THERMOMECHANICAL PROCESSING OF HIGH STRENGTH NON- MAGNETIC CORROSION RESISTANT MATERIAL

    公开(公告)号:IN3008DEN2015A

    公开(公告)日:2015-10-02

    申请号:IN3008DEN2015

    申请日:2015-04-10

    Abstract: A method of processing a non- magnetic alloy workpiece comprises heating the workpiece to a warm working temperature , open die press forging the workpiece to impart a desired strain in a central region of the workpiece , and radial forging ,the workpiece to impart a desired strain in a surface region of the workpiece. In a non- limiting embodiment , after the steps of open die press forging and radial forging the strain imparted in the surface region is substantially equivalent to the strain imparted in the central region. In another non limiting embodiment the strain imparted in the central and surface regions are in a range from 0.3 inch/inch to 1 inch/inch, and there exists no more than a 0.5 inch/inch difference in strain of the central region compared with the strain of the surface region of the workpiece. An alloy forging processed according to methods described herein also is disclosed.

    Ion plasma electron emitters for a melting furnace

    公开(公告)号:AU2014221194A1

    公开(公告)日:2014-09-25

    申请号:AU2014221194

    申请日:2014-09-02

    Abstract: Abstract A method of processing an electrically conductive metallic material, the method comprising: 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; generating a first electron field having a first area of coverage using at least a first ion plasma electron emitter; subjecting the material within the furnace chamber to the first electron field to heat the material to a temperature above a melting temperature of the material; generating a second electron field having a second area of coverage using a second ion plasma electron emitter; and subjecting 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, using a steering system, to melt or heat at least one of the solid condensate, the solidified portions, and the regions of the solidifying ingot, wherein the second area of coverage is smaller than the first area of coverage. WO 2011/025648 PCT/US2010/044944 6146 634 I 816 639 '" " 1(' f 'i1 1 ' 1 1 1 1 ')'fi 639 If in il unilli i I I l 638 11 '1 f u ail II 63 622 Mli1'

    Processing routes for titanium and titanium alloys

    公开(公告)号:AU2011302567A1

    公开(公告)日:2013-04-11

    申请号:AU2011302567

    申请日:2011-08-22

    Abstract: Methods of refining the grain size of titanium and titanium alloys include thermally managed high strain rate multi-axis forging. A high strain rate adiabatically heats an internal region of the workpiece during forging, and a thermal management system is used to heat an external surface region to the workpiece forging temperature, while the internal region is allowed to cool to the workpiece forging temperature. A further method includes multiple upset and draw forging titanium or a titanium alloy using a strain rate less than is used in conventional open die forging of titanium and titanium alloys. Incremental workpiece rotation and draw forging causes severe plastic deformation and grain refinement in the titanium or titanium alloy forging.

    IMPROVING HOT WORKABILITY OF METAL ALLOYS VIA SURFACE COATING

    公开(公告)号:CA2823718A1

    公开(公告)日:2012-07-26

    申请号:CA2823718

    申请日:2012-01-03

    Abstract: A method of processing an alloy ingot or other alloy workpiece to reduce thermal cracking may generally comprise depositing a glass material onto at least a portion of a surface of a workpiece, and heating the glass material to form a surface coating on the workpiece that reduces heat loss from the workpiece. The present disclosure also is directed to an alloy workpieces processed according to methods described herein, and to articles of manufacture including or made from alloy workpieces made according to the methods.

    MELTING FURNACE INCLUDING WIRE-DISCHARGE ION PLASMA ELECTRONEMITTER

    公开(公告)号:CA2680546A1

    公开(公告)日:2008-10-09

    申请号:CA2680546

    申请日:2008-03-26

    Abstract: An apparatus for melting an electrically conductive metallic material inc ludes 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 t he vacuum chamber and is positioned to direct a wide-area field of electrons into the vacuum chamber, wherein the wide-area electron field has sufficien t energy to heat the electrically conductive metallic material to its meltin g temperature. The apparatus may further include, at least one of a mold and an atomizing apparatus which is in communication with the vacuum chamber an d 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 dec rease evaporation of volatile elements.

    METHODS FOR PROCESSING METAL ALLOYS

    公开(公告)号:CA2929946C

    公开(公告)日:2022-06-14

    申请号:CA2929946

    申请日:2014-10-28

    Abstract: A method of processing a metal alloy includes heating to a temperature in a working temperature range from a recrystallization temperature of the metal alloy to a temperature less than an incipient melting temperature of the metal alloy, and working the alloy. At least a surface region is heated to a temperature in the working temperature range. The surface region is maintained within the working temperature range for a period of time to recrystallize the surface region of the metal alloy, and the alloy is cooled so as to minimize grain growth. In embodiments including superaustenitic and austenitic stainless steel alloys, process temperatures and times are selected to avoid precipitation of deleterious intermetallic sigma-phase. A hot worked superaustenitic stainless steel alloy having equiaxed grains throughout the alloy is also disclosed.

    Procesamiento termomecánico de material resistente a la corrosión no magnético de alta resistencia

    公开(公告)号:ES2869436T3

    公开(公告)日:2021-10-25

    申请号:ES14707905

    申请日:2014-02-17

    Abstract: Un método de procesamiento de una pieza de trabajo de aleación de acero inoxidable austenítica no magnética, que comprende: recocer la pieza de trabajo; calentar la pieza de trabajo hasta una temperatura de trabajo en caliente, en donde la temperatura de trabajo en caliente se encuentra en un intervalo de 510 °C a 621 °C (de 950 °F a 1.150 °F); forjar en prensa de troquel abierto la pieza de trabajo a una temperatura en el intervalo de temperatura de trabajo en caliente para conferir un esfuerzo deseado a una región central de la pieza de trabajo; y forjar radialmente la pieza de trabajo a una temperatura en el intervalo de temperatura de trabajo en caliente para conferir un esfuerzo deseado a una región superficial de la pieza de trabajo; en donde, después de las etapas de forjado en prensa de troquel abierto y forjado radial, el esfuerzo conferido a la región central y el esfuerzo conferido a la región superficial se encuentran, cada uno, en un intervalo de 0,3 cm/cm (pulgada/pulgada) a 1,0 cm/cm (pulgada/pulgada); en donde la diferencia en el esfuerzo de la región central a la región superficial no es mayor de 0,5 cm/cm (pulgada/pulgada), en donde una "región superficial" de una pieza de trabajo incluye un volumen de material entre la superficie de la pieza de trabajo hasta una profundidad de hasta aproximadamente el 50 % de la distancia de la superficie al centro de la pieza de trabajo y una "región central" de una pieza de trabajo incluye un volumen de material localizado en el centro que constituye hasta aproximadamente el 70 % en volumen de material de la pieza de trabajo; y en donde la pieza de trabajo forjada tiene una sección transversal circular con un diámetro mayor de 13,34 cm (5,25 pulgadas).

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