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Iron-niobium-silicon alloy

A technology of silicon alloy and iron-niobium, which is applied in the field of iron-niobium-silicon alloy in ferroalloy, can solve problems such as difficult other uses, achieve good mechanical properties, avoid polymorphic phase transformation, and improve the effect of toughness

Active Publication Date: 2007-05-09
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the brittleness of the alloy makes it difficult for this ferroniobium alloy with low niobium content to be used as an additive for alloying elements in components.

Method used

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Experimental program
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Embodiment 1

[0030] The organization is that ε particles are uniformly distributed in α-Fe+ε-Fe 2 On the Nb eutectic, see Figure 4. In the ε phase, Si occupies 1 / 3 of the position of Nb.

Embodiment 2

[0032] The organization is that ε particles are uniformly distributed in α-Fe+ε-Fe 2 On the Nb eutectic, see Figure 5. In the ε phase, Si occupies about 1 / 3 of the Nb positions.

Embodiment 3

[0034] The organization is that ε particles are uniformly distributed in α-Fe+ε-Fe 2 On the Nb eutectic, see Figure 6. In the ε phase, Si occupies 1 / 3 of the position of Nb.

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Abstract

This invention relates to a Fe-Nb-Si alloy, which is composed of: Nb 7.0-15.0 wt.%, Si 1.0-8.0 wt.%, Mn less than 0..15 wt.%, P less than 0.05 wt.%, S less than 0.05 wt.%, and Fe. The Fe-Nb-Si alloy has high ductility and high soft magnetic performance, and can be used as a soft magnetic material and an intermediate alloy in steel making. The Fe-Nb-Si alloy also has high mechanical performance, and can be used as a cutter material.

Description

(1) Technical field [0001] The present invention relates to iron-niobium-silicon alloy in iron alloy. (2) Background technology [0002] Both ferroniobium and ferrosilicon are important ferroalloys in the steel industry. In steel, niobium has the functions of preventing grain growth, inhibiting recrystallization of deformed austenite and producing significant precipitation strengthening effect through NbC generated during rolling, especially in the non-recrystallization zone of austenite Internal rolling can effectively refine grains. Therefore, niobium is an important and even irreplaceable alloying element in steel production. Silicon is the most important alloying element of electrical steel (silicon steel). Silicon has the effect of narrowing the austenite phase area in steel. According to the Fe-Si phase diagram, iron-silicon alloys with a silicon content greater than 3.8 at.% and less than 10 at.% will not undergo polymorphism from α-Fe to γ-Fe Sexual transformatio...

Claims

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Application Information

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IPC IPC(8): C22C38/12
Inventor 田青超陈家光
Owner BAOSHAN IRON & STEEL CO LTD
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