Synthesis of (Ti, Cr)xCy Carbides in VT6 Alloy by Direct Laser Deposition

IF 0.5 Q4 MATERIALS SCIENCE, MULTIDISCIPLINARY Inorganic Materials: Applied Research Pub Date : 2024-10-09 DOI:10.1134/S2075113324701107

A. I. Gorunov

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Abstract

The possibility of forming carbides of the (Ti,Cr)_xC_y type in the Ti₆Al₄V alloy by the method of direct laser deposition of materials (DLD) is shown. A new method for the synthesis of carbides of the (Ti,Cr)_xC_y type consists in preliminary laser cladding of carbon fibers with chromium, adding them to the VT6 powder mixture, and fusing the resulting DLD composition. Thus, a new Ti₆Al₄V/CFs/Cr alloy was obtained. The formation of carbides of the Cr_xC_y type was revealed in the coating on carbon fibers (CF/Cr). The appearance of Cr_xC_y carbides in CF/Cr samples is due to the interaction of carbon with chromium as a result of laser processing. The average microhardness of the Ti₆Al₄V/CFs/Cr alloy was 700 ± 100 HV_0.01. At the same time, the hardness of the detected carbides (Ti,Cr)_xC_y in the Ti₆Al₄V/CFs/Cr alloy was 1000 ± 40 HV_0.01. During the DLD process, the carbon fiber can be completely or partially dissolved. In the composite material Ti₆Al₄V/CFs/Cr, carbides (Ti,Cr)_xC_y are formed. It is shown that the hardness of the detected carbides is 2 times higher than the hardness of the composite material. It has been established that the friction coefficient of the VT6 alloy under increased load decreases by 1.5 times after 20 min of testing, while the friction coefficient of the Ti₆Al₄V/CFs/Cr alloy remains stable and is 0.27 over the entire test interval.

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用激光直接沉积法合成 VT6 合金中的（钛、铬）xCy 碳化物

通过激光直接沉积材料（DLD）的方法，展示了在 Ti6Al4V 合金中形成 (Ti,Cr)xCy 型碳化物的可能性。合成(Ti,Cr)xCy型碳化物的新方法包括用铬对碳纤维进行初步激光熔覆，将其添加到VT6粉末混合物中，并熔化由此产生的DLD成分。这样就得到了一种新的 Ti6Al4V/CFs/Cr 合金。在碳纤维涂层（CF/Cr）中发现了 CrxCy 型碳化物的形成。在 CF/Cr 样品中出现 CrxCy 碳化物是由于激光加工过程中碳与铬的相互作用。Ti6Al4V/CFs/Cr 合金的平均显微硬度为 700 ± 100 HV0.01。同时，Ti6Al4V/CFs/Cr 合金中检测到的碳化物 (Ti,Cr)xCy 的硬度为 1000 ± 40 HV0.01。在 DLD 过程中，碳纤维可能完全或部分溶解。在复合材料 Ti6Al4V/CFs/Cr 中，形成了碳化物 (Ti,Cr)xCy。实验表明，检测到的碳化物的硬度比复合材料的硬度高 2 倍。试验结果表明，VT6 合金在增加载荷下的摩擦系数在试验 20 分钟后下降了 1.5 倍，而 Ti6Al4V/CFs/Cr 合金的摩擦系数在整个试验时间段内保持稳定，为 0.27。

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来源期刊

Inorganic Materials: Applied Research Engineering-Engineering (all)

CiteScore

0.90

自引率

0.00%

发文量

199

期刊介绍： Inorganic Materials: Applied Research contains translations of research articles devoted to applied aspects of inorganic materials. Best articles are selected from four Russian periodicals: Materialovedenie, Perspektivnye Materialy, Fizika i Khimiya Obrabotki Materialov, and Voprosy Materialovedeniya and translated into English. The journal reports recent achievements in materials science: physical and chemical bases of materials science; effects of synergism in composite materials; computer simulations; creation of new materials (including carbon-based materials and ceramics, semiconductors, superconductors, composite materials, polymers, materials for nuclear engineering, materials for aircraft and space engineering, materials for quantum electronics, materials for electronics and optoelectronics, materials for nuclear and thermonuclear power engineering, radiation-hardened materials, materials for use in medicine, etc.); analytical techniques; structure–property relationships; nanostructures and nanotechnologies; advanced technologies; use of hydrogen in structural materials; and economic and environmental issues. The journal also considers engineering issues of materials processing with plasma, high-gradient crystallization, laser technology, and ultrasonic technology. Currently the journal does not accept direct submissions, but submissions to one of the source journals is possible.