METHODS TO IMPROVE HOT WORKABILITY OF METAL ALLOYS

    公开(公告)号:CA2885932A1

    公开(公告)日:2014-09-25

    申请号:CA2885932

    申请日:2014-03-07

    Abstract: A method of processing an alloy workpiece to reduce thermal cracking comprises inserting the alloy workpiece into a metallic canister, wherein the metallic canister has a lower coefficient of thermal expansion than the alloy workpiece and includes an inner surface comprising a nickel-boron coating on at least a portion of the inner surface, encapsulating the alloy workpiece in the metallic canister to provide a canned assembly, removing at least a portion of gas from the interior of the canned assembly, and heating the canned assembly to transient liquid phase bond the alloy workpiece to the metallic canister.

    Melting furnace including wire-discharge ion plasma electron emitter

    公开(公告)号:AU2008232823B2

    公开(公告)日:2013-08-15

    申请号:AU2008232823

    申请日:2008-03-26

    Abstract: An apparatus for melting an electrically conductive metallic material includes a vacuum chamber and a hearth disposed in the vacuum chamber. At least one wire-discharge ion plasma electron emitter is disposed in or adjacent the vacuum chamber and is positioned to direct a wide-area field of electrons into the vacuum chamber, wherein the wide-area electron field has sufficient energy to heat the electrically conductive metallic material to its melting temperature. The apparatus may further include, at least one of a mold and an atomizing apparatus which is in communication with the vacuum chamber and is positioned to receive molten material from the hearth. Preferably, the pressure within the furnace chamber is maintained at more than 5,3 Pa to decrease evaporation of volatile elements.

    ION PLASMA ELECTRON EMITTERS FOR A MELTING FURNACE

    公开(公告)号:HK1172946A1

    公开(公告)日:2013-05-03

    申请号:HK13100099

    申请日:2013-01-04

    Abstract: A method of processing a metallic material includes introducing an electrically conductive metallic material comprising at least one of a metal and a metallic alloy into a furnace chamber maintained at a low pressure relative to atmospheric pressure. A first electron field having a first area of coverage is generated using at least a first ion plasma electron emitter, and the material within the furnace chamber is subjected to the first electron field to heat the material to a temperature above a melting temperature of the material. A second electron field having a second area of coverage smaller than the first area of coverage is generated using a second ion plasma electron emitter. At least one of any solid condensate within the furnace chamber, any solidified portions of the electrically conductive metallic material, and regions of a solidifying ingot to the second electron field, is subjected to the second electron field, using a steering system.

    Ion plasma electron emitters for a melting furnace

    公开(公告)号:AU2010286883A1

    公开(公告)日:2012-02-16

    申请号:AU2010286883

    申请日:2010-08-10

    Abstract: An apparatus for melting an electrically conductive metallic material comprises an auxiliary ion plasma electron emitter configured to produce a focused electron field including a cross-sectional profile having a first shape. The apparatus further comprises a steering system configured to direct the focused electron field to impinge the focused electron field on at least a portion of the electrically conductive metallic material to at least one of melt or heat any solidified portions of the electrically conductive metallic material, any solid condensate within the electrically conductive metallic material, and/or regions of a solidifying ingot.

    THERMOMECHANICAL PROCESSING OF ALPHA-BETA TITANIUM ALLOYS

    公开(公告)号:ZA201504108B

    公开(公告)日:2022-05-25

    申请号:ZA201504108

    申请日:2015-06-08

    Abstract: One embodiment of a method of refining alpha-phase grain size in an alpha-beta titanium alloy comprises working an alpha-beta titanium alloy at a first working temperature within a first temperature range in the alpha-beta phase field of the alpha-beta titanium alloy. The alloy is slow cooled from the first working temperature. On completion of working at and slow cooling from the first working temperature, the alloy comprises a primary globularized alpha-phase particle microstructure. The alloy is worked at a second working temperature within a second temperature range in the alpha-beta phase field. The second working temperature is lower than the first working temperature. The is worked at a third working temperature in a third temperature range in the alpha-beta phase field. The third working temperature is lower than the second working temperature. After working at the third working temperature, the titanium alloy comprises a desired refined alpha-phase grain size.

Patent Agency Ranking