{"title":"用激光直接沉积法合成 VT6 合金中的（钛、铬）xCy 碳化物","authors":"A. I. Gorunov","doi":"10.1134/S2075113324701107","DOIUrl":null,"url":null,"abstract":"<p>The possibility of forming carbides of the (Ti,Cr)<sub><i>x</i></sub>C<sub><i>y</i></sub> type in the Ti<sub>6</sub>Al<sub>4</sub>V 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)<sub><i>x</i></sub>C<sub><i>y</i></sub> 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 Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr alloy was obtained. The formation of carbides of the Cr<sub><i>x</i></sub>C<sub><i>y</i></sub> type was revealed in the coating on carbon fibers (CF/Cr). The appearance of Cr<sub><i>x</i></sub>C<sub><i>y</i></sub> 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 Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr alloy was 700 ± 100 HV<sub>0.01</sub>. At the same time, the hardness of the detected carbides (Ti,Cr)<sub><i>x</i></sub>C<sub><i>y</i></sub> in the Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr alloy was 1000 ± 40 HV<sub>0.01</sub>. During the DLD process, the carbon fiber can be completely or partially dissolved. In the composite material Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr, carbides (Ti,Cr)<sub><i>x</i></sub>C<sub><i>y</i></sub> 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 Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr alloy remains stable and is 0.27 over the entire test interval.</p>","PeriodicalId":586,"journal":{"name":"Inorganic Materials: Applied Research","volume":"15 5","pages":"1437 - 1443"},"PeriodicalIF":0.5000,"publicationDate":"2024-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Synthesis of (Ti, Cr)xCy Carbides in VT6 Alloy by Direct Laser Deposition\",\"authors\":\"A. I. Gorunov\",\"doi\":\"10.1134/S2075113324701107\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>The possibility of forming carbides of the (Ti,Cr)<sub><i>x</i></sub>C<sub><i>y</i></sub> type in the Ti<sub>6</sub>Al<sub>4</sub>V 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)<sub><i>x</i></sub>C<sub><i>y</i></sub> 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 Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr alloy was obtained. The formation of carbides of the Cr<sub><i>x</i></sub>C<sub><i>y</i></sub> type was revealed in the coating on carbon fibers (CF/Cr). The appearance of Cr<sub><i>x</i></sub>C<sub><i>y</i></sub> 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 Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr alloy was 700 ± 100 HV<sub>0.01</sub>. At the same time, the hardness of the detected carbides (Ti,Cr)<sub><i>x</i></sub>C<sub><i>y</i></sub> in the Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr alloy was 1000 ± 40 HV<sub>0.01</sub>. During the DLD process, the carbon fiber can be completely or partially dissolved. In the composite material Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr, carbides (Ti,Cr)<sub><i>x</i></sub>C<sub><i>y</i></sub> 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 Ti<sub>6</sub>Al<sub>4</sub>V/CFs/Cr alloy remains stable and is 0.27 over the entire test interval.</p>\",\"PeriodicalId\":586,\"journal\":{\"name\":\"Inorganic Materials: Applied Research\",\"volume\":\"15 5\",\"pages\":\"1437 - 1443\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2024-10-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Inorganic Materials: Applied Research\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S2075113324701107\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganic Materials: Applied Research","FirstCategoryId":"1085","ListUrlMain":"https://link.springer.com/article/10.1134/S2075113324701107","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Synthesis of (Ti, Cr)xCy Carbides in VT6 Alloy by Direct Laser Deposition
The possibility of forming carbides of the (Ti,Cr)xCy 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)xCy 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 CrxCy type was revealed in the coating on carbon fibers (CF/Cr). The appearance of CrxCy 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 HV0.01. At the same time, the hardness of the detected carbides (Ti,Cr)xCy in the Ti6Al4V/CFs/Cr alloy was 1000 ± 40 HV0.01. During the DLD process, the carbon fiber can be completely or partially dissolved. In the composite material Ti6Al4V/CFs/Cr, carbides (Ti,Cr)xCy 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.
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.
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