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公开(公告)号：US11572609B2
公开(公告)日：2023-02-07
申请号：US16098538
申请日：2017-05-04
摘要： Metallic matrix composites include a high strength titanium aluminide alloy matrix and an in situ formed aluminum oxide reinforcement. The atomic percentage of aluminum in the titanium aluminide alloy matrix can vary from 40% to 48%. Included are methods of making the metallic matrix composites, in particular, through the performance of an exothermic chemical reaction. The metallic matrix composites can exhibit low porosity.
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公开(公告)号：US11827959B2
公开(公告)日：2023-11-28
申请号：US18079934
申请日：2022-12-13
IPC分类号： C22C1/05 , C22C29/06 , C22C29/12 , C22C29/14 , C22C29/16 , C22C45/08 , C22C29/18 , C22C1/059
CPC分类号： C22C29/18 , C22C1/058 , C22C1/059 , C22C29/06 , C22C29/12 , C22C29/14 , C22C29/16 , C22C45/08
摘要： Metallic matrix composites are synthesized by mixing a first reactant, a second reactant and a nucleator compound to obtain a reaction mixture, and heating the reaction mixture to an auto-activation temperature to initiate a self-propagating high-temperature synthesis reaction between the first and second reactants. The metallic matrix composite can include a metallic matrix and an in situ formed reinforcement. The reinforcement can be formed of discrete particles substantially uniformly dispersed within the metallic matrix. Each of the particles can have a reinforcement constituent disposed about a core formed of the nucleator compound.
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3.发明公开公开(公告)号：US20230201923A1
公开(公告)日：2023-06-29
申请号：US18111045
申请日：2023-02-17
CPC分类号： B22F3/23 , B22F1/05 , B22F2304/10 , B22F2998/10 , B22F2302/253 , B22F2301/205
摘要： Articles are manufactured using self-propagating high-temperature synthesis (SHS) reactions. Particulates including reactants can be blended to form a particulate blend. The particulate blend can be preformed. The preform article can be heated to a pre-heat temperature being below an auto-activation temperature and above a minimum compression activated synthesis temperature. Compressive stress can be exerted on the preform article at the pre-heat temperature to initiate the SHS reaction between the reactants and thereby form a product metallic compound. At approximately peak temperature, a flow stress of the product metallic compound can be exceeded to substantially reduce porosity and thereby form a shaped substantially dense article.
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4.发明公开公开(公告)号：US20230151463A1
公开(公告)日：2023-05-18
申请号：US18092961
申请日：2023-01-04
CPC分类号： C22C32/0031 , B22F3/23 , C22C1/0458 , C22C1/047 , C22C14/00 , C22C21/003 , C22C32/0036 , C22C1/053
摘要： Metallic matrix composites include a high strength titanium aluminide alloy matrix and an in situ formed aluminum oxide reinforcement. The atomic percentage of aluminum in the titanium aluminide alloy matrix can vary from 40% to 48%. Included are methods of making the metallic matrix composites, in particular, through the performance of an exothermic chemical reaction. The metallic matrix composites can exhibit low porosity.
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5.发明授权公开(公告)号：US11612935B2
公开(公告)日：2023-03-28
申请号：US16098527
申请日：2017-05-04
摘要： Articles are manufactured using self-propagating high-temperature synthesis (SHS) reactions. Particulates including reactants can be blended to form a particulate blend. The particulate blend can be preformed. The preform article can be heated to a pre-heat temperature being below an auto-activation temperature and above a minimum compression activated synthesis temperature. Compressive stress can be exerted on the preform article at the pre-heat temperature to initiate the SHS reaction between the reactants and thereby form a product metallic compound. At approximately peak temperature, a flow stress of the product metallic compound can be exceeded to substantially reduce porosity and thereby form a shaped substantially dense article.
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公开(公告)号：US11555230B2
公开(公告)日：2023-01-17
申请号：US16098533
申请日：2017-05-04
摘要： Metallic matrix composites are synthesized by mixing a first reactant, a second reactant and a nucleator compound to obtain a reaction mixture, and heating the reaction mixture to an auto-activation temperature to initiate a self-propagating high-temperature synthesis reaction between the first and second reactants. The metallic matrix composite can include a metallic matrix and an in situ formed reinforcement. The reinforcement can be formed of discrete particles substantially uniformly dispersed within the metallic matrix. Each of the particles can have a reinforcement constituent disposed about a core formed of the nucleator compound.
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