A method of making a metal reinforcing member that is to be mounted on a leading edge or a trailing edge of a composite blade of a turbine engine, the method including: shaping two metal sheets, positioning them on either side of a core including at least one recess that is to form a mold for a spacer for positioning the reinforcing member, assembling them together under a vacuum, conforming them against the core by hot isostatic compression, and cutting them to separate the reinforcing member and release the core.

Dual alloy turbine rotors and methods for manufacturing the same are provided. The dual alloy turbine rotor comprises an assembled blade ring and a hub bonded to the assembled blade ring. The assembled blade ring comprises a first alloy selected from the group consisting of a single crystal alloy, a directionally solidified alloy, or an equi-axed alloy. The hub comprises a second alloy. The method comprises positioning a hub within a blade ring to define an interface between the hub and the blade ring. The interface is a non-contacting interface or a contacting interface. The interface is enclosed by a pair of diaphragms. The interface is vacuum sealed. The blade ring is bonded to the hub after the vacuum sealing step.

A method for manufacturing a roll for rolling flat metal products having a barrel section coated with a wear-resistant layer and journals formed thereon, and a main body blank which includes a barrel section and two blank journal sections The barrel section is encased with a jacket which is connected, with its edge regions associated with the blank journal sections, in a sealed manner, to the associated end faces of the blank journal sections, and limits a cavity surrounding the barrel section. The cavity is filled with an alloy powder. The wear-resistant layer coating of the barrel section, which forms a substance-to-substance bond with said barrel section, is then formed from said alloy powder through hot isostatic pressing. The jacket is then removed from the barrel section, the blank journal sections are formed into the journals and the barrel section and the journals are finished.

A method for bonding a first silicon part to a second silicon part includes arranging the first silicon part and the second silicon part in direct physical contact on a surface in a thermal insulating structure; controlling pressure in the thermal insulating structure to a predetermined pressure; controlling temperature in the thermal insulating structure to a predetermined temperature using one or more heaters; and bonding the first silicon part and the second silicon part during a process period. The predetermined temperature is in a temperature range that is greater than or equal to 1335 C. and less than 1414 C.

A method (300) of using hot isostatic pressing to join metallic members that form a component in a gas turbine engine is disclosed. The method (300) may include applying (306) a surface treatment to the outer surfaces (14, 15, 16, 20, 22,24) of first and second metallic members (12, 18) based on whether a mechanical or metallurgical joint for the component is desired. Additionally, the method (300) may include aligning (310) the outer surfaces (14, 15, 16, 20, 22, 24) of the first and second metallic members (12, 18) to create a sealed cavity, which encompasses the joint, between the first and second metallic members(12, 18). Once the outer surfaces (14, 15, 16, 20, 22, 24) are aligned, the method (300) may include subjecting (314) the members (12, 18) to hot isostatic pressing such that material from the first metallic member (12) flows into a recess (26) within the second metallic member (18) so as to join the first and second metallic members (12, 18) to form a consolidated component (10). The consolidated component (10) may then be machined and finished (316) for use in a turbine engine.

A method for bonding stainless steel members includes: contacting a first stainless steel member with a second stainless steel member that has a strain exceeding 50% reduction; and heating the first and second stainless steel members to a re-crystallization initiation temperature or higher, after the contacting.

A method for bonding stainless steel members includes: contacting a first stainless steel member with a second stainless steel member that has a strain exceeding 50% reduction; and heating the first and second stainless steel members to a re-crystallization initiation temperature or higher, after the contacting.

Methods of fabricating reduced weight components for apparatuses include providing a plurality of layers from a component core including a relatively lightweight material to an outer layer including a relatively heavyweight material heavier in weight than the relatively lightweight material, the plurality of layers having increasingly higher proportions of the relatively heavyweight material than the relatively lightweight material from the component core to the outer layer; and diffusion bonding the plurality of layers and the outer layer by consolidation of the layers.

The present invention discloses a FeAl intermetallic compound filter element and a preparation method thereof, which relates to the field of powder metallurgy and filtration technology. In view of the drawback in the prior art that using a fiber felt as a filtration layer reduces stability and reliability of a filter, the present invention provides an FeAl intermetallic compound filter element, which comprises: at least two filter-element parts, and a rebar connecting the at least two filter-element parts transversely by means of welding, wherein, the filter-element parts each comprises at least two segments of FeAl intermetallic compound filter-element powder tube and a connector connecting the at least two segments of FeAl intermetallic compound filter-element powder tube end-to-end by means of welding; and wherein, the at least two segments of FeAl intermetallic compound filter-element powder tube each comprises a substrate framework and a surface filtration membrane.

A method for manufacturing a roll for rolling flat metal products having a barrel section coated with a wear-resistant layer and journals formed thereon, and a main body blank which includes a barrel section and two blank journal sections. The barrel section is encased with a jacket which is connected, with its edge regions associated with the blank journal sections, in a sealed manner, to the associated end faces of the blank journal sections, and limits a cavity surrounding the barrel section. The cavity is filled with an alloy powder. The wear-resistant layer coating of the barrel section, which forms a substance-to-substance bond with said barrel section, is then formed from said alloy powder through hot isostatic pressing. The jacket is then removed from the barrel section, the blank journal sections are formed into the journals and the barrel section and the journals are finished.