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In-situ synthesize (TiW) C granule reinforced Fe base composition and its preparation metod

A composite material and particle reinforcement technology, which is applied in the field of design and preparation of steel-based composite materials prepared by in-situ self-generated reinforcement phase, can solve the problems of difficulty in adding particles, achieve strong binding force, reduce segregation, and facilitate preparation

Inactive Publication Date: 2004-10-20
SHENYANG POLYTECHNIC UNIV
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Problems solved by technology

Through in-situ synthesis of (TiW)C particles, it has good interfacial compatibility and strong binding force, which solves the problem of difficult addition of particles at high temperatures and is easy to prepare

Method used

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  • In-situ synthesize (TiW) C granule reinforced Fe base composition and its preparation metod

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Embodiment Construction

[0021] Using cast iron (4.0%) steel scrap (0.2%C), ferro-tungsten and ferro-titanium as raw materials, according to the chemical composition wt% of (TiW)C / Fe, cast iron: 25.619%, scrap steel 54.627%, ferro-tungsten 12.270%, ferro-titanium 7.484%, for batching. Firstly, the cast iron is purified, and the large cast iron is remelted and purified in an electric furnace, and aluminum is added according to 2% for slagging, deoxidation, and impurities, and a small amount of silicon is added to increase fluidity. When the temperature reaches 1600 ° C, in Cast iron rods in sand molds. To derust the surface of scrap steel, put ferro-titanium and ferro-tungsten into an electric furnace and heat them to about 400°C for half an hour to dry to remove moisture and adsorbed gas. The above operations are the preparatory process for smelting.

[0022] In the vacuum induction furnace of the magnesia lining crucible, add the purified cast iron and derusted scrap steel according to the alloy ra...

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Abstract

An in-situ prepared (TiW)C particles reinforced Fe-based composition contains C (0.566-2.397 wt.%), Ti (2.264-4.758), W (4.383-18.26) features that the W atoms are used to replace part of Ti atomes in titanium carbide, and is prepared by smelting in vacuum induction furnace. Its advantages are high interface compatibility, strong binding force and high antiwear performance.

Description

technical field [0001] The invention belongs to the research on the modification of wear-resistant steel materials, and relates to the design and preparation process of preparing steel-based composite materials from in-situ self-generated reinforcement phases. Background technique [0002] In the past decade, attention has been focused on the preparation of in situ composite materials, which has the significant advantage of eliminating the interfacial incompatibility between the matrix and the strengthening phase, since the process of nucleation and growth in the melt can A thermodynamically more stable second phase is formed. Although in situ composite materials were initially developed in Al-based alloys, they were soon applied to the study of Fe-based in situ composite materials, mainly TiC-Fe composite materials. Although the in-situ synthesis of TiC particles reinforced Fe-based composites was successfully prepared, it is worth noting that the density difference betwee...

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Application Information

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IPC IPC(8): C22C38/00
Inventor 任英磊潘卫东邱克强付立铭姜文辉
Owner SHENYANG POLYTECHNIC UNIV
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