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Novel nano stainless steel

A stainless steel and nano technology, applied in the field of new bulk nano alloy stainless steel, can solve the problems of unsatisfactory mechanical properties of 304 stainless steel, and achieve the effect of simple process

Inactive Publication Date: 2020-08-21
广东合一纳米材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The steel has good processing performance and weldability in the atmosphere, but the mechanical properties of 304 stainless steel are not satisfactory, and there is still a lot of room for improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] An embodiment of the novel nano-stainless steel of the present invention, the chemical composition and weight percentage contained in the nano-stainless steel described in this embodiment are: aluminum 1.8%, carbon 0.07%, manganese 2.0%, silicon 1.0%, chromium 18.0%, 10.0% nickel, 0.03% sulfur, 0.035% phosphorus and the balance iron.

[0019] In this embodiment, the sources of each raw material are as follows: the aluminum source is alumina powder with a particle size of 10-50 nm, and other component raw materials are common material sources available on the market.

[0020] In this embodiment, the preparation method of the novel nano-stainless steel is as follows: mixing various raw materials and heating to above 1600° C. for smelting to obtain the novel nano-stainless steel.

Embodiment 2～6 and comparative example 1～2

[0022] Embodiments 2~6 and comparative examples 1~2 and the difference of the chemical composition of novel nano-stainless steel described in embodiment 1 are only the difference of aluminum content, and the novel nano-stainless steel described in embodiment 2~6 and comparative examples 1~2 The aluminum content is shown in Table 1.

[0023] The raw material sources and preparation methods of the novel nano-stainless steel described in Examples 2-6 and Comparative Examples 1-2 are the same as those in Example 1.

[0024] Table 1

[0025]

[0026]

Embodiment 7

[0028] An embodiment of the novel nano-stainless steel of the present invention, the chemical composition and weight percentage contained in the nano-stainless steel described in this embodiment are: aluminum 1.6%, carbon 0.07%, manganese 2.0%, silicon 1.0%, chromium 19.0%, 10.0% nickel, 0.03% sulfur, 0.035% phosphorus and the balance iron.

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Abstract

The invention discloses novel nano stainless steel. The novel nano stainless steel comprises chemical components: by weight, 1.5-2.5% of aluminum, 0-0.07% of carbon, 0-2.0% of manganese, 0-1.0% of silicon, 17.0-19.0% of chromium, 8.0-11.0% of nickel, and the balance iron and inevitable impurities, wherein aluminum is made of nanoscale alumina powder. According to the novel nano stainless steel, the nanoscale alumina powder with the specific content is added to raw materials for preparing the novel nano stainless steel, is uniformly dispersed in a mixture to form nanocrystallines and then induces a steel structure to form a microstructure less than or equal to 100 nm. Accordingly, a uniform nanostructure is formed in a formula sample, and the purpose of nano enhancement is achieved. The invention further discloses a preparation method of the novel nano stainless steel. The preparation method is simple in process, and the novel nano stainless steel can be industrially produced on a largescale.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a novel block nano-alloy stainless steel. Background technique [0002] Due to their unique physical, chemical, and mechanical properties, nanomaterials have broad application prospects in electronic information, bioengineering, and aerospace. Nanomaterials mainly include nanopowder materials, nanofilm materials, surface nanomaterials and bulk nanomaterials. However, most of the nanomaterials currently on the market refer to nanopowder materials (zero-dimensional), and block nanomaterials are three-dimensional nanomaterials. The cold pressing and sintering molding techniques used in the early days will lead to microstructural defects of nanocrystalline metal materials. The performance of the bulk nanocrystalline metal materials caused by this is unstable; and due to the limitations of preparation technology and material formulation, it is still difficult to realize indus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C38/06C22C38/02C22C33/04
CPCC22C33/04C22C38/001C22C38/002C22C38/02C22C38/06C22C38/58C22C2200/04
Inventor 王伟
Owner 广东合一纳米材料科技有限公司
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