A gas-shielded arc welding method includes welding a steel plate having a tensile strength of 780 MPa or more while feeding a consumable electrode via a welding torch and flowing a shielding gas. The consumable electrode includes, in mass %, C: 0 to 0.20%, Si: 0 to 0.50%, Mn: 0 to 0.50%, Cr: 1.00% to 9.00%, S: 0.0020% to 0.0600%, and Ni: 0 to 0.50%. The shielding gas includes, in vol. %, at least one of CO.sub.2 and O.sub.2: 1% to 15% in total, with the remainder being Ar and unavoidable impurities. Welding is performed under the condition satisfying the relationship of 1{0.05[CO.sub.2+O.sub.2]}+[Cr]8.3, and [Cr] represents the content of Cr in the consumable electrode, and [CO.sub.2+O.sub.2] represents a total content of at least one of CO.sub.2 and O.sub.2 in the shielding gas.

A gas-shielded arc welding method includes welding a steel plate having a tensile strength of 780 MPa or more while feeding a consumable electrode via a welding torch and flowing a shielding gas. The consumable electrode includes, in mass %, C: 0 to 0.20%, Si: 0 to 0.50%, Mn: 0 to 0.50%, Cr: 1.00% to 9.00%, S: 0.0020% to 0.0600%, and Ni: 0 to 0.50%. The shielding gas includes, in vol. %, at least one of CO.sub.2 and O.sub.2: 1% to 15% in total, with the remainder being Ar and unavoidable impurities. Welding is performed under the condition satisfying the relationship of 1{0.05[CO.sub.2+O.sub.2]}+[Cr]8.3, and [Cr] represents the content of Cr in the consumable electrode, and [CO.sub.2+O.sub.2] represents a total content of at least one of CO.sub.2 and O.sub.2 in the shielding gas.

The present invention relates to a brazing ribbon and a method for manufacturing same, and comprises a release film, a seed layer formed on an upper surface of the release film, and a brazing alloy layer formed on an upper surface of the seed layer and is manufactured into a ribbon. The present invention is advantageous in that, since a brazing filler is prepared in advance and then attached to a substrate in the form of a strip, time for attaching the brazing filler can be saved, and the convenience of attaching the brazing filler can be improved.

An assembly comprising: two ceramic bodies, which are joined by means of a joint of an active hard solder, or braze, wherein the active hard solder, or braze, has a continuous core volume, which is spaced, in each case, from the ceramic bodies by at least 1 m, and an average composition C.sub.K with a liquidus temperature T.sub.l(C.sub.K), wherein the composition C.sub.K has a coefficient of thermal expansion (C.sub.K), wherein (C.sub.K)=m.Math.(K), wherein m1.5, especially m1.3 and preferably m1.2, wherein (K) is the average coefficient of thermal expansion of the ceramic material of the ceramic bodies, wherein the joint has boundary layers, which border on the ceramic body, wherein at least one of the boundary layers, which lies outside of the core volume, has an average composition C.sub.B with a liquidus temperature T.sub.l(C.sub.B), which lies not less than 50 K, preferably not less than 100 K, and especially preferably not less than 200 K, under the liquidus temperature T.sub.l(C.sub.K) of the average composition C.sub.K of the core volume.

An assembly comprising: two ceramic bodies, which are joined by means of a joint of an active hard solder, or braze, wherein the active hard solder, or braze, has a continuous core volume, which is spaced, in each case, from the ceramic bodies by at least 1 m, and an average composition C.sub.K with a liquidus temperature T.sub.l(C.sub.K), wherein the composition C.sub.K has a coefficient of thermal expansion (C.sub.K), wherein (C.sub.K)=m.Math.(K), wherein m1.5, especially m1.3 and preferably m1.2, wherein (K) is the average coefficient of thermal expansion of the ceramic material of the ceramic bodies, wherein the joint has boundary layers, which border on the ceramic body, wherein at least one of the boundary layers, which lies outside of the core volume, has an average composition C.sub.B with a liquidus temperature T.sub.l(C.sub.B), which lies not less than 50 K, preferably not less than 100 K, and especially preferably not less than 200 K, under the liquidus temperature T.sub.l(C.sub.K) of the average composition C.sub.K of the core volume.

A steam turbine rotor blade achieving both abrasion resistance and reliability, and a method for manufacturing a steam turbine rotor blade capable of obtaining such a steam turbine rotor blade are provided. A steam turbine rotor blade according to the invention is characterized by including a blade base material and an erosion shield formed on a surface of the blade base material, wherein the blade base material is composed of a titanium alloy, and the erosion shield is composed of a weld overlay layer including a parent phase composed of pure titanium in which a metal element is solid-dissolved or a titanium alloy in which a metal element is solid-dissolved, and a hard phase dispersed in the parent phase.

Turbine buckets include a pressure side, a suction side opposite the pressure side, and a bucket squealer tip attached to the pressure side and the suction side. The bucket squealer tip includes a plurality of high hot hardness shroud-cutting deposits deposited on its exterior surface that have a hardness of at least about 1100 kg mm.sup.2 and a melting temperature of at least about 1500 C.

A hardfacing disposable on a surface of a component, such as a wellsite component, is disclosed. The hardfacing comprises a surface portion and a bottom portion with a segregation line defined therebetween. The surface portion and the bottom portion each include a matrix phase including a matrix composition made of a metal alloy and a hard phase distributed in the matrix phase. The hard phase may include an abrasion-resistant composition made of a hard material (e.g., vanadium carbide). The surface portion has a first concentration of the abrasion-resistant composition and the bottom portion has a second concentration of the abrasion-resistant composition with the first concentration being greater than the second concentration such that a wear resistant surface is defined on the surface of the component.

A fabrication method of a supporting unit supporting a substrate is provided. The fabrication method includes providing a supporting plate that is made of a non-conductive material and configured to support the substrate, providing a base plate that is disposed under the supporting plate and made of a material containing a conductive material, and forming a first metal film on a top surface of the base plate and bonding the supporting plate with the base plate through a brazing process.

A flux-cored wire for gas shielded arc welding includes C: 0.03 to 0.09%, Si: 0.1 to 0.6%, Mn: 1.3 to 3.0%, Ti: 0.05 to 0.50%, B: 0.002 to 0.015%, and Al.sub.2O.sub.3 converted value: 0.4 to 1.0%, as the total content in the steel sheath and the flux in mass % relative to the total mass of the wire; and TiO.sub.2 converted value: 5.0 to 9.0%, SiO.sub.2 converted value: 0.2 to 0.7%, ZrO.sub.2 converted value: 0.1 to 0.6%, Mg: 0.2 to 0.8%, total of F converted value: 0.02 to 0.20%, and total of Na.sub.2O converted value and K.sub.2O converted value: 0.03 to 0.20%; as a content in the flux; in which a content of C in the steel sheath is 0.03% or less in mass % relative to the total mass of the steel sheath.