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High strength nickel-based amorphous alloyRelated Patent Categories: Metal Treatment, Stock, Amorphous, I.e., GlassyHigh strength nickel-based amorphous alloy description/claimsThe Patent Description & Claims data below is from USPTO Patent Application 20070034303, High strength nickel-based amorphous alloy. Brief Patent Description - Full Patent Description - Patent Application Claims
CROSS-REFERENCE TO RELATED APPLICATIONS [0001] The present application is a continuation of provisional U.S. application Ser. No. 60/508,882 filed on Oct. 7, 2003, the entire contents of which are incorporated herein by reference. BACKGROUND OF THE INVENTION [0002] 1. Field of the Invention [0003] This invention relates to the preparation of high precision alloy, and in particular, high-strength nickel-based amorphous compositions for fabrication of glass-coated microwires. [0004] 2. Description of the Related Art [0005] It has been the tendency in modern technologies to demand new materials and processes for their production from material engineering. Strengthening of the structural materials by reinforcing them with high strength fibers or wires is one of the problems of the material engineering in the production of elements and structures operating under harsh environment and exploitation conditions. [0006] The modern methods for strengthening of metals and alloys employ various treatments, e.g., strain hardening, thermal and thermal-mechanical treatment, precipitation hardening, martensite reinforcement, etc. Such treatments allow to obtain, for example, steels and alloys having tensile strength in the range of 1000-3000 MPa. In particular, the forming in the metal matrix such strengthening phases as .delta.-phase (Ni--Mo), .sigma.-phase and .rho.-phase (Cr.sub.18Mo.sub.42Ni.sub.40) has a great potential for obtaining high strength materials. [0007] Known techniques for casting microwires in glass insulation enable to form an amorphous homogeneous structure and the strengthening phases in the material, and thereby increase the strength characteristic up to 3000-4500 MPa. The high strength is, inter alia, attained by providing a high degree of the melt oversaturation by applying reinforcing components and "freezing" the alloy in this condition at quenching the material from the liquid phase with the cooling rate of up to 3.times.10.sup.6 K/s. [0008] According to the microwire casting techniques, a glass tubing containing the desired metal batch is heated to a temperature sufficient to melt the metal and soften the glass. In general, the heating is obtained via electromagnetic induction for melting the metal which, in turn, softens the glass. The outer glass shell is then drawn out as fine as desired. As a result, two coaxial flows arise: one of the melted metal in the center and another of softened glass around the metal one. After leaving the heating zone, both flows pass through a water stream, for cooling and solidifying. The result is a continuous microwire with the metal being continuously cast as a core covered with a glass coating. [0009] U.S. Pat. No. 6,325,868 discloses a nickel-based amorphous alloy having a superior amorphous phase-forming ability. This alloy contains nickel, zirconium and titanium as main constituent elements along with additional elements, such as Si or P. Also, at least one kind of element selected from the group consisting of V, Cr, Mn, Cu, Co, W, Sn, Mo, Y, C, B, P, Al can be added to the alloy composition in the range of content of 2 to 15 atomic %. [0010] One of the drawbacks of this alloy is that it contains a rather large amount of such elements as Ti and Zr, i.e., from 40 to 60%, which are easy oxidizable metals. In this case the alloy drop can turn into oxide during the microwire casting process and prevent microwire manufacture. [0011] U.S. Pat. No. 4,668,310 discloses amorphous alloys having high strength and hardness. The general composition formula of these alloys is T.sub.aX.sub.bZ.sub.cM.sub.d, where [0012] T is at least one of Fe, Co and Ni; [0013] X is at least one of Zr, Ti, Hf and Y; [0014] Z is at least one of B, C, Si, Al, Ge, Bi, S, P; [0015] M is at least one of Mo, Cr, W, V, Nb, Ta, Cu, Mn, Zn, Sb, Sn, Be, Mg, Pd, Pt, Ru, Os, Rh, Ir, Ce, La, Pr, Nd, Sm, Eu, Gd, Th, Dy; and [0016] a is 70-98 atomic %, [0017] b is from 5 to 30 atomic %, [0018] c is from 0 to 0.5 atomic %, and [0019] d is not more than 20 atomic %, [0020] and sum of a, b, c, and d is 100 atomic %. [0021] One of the disadvantages of this alloy is in the fact that it is not suitable for microwire casting, owing to the deficiency of such elements as B and Si (less than 0.5%). For such contents of B and Si, the wetting ability of silica-boride glasses by the metal melt is not sufficient for providing a mass microwire manufacturing process. Moreover, the content of such elements as Cr and Mo does not exceed 20%, that prevents from forming the high strength .rho.-phase. [0022] USSR inventor's certificate No. 428,028 discloses an alloy for casting of the microwire. This alloy was developed by taking into account the specific conditions of physical and chemical interaction between the metal melt and glass during microwire casting process. Alloy has the following content, by weight %: Continue reading about High strength nickel-based amorphous alloy... Full patent description for High strength nickel-based amorphous alloy Brief Patent Description - Full Patent Description - Patent Application Claims Click on the above for other options relating to this High strength nickel-based amorphous alloy patent application. ###  How KEYWORD MONITOR works... a FREE service from FreshPatents1. Sign up (takes 30 seconds). 2. Fill in the keywords to be monitored. 3. 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