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公开(公告)号：US20230063778A1
公开(公告)日：2023-03-02
申请号：US17894761
申请日：2022-08-24
发明人： John C. FANNING
摘要： An alpha-beta titanium alloy and method of manufacture includes forming an alpha-beta product from a titanium alloy with a composition in weight percent (wt. %) including 5.7-7.5 wt. % Al, 0.8-4.2 wt. % Mo, 0.0-3.0 wt. % Nb, 0.1-3.5 Sn, 0.1-3.0 wt. % Zr, 0.1-0.35 wt. % Si, 0.05-0.25 wt. % O, with the remainder being Ti and incidental impurities, and then heat treating the alpha-beta product with a first heat treatment step including a first temperature and a first time, a second heat treatment step including a second temperature and a second time, and a third heat treatment step including a third temperature less than the second temperature and a third time greater than the second time.
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公开(公告)号：US20190169712A1
公开(公告)日：2019-06-06
申请号：US16182110
申请日：2018-11-06
发明人： Roger Owen THOMAS , Paul GARRATT , John FANNING
摘要： A titanium alloy having high strength, fine grain size, and low cost and a method of manufacturing the same is disclosed. In particular, the titanium alloy offers a room temperature longitudinal low cycle fatigue (LCF) maximum stress of at least about 950 MPa over about 20,000 cycles and a room temperature transverse low cycle fatigue (LCF) maximum stress of at least about 970 MPa over about 25,000 cycles. The titanium alloy is particularly useful for a multitude of applications including components of aircraft engines. The titanium alloy comprises, in weight percent, about 6.0 to about 6.7% aluminum, about 1.4 to about 2.0% vanadium, about 1.4 to about 2.0% molybdenum, about 0.20 to about 0.42% silicon, about 0.17 to about 0.23% oxygen, maximum about 0.24% iron, maximum about 0.08% carbon and balance titanium with incidental impurities.
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公开(公告)号：US20190112688A1
公开(公告)日：2019-04-18
申请号：US16163157
申请日：2018-10-17
摘要： A vacuum arc remelting system for forming an ingot from an electrode is provided that includes a crucible assembly configured to accommodate the electrode and the ingot, an electromagnetic energy source arranged about the crucible assembly, and a lift mechanism operable to move the electromagnetic energy source along a longitudinal axis of the crucible assembly. A magnetic field generated by the electromagnetic energy source is localized to an arc region during remelting, and in one form, the electromagnetic energy source is a coil assembly having a magnetic core and a plurality of coil pairs wrapped around the core, wherein the coil assembly is operable to generate a magnetic field from the coil based on electric current flowing in the plurality of coil pairs.
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公开(公告)号：US20180320251A1
公开(公告)日：2018-11-08
申请号：US16032681
申请日：2018-07-11
发明人： Phani GUDIPATI , Yoji KOSAKA
摘要： A cold rollable beta titanium alloy is provided by the present disclosure that exhibits excellent tensile strength, and creep and oxidation resistance at elevated temperatures. In one form, the beta titanium alloy includes molybdenum between 13.0 wt. % to 20.0 wt. %, niobium between 2.0 wt. % to 4.0 wt. %, silicon between 0.1 wt. % to 0.4 wt. %, aluminum between 3.0 wt. % to 5.0 wt. %, zirconium greater than 0.0 wt. % and up to 3.0 wt. %, tin up to 5.0 wt. %, oxygen up to 0.25 wt. %, and a balance of titanium and incidental impurities. Additionally, the ranges for each element satisfies the conditions of: 6.0 wt. %≤X wt. %≤7.5 wt. %; and (i) 3.5 wt. %≤Y wt. %≤5.15 wt. %, where (ii) X wt. %=aluminum+tin/3+zirconium/6+10*(oxygen+nitrogen+carbon), and Y wt. %=aluminum+silicon*(zirconium+tin).
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5.发明申请公开(公告)号：US20180291492A1
公开(公告)日：2018-10-11
申请号：US16008609
申请日：2018-06-14
发明人： Roger Owen THOMAS , Yoji KOSAKA , Steven JAMES , Paul GARRATT
摘要： Titanium alloys formed into a part or component used in applications where a key design criterion is the energy absorbed during deformation of the part when exposed to impact, explosive blast, and/or other forms of shock loading is described. The titanium alloys generally comprise a titanium base with added amounts of aluminum, an isomorphous beta stabilizing element such as vanadium, a eutectoid beta stabilizing element such as silicon and iron, and incidental impurities. The titanium alloys exhibit up to 70% or more improvement in ductility and up to a 16% improvement in ballistic impact resistance over a Ti-6Al-4V alloy, as well as absorbing up to 50% more energy than the Ti-6Al-4V alloy in Charpy impact tests. A method of forming a part that incorporates the titanium alloys and uses a combination of recycled materials and new materials is also described.
