Titanium-iron-carbon alloy with low cost and high strength

A high-strength, carbon alloy technology, applied in the fields of material science and non-ferrous metals and their alloys, can solve the problems of increasing the manufacturing cost of titanium alloys, difficult smelting, unfavorable large-scale application of titanium alloys, etc., and achieves the effect of low cost and easy smelting

Inactive Publication Date: 2015-12-02
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the high melting point of some β-phase stable elements, it is difficult to melt, such as vanadium (melting point 1890 ° C), molybdenum (melting point 2610 ° C), chromium (melting point 1907 ° C), tantalum (melting point 2996 ° C), tungsten (melting point 3380 ° C), these The use of high melting point raw materials will inevitably increase the manufacturing cost of titaniu

Method used

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  • Titanium-iron-carbon alloy with low cost and high strength
  • Titanium-iron-carbon alloy with low cost and high strength
  • Titanium-iron-carbon alloy with low cost and high strength

Examples

Experimental program
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Example Embodiment

[0016] Example 1

[0017] 88.5 grams of pure titanium wire and 11.5 grams of iron-carbon alloy with a carbon content of 0.45% are used as raw materials for smelting in a non-consumable vacuum electric arc furnace. The vacuum of the electric arc furnace is higher than 2.0×10 during smelting -2 Pa, arc welding power source working current is 400A, working voltage is 20V. After the alloy is first smelted into a whole, it is turned over in the crucible for a second smelting, and this is repeated for a total of 8 times. After the alloy is smelted, cut an alloy sample with a size of φ5×10mm from the alloy ingot by wire EDM, and test the mechanical properties with a compression mechanics testing machine with an extensometer. The structure is shown in Table 1. The microstructure of the alloy was observed with optical microscope and scanning electron microscope. From figure 1 The compression mechanical properties test of the as-cast alloy showed that its yield strength was 1149MPa (engi...

Example Embodiment

[0018] Example 2

[0019] 88.5 grams of pure titanium wire and 11.5 grams of iron-carbon alloy with a carbon content of 0.56% are used as raw materials for smelting in a non-consumable vacuum electric arc furnace. The vacuum of the electric arc furnace is higher than 2.0×10 during smelting -2 Pa, arc welding power source working current is 420A, working voltage is 30V. After the alloy is first smelted into a whole, it is turned over in the crucible for a second smelting, and this is repeated for a total of 8 times.

[0020] After the alloy is smelted repeatedly and uniformly, the alloy samples with length, width and height of 40, 40, and 15 are cut from the alloy ingot by wire EDM, and then rolled at 900 ℃ in multiple passes, and the deformation of the pass is controlled at Within 10%, the total deformation is more than 60%. After rolling, the alloy is cooled to room temperature by water quenching or air cooling. The alloy plate was cut into tensile and compression specimens with...

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Abstract

Disclosed is titanium-iron-carbon alloy with low cost and high strength. The titanium-iron-carbon alloy is characterized by comprising, by mass, 11%-12% of Fe, 0.03%-0.07% of C, the balance Ti and inevitable impurities. According to the titanium-iron-carbon alloy, a titanium alloy system serves as an object; the two elements of titanium and iron serve as a main alloy body; the titanium alloy with high strength and ductility is obtained by adding trace carbon element. The titanium alloy adopting the matching ratio is not only easy to smelt, but also low in cost.

Description

technical field [0001] The invention relates to the fields of material science and non-ferrous metals and their alloys, especially titanium alloys. Background technique [0002] Titanium is a medium-low density metal (its density is 4.5), has high specific strength, good medium temperature performance, non-magnetic, strong corrosion resistance, good welding performance, and is an excellent metal structure material. 100 Over the past years, it has increasingly occupied a leading position in high-tech fields such as aviation, aerospace, ships, nuclear power, weaponry, oil exploration and biomedical materials, and its main development trend is high performance and low cost. [0003] The TB-type titanium alloy obtained by adding various β-phase stable elements, such as molybdenum, tungsten, vanadium, chromium, niobium, tantalum, manganese, cobalt, etc., has high strength and is an important part of the research and development and application of high-performance titanium alloys....

Claims

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Application Information

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IPC IPC(8): C22C14/00
Inventor 贾元智刘睿超刘延国马明臻刘日平
Owner YANSHAN UNIV
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