Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-439-444
R. Safiullin, V. Valitov, R. Lutfullin, E. Galieva, E. Klassman
{"title":"Superplastic forming of EK61 nickel-based superalloy with ultrafine-grained structure","authors":"R. Safiullin, V. Valitov, R. Lutfullin, E. Galieva, E. Klassman","doi":"10.22226/2410-3535-2022-4-439-444","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-439-444","url":null,"abstract":"","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44200953","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-433-438
Y. Ivanov, V. Shugurov, E. Petrikova, N. Prokopenko, A. Teresov, O. Tolkachev
The structure and properties of a high-entropy alloy (HEA) subjected to saturation with boron atoms by a combined electron-ion-plasma method are characterized. On a HEA film of 5 μm thickness deposited on AISI 304 steel, a film (boron + chromium) with a thickness of 1 μm was deposited and then the system “(Cr + B) film / (HEA film deposited on AISI 304 steel) substrate” was irradiated with a pulsed electron beam. It is shown that the wear resistance of the resulting alloy is more than 30 times higher than that of the original HEA film. The microhardness of the alloy is 10.5 % higher than that of HEA in the initial state. It has been revealed that irradiation of the system with a pulsed electron beam leads to the formation of a multi-element surface alloy of composition (at.%) 5.8Al-11.6Ti-12.9Cr-13.0Fe-2.4Ni-13.1Cu-10.4Zr-8.8Nb, the rest (22 at.%) is oxygen and boron. Thus, seven-element HEA of non-stoichiometric composition, the concentration of metal elements of which varies within (5.8 –13.0) at.%, and additionally containing atoms of nickel, oxygen and boron was formed. It has been established that the high tribological and strength properties of the surface alloy are due to the formation of a multiphase submicron-nanocrystalline structure of high-speed cellular crystallization in the modified layer 6 µm thick. High-speed crystallization is accompanied by alloy delamination with the formation of extended interlayers enriched with copper atoms located along the boundaries of crystallization cells.
{"title":"Electron-ion-plasma boriding of a multilayer nanostructural high-entropy alloy","authors":"Y. Ivanov, V. Shugurov, E. Petrikova, N. Prokopenko, A. Teresov, O. Tolkachev","doi":"10.22226/2410-3535-2022-4-433-438","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-433-438","url":null,"abstract":"The structure and properties of a high-entropy alloy (HEA) subjected to saturation with boron atoms by a combined electron-ion-plasma method are characterized. On a HEA film of 5 μm thickness deposited on AISI 304 steel, a film (boron + chromium) with a thickness of 1 μm was deposited and then the system “(Cr + B) film / (HEA film deposited on AISI 304 steel) substrate” was irradiated with a pulsed electron beam. It is shown that the wear resistance of the resulting alloy is more than 30 times higher than that of the original HEA film. The microhardness of the alloy is 10.5 % higher than that of HEA in the initial state. It has been revealed that irradiation of the system with a pulsed electron beam leads to the formation of a multi-element surface alloy of composition (at.%) 5.8Al-11.6Ti-12.9Cr-13.0Fe-2.4Ni-13.1Cu-10.4Zr-8.8Nb, the rest (22 at.%) is oxygen and boron. Thus, seven-element HEA of non-stoichiometric composition, the concentration of metal elements of which varies within (5.8 –13.0) at.%, and additionally containing atoms of nickel, oxygen and boron was formed. It has been established that the high tribological and strength properties of the surface alloy are due to the formation of a multiphase submicron-nanocrystalline structure of high-speed cellular crystallization in the modified layer 6 µm thick. High-speed crystallization is accompanied by alloy delamination with the formation of extended interlayers enriched with copper atoms located along the boundaries of crystallization cells.","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43924478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-303-308
G. Poletaev, Yuriy Bebikhov, A. Semenov, R. Rakitin
{"title":"Interaction of an edge dislocation with a 〈110〉 tilt boundary in nickel: molecular dynamics simulation","authors":"G. Poletaev, Yuriy Bebikhov, A. Semenov, R. Rakitin","doi":"10.22226/2410-3535-2022-4-303-308","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-303-308","url":null,"abstract":"","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45403121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-287-291
L. Afanasieva, I. Pavlov
{"title":"Microstructure of the deposited NiCrBSiC coating after laser polishing","authors":"L. Afanasieva, I. Pavlov","doi":"10.22226/2410-3535-2022-4-287-291","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-287-291","url":null,"abstract":"","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49248494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-327-331
V. Mukhamadeeva, S. Stepanov, K. Zvezdin, E. Ekomasov
{"title":"Influence of the thickness of a nonmagnetic layer on the coupled dynamics of magnetic vortices in a spin-transfer nanooscillator","authors":"V. Mukhamadeeva, S. Stepanov, K. Zvezdin, E. Ekomasov","doi":"10.22226/2410-3535-2022-4-327-331","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-327-331","url":null,"abstract":"","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48669686","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-360-366
K. Nazarov, G. Korznikova, R. Khisamov, R. Timiryaev, E. Korznikova, G. Khalikova, R. Shayakhmetov, S. Sergeyev, R. Kabirov, R. Mulyukov
{"title":"Mechanical properties of Al-Nb in situ metal-matrix composites fabricated by constrained high pressure torsion at 10 GPa and subsequent annealing","authors":"K. Nazarov, G. Korznikova, R. Khisamov, R. Timiryaev, E. Korznikova, G. Khalikova, R. Shayakhmetov, S. Sergeyev, R. Kabirov, R. Mulyukov","doi":"10.22226/2410-3535-2022-4-360-366","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-360-366","url":null,"abstract":"","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48893824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-321-326
S. Sakhapov, V. Andryushchenko, E. Boyko, Mikhail Skirda, D. Smovzh
{"title":"Experimental and theoretical study of the conditions for the formation of carbon nanostructures in an arc discharge in helium, argon and nitrogen","authors":"S. Sakhapov, V. Andryushchenko, E. Boyko, Mikhail Skirda, D. Smovzh","doi":"10.22226/2410-3535-2022-4-321-326","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-321-326","url":null,"abstract":"","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48210225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-475-479
D. Smovzh, M. Skirda, S. Sakhapov
{"title":"Electric arc synthesis of magnetic Mn-Fe-C nanoparticles","authors":"D. Smovzh, M. Skirda, S. Sakhapov","doi":"10.22226/2410-3535-2022-4-475-479","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-475-479","url":null,"abstract":"","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46137866","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-424-427
D. Gunderov, S. Gunderova, D. Magomedova
{"title":"True fracture stress of UFG samples of Al 6101 alloy","authors":"D. Gunderov, S. Gunderova, D. Magomedova","doi":"10.22226/2410-3535-2022-4-424-427","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-424-427","url":null,"abstract":"","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46293313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-12-01DOI: 10.22226/2410-3535-2022-4-298-302
K. Shakhnazarov, Evgeniy Pryakhin, E. Troshina
{"title":"Rationale for signs of transformation in iron near 200°C","authors":"K. Shakhnazarov, Evgeniy Pryakhin, E. Troshina","doi":"10.22226/2410-3535-2022-4-298-302","DOIUrl":"https://doi.org/10.22226/2410-3535-2022-4-298-302","url":null,"abstract":"","PeriodicalId":45792,"journal":{"name":"Letters on Materials","volume":" ","pages":""},"PeriodicalIF":0.7,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41367203","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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