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公开(公告)号：US10000838B2
公开(公告)日：2018-06-19
申请号：US14606310
申请日：2015-01-27
发明人： Roger Thomas , Yoji Kosaka , Steven James , Paul Garratt
CPC分类号： C22F1/183 , C22C14/00 , F04D29/023 , F04D29/522
摘要： Titanium alloys formed into a part or component used in applications where a key design criterion is the energy absorbed during deformation of the part when exposed to impact, explosive blast, and/or other forms of shock loading is described. The titanium alloys generally comprise a titanium base with added amounts of aluminum, an isomorphous beta stabilizing element such as vanadium, a eutectoid beta stabilizing element such as silicon and iron, and incidental impurities. The titanium alloys exhibit up to 70% or more improvement in ductility and up to a 16% improvement in ballistic impact resistance over a Ti-6Al-4V alloy, as well as absorbing up to 50% more energy than the Ti-6Al-4V alloy in Charpy impact tests. A method of forming a part that incorporates the titanium alloys and uses a combination of recycled materials and new materials is also described.
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7.发明授权公开(公告)号：US10000826B2
公开(公告)日：2018-06-19
申请号：US15066193
申请日：2016-03-10
发明人： Yoji Kosaka
摘要： A high strength alpha-beta alloy is provided that has improved high temperature oxidation resistance, high temperature strength and creep resistance, and improved superplasticity. In one form, the alloy comprises about 4.5 wt % to about 5.5 wt % aluminum, about 3.0 wt % to about 5.0 wt % vanadium, about 0.3 wt % to about 1.8 wt % molybdenum, about 0.2 wt % to about 1.2 wt % iron, about 0.12 wt % to about 0.25 wt % oxygen, about 0.10 wt % to about 0.40 wt % silicon, with the balance titanium and incidental impurities, with each being less than about 0.1 wt % and about 0.5 wt %, respectively, in total.
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8.发明申请公开(公告)号：US20170260607A1
公开(公告)日：2017-09-14
申请号：US15066193
申请日：2016-03-10
发明人： Yoji Kosaka
IPC分类号： C22C14/00
摘要： A high strength alpha-beta alloy is provided that has improved high temperature oxidation resistance, high temperature strength and creep resistance, and improved superplasticity. In one form, the alloy comprises about 4.5 wt % to about 5.5 wt % aluminum, about 3.0 wt % to about 5.0 wt % vanadium, about 0.3 wt % to about 1.8 wt % molybdenum, about 0.2 wt % to about 1.2 wt % iron, about 0.12 wt % to about 0.25 wt % oxygen, about 0.10 wt % to about 0.40 wt % silicon, with the balance titanium and incidental impurities, with each being less than about 0.1 wt % and about 0.5 wt %, respectively, in total.
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公开(公告)号：US20190169713A1
公开(公告)日：2019-06-06
申请号：US16182122
申请日：2018-11-06
发明人： Roger Owen THOMAS , Paul GARRATT , John FANNING
摘要： A method of manufacturing a titanium alloy part with a composition, in weight %, of aluminum from about 6.0 to about 6.7; vanadium from about 1.4 to about 2.0; molybdenum from about 1.4 to about 2.0; silicon from about 0.20 to about 0.35; oxygen from about 0.18 to about 0.23; iron from about 0.16 to about 0.24; carbon from about 0.02 to about 0.06; and balance titanium, is provided. The method includes a first heat treatment on an ingot of the titanium alloy, forging of the ingot to break down the cast structure, a second heat treatment on the forged ingot, rolling the forged ingot to a plate, bar or billet, and annealing the plate, bar or billet below the beta transus temperature of the titanium alloy. The first and second heat treatments are between 40 and 200° C. and between 30 and 100° C. below the beat transus temperature, respectively.
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公开(公告)号：US11708630B2
公开(公告)日：2023-07-25
申请号：US16583036
申请日：2019-09-25
发明人： Roger Owen Thomas , Steven James , Paul Garratt , Matthew Thomas
摘要： A titanium alloy composition is provided. In weight percent (wt. %), the alloy includes 5.7 to 8.0% vanadium, 0.5 to 1.75% aluminum, 0.25 to 1.5% iron, 0.1 to 0.2% oxygen, up to 0.15% silicon, up to 0.1% carbon and less than 0.03% nitrogen is provided. In one form, the titanium alloy has a 0.2% yield strength between 600 to 850 MPa, an ultimate tensile strength between 700 to 950 MPa, a percent elongation to failure between 20 to 30%, a percent reduction in area between 40 to 80%, a Charpy U-notch impact energy between 30 to 70 J, and/or a Charpy V-notch impact energy between 40 to 150 J.
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