In-situ micro nanometer TiC particle strengthened and toughened ordinary carbon steel and preparation method thereof

A technology for strengthening and toughening ordinary carbon steel, which is applied in the field of in-situ trace nano-TiC particles strengthening and toughening ordinary carbon steel and its preparation, and the preparation of high-performance structural steel. It can solve the problems of uneven suspension and dispersion, and achieve enhanced microstructure Thinning and toughening, promoting the effect of dispersion

Inactive Publication Date: 2018-12-18
JILIN UNIV
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Problems solved by technology

[0007] The present invention also provides a method for preparing ordinary carbon steel strengthened and toughened by in-situ micro-nano-TiC particles. The intermediate alloy pre-dispersed with endogenous nano-TiC particles is used as the nano-particle carr

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  • In-situ micro nanometer TiC particle strengthened and toughened ordinary carbon steel and preparation method thereof
  • In-situ micro nanometer TiC particle strengthened and toughened ordinary carbon steel and preparation method thereof
  • In-situ micro nanometer TiC particle strengthened and toughened ordinary carbon steel and preparation method thereof

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preparation example Construction

[0049] The present invention also provides a method for preparing ordinary carbon steel toughened by in-situ micro-nano TiC particles, which specifically includes the following steps:

[0050] 1. Prepare the preparation of the pre-dispersed master alloy containing in-situ nano-TiC particles, as follows:

[0051] Step 1. Put 4-8g of carbon nanotubes with a purity of 90wt.% into a ball milling jar, which contains ZrO with diameters of 5mm, 7mm, 11mm, 15mm, 20mm, and 22mm, respectively. 2 Balls, 4-10 of each, ZrO 2 The ball mass is 320-480g in total, the ball-to-material ratio is set to 80-133:1, and the carbon nanotubes are activated by high-speed ball milling at a speed of 200-350r / min for 2-4h with a planetary ball mill;

[0052] Step 2. Add 60-80g of 1000 mesh pure aluminum powder with a purity of 99.0wt.% and 16-24g of 300-1000 mesh titanium powder with a purity of 99.0wt.% to the ball mill tank after the activation treatment, and adjust the diameters in the tank respective...

Embodiment 1

[0117] 1. Preparation of in-situ micro-nano TiC particle pre-dispersed alloy, as follows:

[0118] Step 1, put 6g of carbon nanotubes with a purity of 90wt.% into a ball milling jar, which contains ZrO with diameters of 5mm, 7mm, 11mm, 15mm, 20mm, and 22mm respectively 2 Balls, 6 of each, ZrO 2 The mass of the balls is 480g in total, the ball-to-material ratio is set to 80:1, and the carbon nanotubes are activated by high-speed ball milling at a speed of 200r / min for 4h with a planetary ball mill;

[0119] Step 2. Add 90g of 1000-mesh pure aluminum powder with a purity of 99.0wt.% and 24g of 500-mesh titanium powder with a purity of 99.0wt.% to the ball mill tank after the activation treatment, and adjust the diameters in the tank to 5mm, 7mm and 11mm respectively , 15mm, 20mm, 22mm ZrO 2 10 balls each, ZrO 2 The mass of the ball is 800g in total, the ratio of ball to material is 8:1, powder and ZrO 2 The overall volume of the balls does not exceed 3 / 4 of the volume of the...

Embodiment 2

[0136] 1. Preparation of in-situ micro-nano TiC particle pre-dispersed alloy, as follows:

[0137] Step 1, put 8g of carbon nanotubes with a purity of 90wt.% into a ball milling jar, which contains ZrO with diameters of 5mm, 7mm, 11mm, 15mm, 20mm, and 22mm respectively 2 Balls, 10 of each, ZrO 2 The mass of the balls is 800g in total, the ball-to-material ratio is set to 100:1, and the carbon nanotubes are activated by high-speed ball milling at a speed of 350r / min for 2h with a planetary ball mill;

[0138] Step 2. Add 60g of 300 mesh pure aluminum powder with a purity of 99.0wt.% and 32g of 325 mesh titanium powder with a purity of 99.0wt.% to the ball mill tank after the activation treatment, and adjust the diameters in the tank to be 5mm, 7mm and 11mm respectively , 15mm, 20mm, 22mm ZrO 2 10 balls each, ZrO 2 The mass of the ball is 800g in total, the ratio of ball to material is 8:1, powder and ZrO 2 The overall volume of the balls does not exceed 3 / 4 of the volume of...

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Abstract

The invention discloses in-situ micro nanometer TiC particle strengthened and toughened ordinary carbon steel. The in-situ micro nanometer TiC particle strengthened and toughened ordinary carbon steelis characterized by being composed of, by weight, 0.38-0.50% of carbon, 0.17-0.37% of silicon, 0.50-0.80% of manganese, 0.02-0.015% of phosphorus, 0.028-0.26% of sulfur, 0.039-1.09% of chromium, 0.11-0.25% of nickel, 0.05-0.25% of copper, 0.03-1.00% of in-situ nanometer TiC particle pre-dispersed alloy containing 20-40% by weight of nanometer TiC, and the balance iron. In the ordinary carbon steel, nanometer TiC particles are used as structure regulating agents and strengthening agents of the ordinary carbon steel, and thus the toughness and plasticity of the ordinary carbon steel are improved. The invention further provides the in-situ micro nanometer TiC particle pre-dispersed alloy and a preparation method thereof.

Description

technical field [0001] The invention relates to an ordinary carbon steel strengthened and toughened by in-situ micro-nano TiC particles and a preparation method thereof, which belongs to the field of high-performance structural steel preparation. Background technique [0002] Steel is a structural material that combines the advantages of abundant resources, large production scale, easy processing, diverse performance, low cost, convenient use, and recyclability. It is the most widely used basic raw material in production and life. Iron and steel materials are still irreplaceable structural materials for a long period of time, and are the key material basis for social development, and their industrial manufacturing level is an important indicator to measure the social and economic level. In the rapidly developing modern society, people have put forward higher requirements for the technology and performance of steel materials, such as: underground and marine facilities, long-s...

Claims

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Application Information

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IPC IPC(8): C22C38/02C22C38/04C22C38/42C22C33/06C21D6/00C21D1/773
CPCC22C38/02C21D1/773C21D6/004C21D6/005C21D6/008C22C33/06C22C38/04C22C38/42
Inventor 邱丰李传路姜启川常芳赵庆龙
Owner JILIN UNIV
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