A kind of high-strength corrosion-resistant zirconium-containing stainless steel and its preparation method

A corrosion-resistant, high-strength technology, applied in the field of materials, can solve the problems of stainless steel strength, corrosion resistance, harsh service environment, cumbersome preparation process, etc., to achieve excellent microstructure, improve mechanical properties and corrosion resistance Obvious effects of performance and tissue refinement

Active Publication Date: 2021-08-31
YANSHAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] With the development of industry, the application of stainless steel is more extensive, especially with the large-scale and professional development of ships, the ship industry has put forward higher requirements for the strength of stainless steel. Stainless steel is facing great challenges due to increasingly harsh conditions. It is difficult for traditional stainless steel to meet the current standards in engineering applications in terms of strength and corrosion resistance.
[0004] Traditional stainless steel usually adopts the method of applying strain to refine the crystal particles, make the material structure uniform and recrystallize to produce a phase change, thereby changing the physical properties of the material to improve the strength of stainless steel. The processing method is single, the cost is high, and the preparation process is cumbersome.

Method used

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  • A kind of high-strength corrosion-resistant zirconium-containing stainless steel and its preparation method
  • A kind of high-strength corrosion-resistant zirconium-containing stainless steel and its preparation method
  • A kind of high-strength corrosion-resistant zirconium-containing stainless steel and its preparation method

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preparation example Construction

[0037] The present invention provides a method for preparing high-strength corrosion-resistant zirconium-containing stainless steel described in the above technical solution, comprising the following steps:

[0038] (1) The raw materials are smelted multiple times to obtain alloy ingots, the raw materials include C source, Si source, Mn source, Cr source, Ni source, Mo source, Zr source, Hf source, Ti source and Fe source;

[0039] (2) heating the alloy ingot described in step (1) to the hot rolling temperature for hot rolling treatment to obtain the alloy plate;

[0040] (3) The alloy plate described in step (2) is subjected to solution treatment and then quenched to obtain a high-strength corrosion-resistant zirconium-containing stainless steel.

[0041]In the invention, C source, Si source, Mn source, Cr source, Ni source, Mo source, Zr source, Hf source, Ti source and Fe source are smelted multiple times to obtain alloy ingots. In the present invention, the melting temper...

Embodiment 1

[0053] The high-strength corrosion-resistant zirconium-containing stainless steel provided in Example 1 includes the following components in mass percentage: 0.5% zirconium, 0.5% titanium, 0.01% hafnium, 0.3% carbon, 0.7% silicon, 1.8% manganese, 17% chromium, and 15% nickel %, molybdenum 2.3%, the balance iron. After the above mass percentages of zirconium, titanium, hafnium, carbon, silicon, manganese, chromium, nickel, molybdenum and iron are ultrasonically cleaned in acetone and alcohol, the raw materials are sequentially cleaned of Fe, Al , Mn, C, Ni, Si, Ti, Cr, Hf, Mo were placed in the water-cooled copper crucible of the non-consumable vacuum arc melting furnace that had been polished and scrubbed in advance, and the vacuum degree in the furnace cavity was set to 2×10 -2 Pa, filled with high-purity argon as a protective gas before smelting, and added magnetic suspension stirring to make it evenly mixed. Repeated smelting and flipping the ingot five times to obtain an ...

Embodiment 2

[0057] The high-strength corrosion-resistant zirconium-containing stainless steel provided in Example 2 includes the following components in mass percentage: 3% zirconium, 1.5% titanium, 0.1% hafnium, 0.3% carbon, 0.7% silicon, 1.8% manganese, 17% chromium, and 15% nickel %, molybdenum 2.3%, the balance iron. After the above mass percentages of zirconium, titanium, hafnium, carbon, silicon, manganese, chromium, nickel, molybdenum and iron are ultrasonically cleaned in acetone and alcohol, the raw materials are sequentially cleaned of Fe, Al , Mn, C, Ni, Si, Ti, Cr, Hf, Mo were placed in the water-cooled copper crucible of the non-consumable vacuum arc melting furnace that had been polished and scrubbed in advance, and the vacuum degree in the furnace cavity was set to 1.4×10 - 2 Pa, filled with high-purity argon as a protective gas before smelting, and added magnetic suspension stirring to make it evenly mixed. Alloy ingots were obtained by repeatedly smelting and turning th...

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Abstract

The invention provides a high-strength corrosion-resistant zirconium-containing stainless steel, which comprises the following components in mass percentage: C≤0.3%, Si≤1.0%, Mn≤2.0%, Cr: 16-19%, Ni: 12-19% , Mo: 1.8-3%, Zr: 0.1-6%, Hf: 0.002-0.12%, Ti: 0.1-2%, and the balance is Fe and other unavoidable impurities. The high-strength corrosion-resistant zirconium-containing stainless steel is obtained by the following preparation method: melting the raw materials to obtain alloy ingots; then performing hot rolling on the alloy ingots to obtain alloy plates; performing solution treatment on the alloy plates and then performing quenching treatment to obtain high-strength Strength Corrosion-resistant zirconium-containing stainless steel. The zirconium-containing stainless steel provided by the invention has high strength and excellent corrosion resistance.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to a high-strength corrosion-resistant zirconium-containing stainless steel and a preparation method thereof. Background technique [0002] Stainless steel refers to steel that is resistant to weak corrosive media such as air, steam, water, and chemically corrosive media such as acid, alkali, and salt. Stainless steel has excellent corrosion resistance and excellent mechanical properties, and is widely used in high temperature, high pressure, and humidity and corrosive environments. In many industrial applications, stainless steel can provide satisfactory mechanical properties and corrosion resistance. [0003] With the development of industry, the application of stainless steel is more extensive, especially with the large-scale and professional development of ships, the ship industry has put forward higher requirements for the strength of stainless steel. Stainless ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/44C22C38/50C22C38/58C21D8/02C22C33/04
CPCC21D8/0205C21D8/0226C21D8/0263C22C33/04C22C38/002C22C38/02C22C38/44C22C38/50C22C38/58
Inventor 刘日平王飞刘曙光王锁涛张星景勤马明臻张新宇
Owner YANSHAN UNIV
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