14624372
申请日：2015-02-17
发明人： Li Li , Yufeng Zheng , Zhen Li , Qingfu Chen , Diantao Zhang , Jingtao Li
摘要： The present invention provides an ultrafine-grained profile of twin-crystal wrought magnesium alloys, preparation process and use of the same. In the process, raw materials of magnesium alloys are firstly smelted and cast, and are subjected to solution treatment at 300˜500° C.; then a preform is pre-deformed, so that a great amount of twin crystal microstructure forms in the magnesium alloys and the grain size of not larger than 100 μm is achieved; subsequently continuous ECAP process is performed at 200˜350° C., and the die is replaced in according to requirement so as to obtain the desired profile. The ultrafine-grained profile of magnesium alloys prepared in the invention has the grain sizes of from 100 to 450 nm, the tensile strength of 300˜400 MPa, and the elongation of 20˜35%. The length of the profile can be more than 10 m, meeting the needs of continuous production.
-
-
-
-
-
-
-
-
-
搜索结果
200 条记录 (耗时 0.025 秒)