Stability of Titanium Carbide Introduced into a Weldpool

IF 0.4 Q4 METALLURGY & METALLURGICAL ENGINEERING

Russian Metallurgy (Metally) Pub Date : 2024-03-19 DOI:10.1134/S0036029523700076

N. V. Kobernik, A. S. Pankratov, A. L. Galinovskii, V. V. Aleksandrova, Yu. V. Andriyanov, A. G. Orlik

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Abstract

The possibility of introduction of titanium carbide into a weldpool is studied. Titanium carbide forms in the metal deposit structure due to proper in situ alloying. However, the in situ technology is rather complicated because of difficulties associated with the impossibility of controlling the factors predetermining the alloying element redistribution between the carbide phase and the matrix. Therefore, attention is frequently given to the introduction of titanium carbide in the finished form (ex situ technology). Titanium carbide particles can be applied as a reinforcing phase in the preparation of wear-resistant coatings using this technology. Titanium carbide is not thermodynamically prone to decomposition and interaction with the chemical elements in the Fe–Ti–C system, demonstrating its high stability. However, experimental studies show that titanium carbide undergoes cracking and dissolution in a weldpool. This process is accompanied by the saturation of the metal with titanium and an increase in its hardness.

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引入焊池的碳化钛的稳定性

研究了在焊池中引入碳化钛的可能性。由于适当的原位合金化，金属熔敷结构中会形成碳化钛。然而，由于无法控制合金元素在碳化物相和基体之间重新分布的预定因素，原位技术相当复杂。因此，人们经常关注以成品形式引入碳化钛（原位技术）。在使用这种技术制备耐磨涂层时，碳化钛颗粒可用作强化相。碳化钛在热力学上不易分解，也不易与铁-钛-碳体系中的化学元素发生相互作用，这表明碳化钛具有很高的稳定性。然而，实验研究表明，碳化钛在焊池中会发生开裂和溶解。在这一过程中，金属中的钛含量会达到饱和，硬度也会增加。

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来源期刊

Russian Metallurgy (Metally) METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

0.70

自引率

25.00%

发文量

140

期刊介绍： Russian Metallurgy (Metally) publishes results of original experimental and theoretical research in the form of reviews and regular articles devoted to topical problems of metallurgy, physical metallurgy, and treatment of ferrous, nonferrous, rare, and other metals and alloys, intermetallic compounds, and metallic composite materials. The journal focuses on physicochemical properties of metallurgical materials (ores, slags, matters, and melts of metals and alloys); physicochemical processes (thermodynamics and kinetics of pyrometallurgical, hydrometallurgical, electrochemical, and other processes); theoretical metallurgy; metal forming; thermoplastic and thermochemical treatment; computation and experimental determination of phase diagrams and thermokinetic diagrams; mechanisms and kinetics of phase transitions in metallic materials; relations between the chemical composition, phase and structural states of materials and their physicochemical and service properties; interaction between metallic materials and external media; and effects of radiation on these materials.