Abstract:
PROBLEM TO BE SOLVED: To provide a method for fabricating a metallic article without any melting.SOLUTION: A metallic article (20) made of metallic constituent elements is fabricated from a mixture of nonmetallic precursor compounds of the metallic constituent elements. The mixture of nonmetallic precursor compounds is chemically reduced to produce an initial metallic material, without melting the initial metallic material. A consolidation process may be performed by a viable technology. A preferable technology includes hot isostatic press, forging, pressure forming and sintering, and container extrusion of the initial metallic material. The material is consolidated to produce the consolidated metallic article (20). The consolidation is preferably performed by hot isostatic press, forging, pressure forming and sintering, and container extrusion of the initial metallic material.
Abstract:
PROBLEM TO BE SOLVED: To provide an article having a titanium-base metallic composition, which is, in more detail, the article made from the titanium-base composition wherein titanium boride particles are dispersed. SOLUTION: The article (20) has a matrix (22) containing more titanium than any other elements, and contains a microscale compound material (21) having the matrix (22) wherein the titanium boride particles (24, 25) are dispersed. The maximum size of at least approximately 50 volume% of the titanium boride particles (24, 25) is smaller than approximately 2 μm. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a dispersion-strengthened material containing nanoparticles that are uniformly dispersed in a matrix phase. SOLUTION: The method includes adding nanoparticles (12) and a molten material (14) to a container (10) to form a pool within the container and rotating the container to create a convection vortex in the pool. The convection vortex causes the nanoparticles to be incorporated into the molten material so as to yield a molten composite material (18), and further is sufficient to cause the molten composite material (18) to be ejected from the container. The molten composite material (18) is then cooled to form a solid composite body (24) comprising a uniform dispersion of the nanoparticles. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide articles having titanium-base metallic compositions and, more particularly, articles made of titanium-base compositions having titanium boride particles dispersed therein.SOLUTION: An article (20) includes a microscale composite material (21) having a matrix (22) with more titanium than any other element, and a dispersion of titanium boride particles (24, 25) in the matrix (22). At least about 50 vol.% of the titanium boride particles (24, 25) have a maximum dimension of less than about 2 μm.
Abstract:
PROBLEM TO BE SOLVED: To prepare a metallic alloy article having other additive constituents without any melting. SOLUTION: The method for preparing an article (20) of a base metal alloyed with an alloying element comprises the steps of preparing a compound mixture by the steps of providing a chemically reducible nonmetallic base-metal precursor compound of a base metal, providing a chemically reducible nonmetallic alloying-element precursor compound of an alloying element, and thereafter mixing the base-metal precursor compound and the alloying-element precursor compound to form a compound mixture. The compound mixture is thereafter reduced to a metallic alloy, without melting the metallic alloy. The step of preparing or the step of chemically reducing includes the step of adding an other additive constituent. The metallic alloy is thereafter consolidated to produce a consolidated metallic article (20), without melting the metallic alloy and without melting the consolidated metallic article (20). COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To prepare a metallic-alloy article having another additive constituent, without melting of the metallic alloy.SOLUTION: A method for preparing an article (20) of a base metal alloyed with an alloying element includes the steps of preparing a compound mixture by the steps of providing a chemically reducible nonmetallic base-metal precursor compound of a base metal, providing a chemically reducible nonmetallic alloying-element precursor compound of an alloying element, and thereafter mixing the base-metal precursor compound and the alloying-element precursor compound to form a compound mixture. The compound mixture is thereafter reduced to a metallic alloy, without melting the metallic alloy. The step of chemically reducing includes the step of adding another additive constituent. The metallic alloy is thereafter consolidated to produce a consolidated metallic article (20), without melting the metallic alloy and without melting the consolidated metallic article (20).
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a titanium metallic composition having titanium boride particles dispersed therein. SOLUTION: An article made of constituent elements is prepared by furnishing at least one nonmetallic precursor compound, wherein all of the nonmetallic precursor compounds collectively contain the constituent elements. The constituent elements include a titanium-base metallic composition, boron present at a level greater than its room-temperature solid solubility limit, and, optionally, a stable-oxide-forming additive element present at a level greater than its room-temperature solid solubility limit. The precursor compounds are chemically reduced to produce a material comprising a titanium-base metallic composition having titanium boride particles therein, without melting the titanium-base metallic composition. The titanium-base metallic composition having the titanium boride particles therein is consolidated without melting. COPYRIGHT: (C)2006,JPO&NCIPI