{"title":"Atomic Structure of Ti2NiCu Alloy after Severe Plastic Deformation by High Pressure Torsion and Heat Treatment","authors":"N. N. Kuranova, V. V. Makarov, V. G. Pushin","doi":"10.1134/s0031918x23602366","DOIUrl":null,"url":null,"abstract":"<h3 data-test=\"abstract-sub-heading\">Abstract</h3><p>The paper presents the results of a comparative analysis of the structure of Ti<sub>2</sub>NiCu alloy subjected to severe plastic deformation by high pressure torsion and subsequent annealing. The structure of the alloy was studied using diffractometry, electron microscopy, X-ray and neutron techniques, as well as transmission electron microscopy. The analysis has revealed the formation of an amorphous-crystalline state within the alloy, with <i>B</i>2-lattice nanocrystallites present in the amorphous matrix. The analysis of diffuse maxima has indicated that the Ti<sub>2</sub>NiCu alloy, after subjecting to high pressure torsions till five turns, possesses topological and compositional short-range order in the form of nanodomains with a superstructure arranged by <i>B</i>2 and <i>L</i>2<sub>1</sub> order.</p>","PeriodicalId":20180,"journal":{"name":"Physics of Metals and Metallography","volume":"7 1","pages":""},"PeriodicalIF":1.1000,"publicationDate":"2024-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of Metals and Metallography","FirstCategoryId":"88","ListUrlMain":"https://doi.org/10.1134/s0031918x23602366","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"METALLURGY & METALLURGICAL ENGINEERING","Score":null,"Total":0}
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Abstract
The paper presents the results of a comparative analysis of the structure of Ti2NiCu alloy subjected to severe plastic deformation by high pressure torsion and subsequent annealing. The structure of the alloy was studied using diffractometry, electron microscopy, X-ray and neutron techniques, as well as transmission electron microscopy. The analysis has revealed the formation of an amorphous-crystalline state within the alloy, with B2-lattice nanocrystallites present in the amorphous matrix. The analysis of diffuse maxima has indicated that the Ti2NiCu alloy, after subjecting to high pressure torsions till five turns, possesses topological and compositional short-range order in the form of nanodomains with a superstructure arranged by B2 and L21 order.
期刊介绍：
The Physics of Metals and Metallography (Fizika metallov i metallovedenie) was founded in 1955 by the USSR Academy of Sciences. Its scientific profile involves the theory of metals and metal alloys, their electrical and magnetic properties, as well as their structure, phase transformations, and principal mechanical properties. The journal also publishes scientific reviews and papers written by experts involved in fundamental, application, and technological studies. The annual volume of publications amounts to some 250 papers submitted from 100 leading national scientific institutions.
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