A watch case (6) including a rotating bezel (1), a middle (3) and a connecting spring (2) between the rotating bezel (1) and the middle (3), the connecting spring (2) being accommodated within a first groove (7) formed in an external wall (3a) of the middle (3) and within a second groove (8) formed in an internal wall (1 a) of the rotating bezel (1), the first and second grooves (7,8) being preferably arranged opposite one another. The connecting spring (2) is made of an alloy with memory of shape.

An overlapping and progressive forming method for a high-performance multi-element NiAl-based alloy tubular part, including: winding continuously flexible substrates of Ni and Al, and alloying coating continuously or selectively along a width direction or a rolling direction to obtain coated flexible substrates; winding continuously the coated flexible substrates on an outer surface of a core roller according to a sequence of Ni above and Al below to form a Ni/Al laminated structure having a plurality of layers with an outermost layer being a Ni layer, and consolidating with ultrasonic with assistance of a pulse current to combine the continuously wound flexible substrates into a laminated tube blank; and placing the laminated tube blank into a mold, applying a pulse current to both ends of the laminated tube blank for hot fluid high-pressure forming, and synthesizing in-situ to prepare the tubular part with assistance of the pulse current.

The present invention relates to a nickel-based super heat resistant alloy and a method of manufacturing the same. In the nickel-based super heat resistant alloy according to the present invention, an amount of solid solution strengthening elements (chromium, cobalt, molybdenum, or tantalum) is adjusted to improve a mechanical property, such as a creep property, at high temperatures, and aluminum or titanium is included in a predetermined amount to improve a corrosion property. The nickel-based super heat resistant alloy has excellent elongation, strength, and creep properties at normal temperature and high temperatures, and thus it is possible to manufacture parts of, by way of non-limiting example, a thermoelectric power plant, an aircraft, or a very high temperature reactor in various shapes on a large scale.

The present invention relates to a ball game racket with strings that comprise at least one string comprising a superelastic material.

A thermal spray powder is provided that contains, as constituent elements, a first element selected from W and Mo; a second element selected from Co, Ni, and Fe; a third element selected from C and B; and a fourth element selected from Al and Mg. The amount of the second element in the thermal spray powder is 20% by mole or greater. The mole ratio of the fourth element to the second element in the thermal spray powder is 0.05 or greater and 0.5 or less. The thermal spray powder has a crystal phase containing Co, Ni, or Fe; W; and C or a crystal phase containing Co, Ni, or Fe; W or Mo; and B. In an X-ray diffraction spectrum of the thermal spray powder, the peak intensity attributed to Co, Ni, or Fe is at most 0.1 times the largest peak intensity in the same X-ray diffraction spectrum.

Provided is a nickel-based coating composition containing cobalt, chromium, aluminum, tantalum, and nickel. The coating composition has a three phase γ, γ′, β microstructure wherein at least 5 volume % of the coating composition is present in the β phase. Also provided are coating systems containing the coating composition, articles having the coating composition or coating system, and methods for protecting nickel-based superalloy substrates using the coating composition or coating system.

The present disclosure relates to new materials comprising Al, Co, Ni and Ti. The new materials may realize a single phase field of a face-centered cubic (fcc) solid solution structure immediately below the solidus temperature of the material. The new materials may include at least one precipitate phase and have a solvus temperature of at least 1100° C. The new materials may include 2.1-8.4 wt. % Al, 4.7-60.6 wt. % Co, 29.6-89.3 wt. % Ni, and 3.9-9.4 wt. % Ti. In one embodiment, the precipitate is selected from the group consisting of the L1.sub.2 phase, the B2 phase, the Ni.sub.3Ti phase, and combinations thereof. The new alloys may realize improved high temperature properties.

Polycrystalline compacts include a polycrystalline material comprising a plurality of inter-bonded grains of hard material, and a metallic material disposed in interstitial spaces between the inter-bonded grains of hard material. At least a portion of the metallic material comprises a metal alloy that includes two or more elements. A first element of the two or more elements comprises at least one of cobalt, iron, and nickel. A second element of the two or more elements comprises at least one of dysprosium, yttrium, terbium, gadolinium, germanium, samarium, neodymium, and praseodymium. The metal alloys may comprise eutectic or near-eutectic compositions, and may have relatively low melting points. Cutting elements and earth-boring tools include such polycrystalline compacts. Methods include the formation of such polycrystalline compacts, cutting elements, and earth-boring tools.

The invention relates to a rare earth based hydrogen storage alloy, represented by the general formula (I):

RE.sub.xY.sub.yNi.sub.z-a-b-cMn.sub.aAl.sub.bM.sub.cZr.sub.ATi.sub.B  (I)

wherein RE denotes one or more element(s) selected from La, Ce, Pr, Nd, Sm, Gd; M denotes one or more element(s) selected from Cu, Fe, Co, Sn, V, W. The alloy has favorable pressure-composition-temperature characteristic, high hydrogen storage capacity, high electrochemical capacity. The alloy doesn't contain magnesium element, and the preparation process of the alloy is easy and safe.

This disclosure includes the description of a braze alloy composition. The braze composition contains nickel, about 5% by weight to about 25% by weight germanium; and about 1% by weight to about 4% by weight boron. The composition has an amorphous structure, and is free of silicon.