Production method for in-situ generation of titanium zirconium boride reinforced high-modulus and high-hardness steel

An in-situ generation, boride technology, applied in the field of iron and steel matrix composite materials, can solve the problems of complex process and achieve the effect of inhibiting the iron boron phase

Active Publication Date: 2016-09-21
KUNMING UNIV OF SCI & TECH
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But the process is more complicated, the preparatio

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  • Production method for in-situ generation of titanium zirconium boride reinforced high-modulus and high-hardness steel
  • Production method for in-situ generation of titanium zirconium boride reinforced high-modulus and high-hardness steel
  • Production method for in-situ generation of titanium zirconium boride reinforced high-modulus and high-hardness steel

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Embodiment 1

[0027] A preparation method for in-situ generation of titanium-zirconium boride reinforced high-modulus high-hardness steel, the specific steps are as follows:

[0028] Step 1. First, weigh the boron powder, titanium powder, zirconium powder and high-purity iron powder with a purity of more than 99.99% according to the mass percentage of B3.52%, Ti 7.60%, Zr 5.80%, and put the powder into a ball mill tank Mix the materials with a planetary ball mill, the ball-to-material ratio is 10:1, and the ball milling time is 3 hours;

[0029] Step 2. Take out the mixed powder obtained in step 1, put it in the copper crucible of the vacuum arc melting furnace, and melt it under the protective atmosphere of argon gas, and at the same time, continuously process the melt by electromagnetic stirring to make the melt completely homogenized , while refining the precipitated phase and matrix structure, the sample was cast in a water-cooled copper mold with a cooling rate of 5K s -1 .

[0030] ...

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Abstract

The invention discloses a production method for in-situ generation of titanium zirconium boride reinforced high-modulus and high-hardness steel. The production method comprises the following specific steps: firstly, weighing boron powder with the purity of 99 percent or above, high-purity iron powder, titanium powder and zirconium powder according to mass percentage and blending, placing powder into a ball milling pot and mixing the powder by using a planetary ball mill; secondly, taking the mixed powder obtained in the first step, placing the mixed powder into a copper crucible of a vacuum arc melting furnace, and smelting under an argon protecting atmosphere; meanwhile, treating a melt by continuously performing electromagnetic stirring, and enabling the melt to be completely homogenized; at the same time, refining a precipitated phase and a matrix structure, and adopting a water-cooled copper mold to cast a sample; and thirdly, annealing the sample obtained by casting in the second step at the temperature of 1050 to 1150DEG C under the argon atmosphere, and then quenching to room temperature. According to the production method disclosed by the invention, a process is relatively simple and reliable; and the manufactured high-modulus steel is high in cost performance and good in wear resistance.

Description

technical field [0001] The invention belongs to the field of steel-based composite materials, and relates to a novel high-modulus high-hardness steel material, in particular to a preparation method for in-situ generation of titanium-zirconium boride reinforced high-modulus high-hardness steel. Background technique [0002] The development of the modern aviation industry and the automobile industry has put forward higher requirements for the performance of structural materials, requiring materials not only to have high strength, but also to have low density, and high Young's modulus to improve stiffness. In the past, the lightweight of automotive structural materials was mainly realized by ultra-high-strength steel. However, the reduction in weight also led to a decrease in stiffness, which has reached the limit in some application fields. The development of steel materials needs to further increase the stiffness and reduce the density. Iron-based composites are also conside...

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Application Information

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IPC IPC(8): C22C33/04C22C38/14C22C38/32C21D1/26
CPCC21D1/26C22C33/04C22C38/14C22C38/32
Inventor 种晓宇冯晶蒋业华周荣
Owner KUNMING UNIV OF SCI & TECH
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