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Low-cost titanium alloy containing Gr an Mn alloying elements

A technology for alloying elements and titanium alloys, applied in the fields of titanium alloys containing Mn alloying elements and Cr, can solve problems such as high cost, and achieve the effects of expanding the scope of use, reducing costs, and good mechanical properties

Inactive Publication Date: 2013-05-01
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main reason for limiting its use is its high cost, in its cost structure, raw materials account for about 40% of the cost

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Commercially available sponge titanium, pure chromium, pure aluminum, and pure manganese are mixed according to the composition ratio in Table 1, pretreated in a common box-type resistance furnace (150-200°C for 12 hours), and then divided into pieces The ingot was smelted four times in a water-cooled copper crucible, and the ingot was heated to 730°C, and rolled into a plate with a thickness of 5mm on a tandem rolling mill. After the rolled plate is heat-treated in the heat treatment system in Table 2, mechanical tests are carried out according to the requirements of the national standard GB / T228-2002, and its mechanical properties are shown in Table 2.

[0012] Table 1 The proportioning composition of the alloy in Example 1

[0013] chemical element Cr mn Al O N C H Ti Content (wt%) 12 4.16 4.58 0.02 0.001 0.001 0.001 margin

[0014] Table 2 Mechanical properties of the plate in Example 1

[0015] Heat treatment system...

Embodiment 2

[0017] The commercially available sponge titanium, pure chromium, pure manganese, and titanium-aluminum master alloy are formed into electrode blocks according to the composition ratio in Table 3, and the electrode blocks are welded into vacuum consumable electrodes in a vacuum plasma box. Then carry out 4 times vacuum consumable electrode arc melting to make ingot. The ingot is opened and forged at 1100°C to form a φ35mm rolled billet. The billet is heated to 750°C and rolled into a φ15mm bar on a transverse rolling mill material. After the rolled bar is subjected to the heat treatment of the heat treatment system in Table 4, the mechanical test is carried out according to the requirements of the national standard GB / T228-2002, and its mechanical properties are shown in Table 4.

[0018] Table 3 The proportioning composition of the alloy in Example 2

[0019] chemical element Cr mn Al O N C H Ti Content (wt%) 12 5 4.26 0.05 0.001 0.001 0.001 ...

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PUM

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Abstract

The invention relates to a low- cost titanium alloy containing Gr and Mn alloying elements, which comprises the following components in weight percent: 10-12 wt percent of Gr, 3-5 wt percent of Mn, 4-5 wt percent of Al, 0.0-0.05 wt percent of O, 0.0-0.01 wt percent of C, 0.0-0.01 wt percent of N, 0.0-0.001 wt percent of H, and the balance of Ti. The titanium alloy provided by the invention utilizes cheap alloy elements Gr and Mn as intensification elements, which can not only greatly reduce the cost of the titanium alloy, but also are provided with favorable mechanical properties. The use of the titanium alloy has highly important significance in enlarging serviceable range of the titanium alloy and expanding titanium alloy market.

Description

technical field [0001] The invention relates to a titanium alloy, in particular to a titanium alloy containing Cr and Mn alloy elements. Background technique [0002] Titanium and titanium alloys are widely used in various industrial fields due to their good comprehensive properties such as low density, high specific strength, corrosion resistance, high temperature resistance, non-magnetism, and good biocompatibility. In 2011, the world's steel output was 1.49 billion tons, but the output of titanium and titanium alloys was only 270,000 tons. From this, it is not difficult to find that the usage of titanium and titanium alloys in various industrial fields is very low. The most important reason for limiting its use is its high cost. In its cost structure, raw materials account for about 40% of the cost. Therefore, using cheap alloying elements (such as Fe, Cr, Mn, etc.) to replace expensive alloying elements (such as V, Zr, Nb, Mo, etc.) to strengthen titanium alloys is one...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00
Inventor 李重河朱凯亮鲁雄刚江涛邢方圆王世华吴广新张捷宇
Owner SHANGHAI UNIV