Method for strengthening metal material tissue and metal blank

A technology of metal materials and blanks, which is applied in the field of metal material processing, can solve the problems of labor cost, high temperature, etc., and achieve the effect of improving the structure and improving the structure strengthening

Inactive Publication Date: 2002-11-20
GKSS FORSCHUNGSZENTRUM GEESTHACHT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In practice, however, the degree of deformation achieved during extrusion is mostly limited to a cross-sectional reduction of about 10:1 due to the desired geometry of the formed part
In addition, the disadvantage is that the extrusion process requires significantly higher temperatures than the forging process
Therefore, materials that are very sensitive to oxidation and corrosion, such as titanium-aluminum alloys, must be specially sealed during extrusion, which is relatively labor-intensive and expensive

Method used

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  • Method for strengthening metal material tissue and metal blank
  • Method for strengthening metal material tissue and metal blank
  • Method for strengthening metal material tissue and metal blank

Examples

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Embodiment Construction

[0032] The method described here was tested in the laboratory field on a TiAl alloy of composition (in atomic percent) Ti-47Al-3.7(Nb, Cr, Mn, Si)-0.5B. The test is carried out in air. For this purpose, the test piece provided with the threaded head is inserted into a compression device, where, in order to distort the test piece, the test piece supports can be rotated relative to each other ( figure 1 ). These test pieces can be heated to different deformation temperatures between 1000 and 1100 °C by means of induction coils. The temperature of the test piece is measured by a thermocouple. Due to the geometrical configuration of the coils, the hot specimen region has a length of approximately 6 mm, which is considered the effective specimen length for analysis. After reaching the desired temperature, the test piece is firstly subjected to a constant pressure in the direction of compression, said pressure being between 10 and 50 MPa. Here, since the casting structure is ver...

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Abstract

Process for treating metallic materials, especially for consolidating the structure of metallic materials comprises producing a blank of the metallic materials, heating to a deformation temperature and deforming the blank. An Independent claim is also included for a blank made from titanium aluminide. Preferably deformation is exerted by producing torsion or compressing. Heating is carried out using electrical induction. Deformation is carried out at 1,000 degrees C.

Description

technical field [0001] The invention relates to a method for the treatment of metal materials, in particular for strengthening the structure of metal materials, and to a metal blank. Background technique [0002] The strengthening results achieved by the traditional metal material processing and forming techniques used so far generally cannot meet the desired requirements. Some special metal materials, such as titanium aluminum alloy (Titanaluminide) family or magnesium material family, according to the traditional processing and forming technology currently used, such as by forging or extrusion, always have obvious chemical and structural inhomogeneity , which cannot be tolerated in certain technical applications. A disadvantage of the known processing and shaping techniques is firstly that they can only achieve relatively low degrees of deformation. This is unacceptable when these metallic materials are used, for example, in applications with high thermal and mechanical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/18B21J5/00B21J9/08C21D7/13C21D8/00C22C14/00C22F1/00C22F1/02
CPCB21J1/025B21J9/08C21D7/13C21D8/02C22F1/183
Inventor 弗里茨·阿佩尔斯特凡·埃格特乌韦·洛伦茨米夏埃尔·厄林
Owner GKSS FORSCHUNGSZENTRUM GEESTHACHT GMBH
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