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Izák J, Benč M, Kunčická L, Opěla P, Kocich R. Influence of Imposed Strain on Weldability of Dievar Alloy. MATERIALS (BASEL, SWITZERLAND) 2024; 17:2317. [PMID: 38793384 PMCID: PMC11123005 DOI: 10.3390/ma17102317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 05/05/2024] [Accepted: 05/10/2024] [Indexed: 05/26/2024]
Abstract
The presented work is focused on the influence of imposed strain on the weldability of Dievar alloy. Two mechanisms affecting the microstructure and thus imparting changes in the mechanical properties were applied-heat treatment (hardening and tempering), and rotary swaging. The processed workpieces were further subjected to welding with various welding currents. In order to characterize the effects of welding on the microstructure, especially in the heat-affected zone, and determine material stability under elevated temperatures, samples for uniaxial hot compression testing at temperatures from 600 to 900 °C, optical and scanning electron microscopy, and microhardness testing were taken. The testing revealed that, although the rotary swaged and heat-treated samples featured comparable microhardness, the strength of the swaged material was approximately twice as high as that of the heat-treated one-specifically 1350 MPa. Furthermore, it was found that the rotary swaged sample exhibited favorable welding behavior when compared to the heat-treated one, when the higher welding current was applied.
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Affiliation(s)
- Josef Izák
- Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896, 616 00 Brno, Czech Republic
| | - Marek Benč
- Department of Metallurgical Technologies, Faculty of Materials Science and Technology, VŠB Technical University of Ostrava, 17. Listopadu 2172-15, 708 00 Ostrava, Czech Republic; (M.B.); (P.O.)
| | - Lenka Kunčická
- Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896, 616 00 Brno, Czech Republic
- Institute of Physics of Materials, Czech Academy of Science, Žižkova 22, 616 00 Brno, Czech Republic
| | - Petr Opěla
- Department of Metallurgical Technologies, Faculty of Materials Science and Technology, VŠB Technical University of Ostrava, 17. Listopadu 2172-15, 708 00 Ostrava, Czech Republic; (M.B.); (P.O.)
| | - Radim Kocich
- Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896, 616 00 Brno, Czech Republic
- Department of Metallurgical Technologies, Faculty of Materials Science and Technology, VŠB Technical University of Ostrava, 17. Listopadu 2172-15, 708 00 Ostrava, Czech Republic; (M.B.); (P.O.)
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Zhangabay N, Sapargaliyeva B, Suleimenov U, Abshenov K, Utelbayeva A, Kolesnikov A, Baibolov K, Fediuk R, Arinova D, Duissenbekov B, Seitkhanov A, Amran M. Analysis of Stress-Strain State for a Cylindrical Tank Wall Defected Zone. MATERIALS (BASEL, SWITZERLAND) 2022; 15:5732. [PMID: 36013864 PMCID: PMC9413054 DOI: 10.3390/ma15165732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 08/14/2022] [Accepted: 08/15/2022] [Indexed: 06/15/2023]
Abstract
In the study, experimental and theoretical studies were carried out to assess the influence of the shapes of dents in the tank wall on the stress-strain state of the defect zone. By testing fragments of a cylindrical tank, it was found that the most appropriate expression is (5), which could take into account the leaching of the tank wall, resulting in a decrease in the stress concentration index. At the same time, during theoretical studies in this paper, it was found that polynomials determined the stress concentration coefficient, where the obtained analytical expression data were compared with the data determined numerically in the ANSYS program, and it was found that the spread was from 2% to 10%. According to the results of a numerical study of the stress-strain state of the dent zone in the tank wall, graphical dependences of the stress concentration coefficient on the dimensionless depth of the dent for various values of the dimensionless radius of the dents and do not exceed 2% of the indicators that are obtained. At the conclusion of the experimental and numerical studies, a conclusion was made about the degree of influence of the geometric dimensions of the dents on the stress concentration index.
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Affiliation(s)
- Nurlan Zhangabay
- Department of “Construction and Construction Materials”, M. Auezov South Kazakhstan University, Av. Tauke Khan, 5, Shymkent 160012, Kazakhstan
| | | | - Ulanbator Suleimenov
- Department of “Architecture”, M. Auezov South Kazakhstan University, Av. Tauke Khan, 5, Shymkent 160012, Kazakhstan
| | - Khassen Abshenov
- Department of “Mechanics and Mechanical Engineering”, M. Auezov South Kazakhstan University, Av. Tauke Khan, 5, Shymkent 160012, Kazakhstan
| | - Akmaral Utelbayeva
- Department of “Chemistry”, M. Auezov South Kazakhstan University, Av. Tauke Khan, 5, Shymkent 160012, Kazakhstan
| | - Alexandr Kolesnikov
- Department of “Life Safety and Environmental Protection”, M. Auezov South Kazakhstan University, Av. Tauke Khan, 5, Shymkent 160012, Kazakhstan
| | - Kanat Baibolov
- Peoples Friendship University Named after Academician A. Kuatbekov, Str., Tolebi n/n, Shymkent 160012, Kazakhstan
| | - Roman Fediuk
- Polytechnic Institute, Far Eastern Federal University, 690922 Vladivostok, Russia
- Peter the Great St. Petersburg Polytechnic University, 195251 Saint Petersburg, Russia
| | - Dinara Arinova
- Department of “Mechanics and Mechanical Engineering”, M. Auezov South Kazakhstan University, Av. Tauke Khan, 5, Shymkent 160012, Kazakhstan
| | - Bolat Duissenbekov
- Department of “Construction and Construction Materials”, M. Auezov South Kazakhstan University, Av. Tauke Khan, 5, Shymkent 160012, Kazakhstan
| | - Azamat Seitkhanov
- Department of “Mechanics and Mechanical Engineering”, M. Auezov South Kazakhstan University, Av. Tauke Khan, 5, Shymkent 160012, Kazakhstan
| | - Mugahed Amran
- Department of Civil Engineering, College of Engineering, Prince Sattam Bin Abdulaziz University, Alkharj 16273, Saudi Arabia
- Department of Civil Engineering, Faculty of Engineering and IT, Amran University, Amran 9677, Yemen
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Zhangabay N, Sapargaliyeva B, Utelbayeva A, Kolesnikov A, Aldiyarov Z, Dossybekov S, Esimov E, Duissenbekov B, Fediuk R, Vatin NI, Yermakhanov M, Mussayeva S. Experimental Analysis of the Stress State of a Prestressed Cylindrical Shell with Various Structural Parameters. MATERIALS (BASEL, SWITZERLAND) 2022; 15:4996. [PMID: 35888463 PMCID: PMC9315750 DOI: 10.3390/ma15144996] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/07/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 02/01/2023]
Abstract
The paper presents the results of experimental studies of the features of the operation of prestressed shells, taking into account the various structural parameters of the prestress. It is established that when the winding angle changes from perpendicular to the shell axis to 75° and 65°, the circumferential stresses decrease 1.4 times and 1.2 times, respectively, and the axial stresses increase five and three times, which are two and four times lower than the circumferential, from which it can be concluded that the reduction in the winding angle to the longitudinal the axis of the shell has a positive effect on the stress state of the structure. The study also found that with an increase in the diameter of the winding wire from 1 to 2 mm and a change in the winding angle, the same nature of the stress distribution is observed, but the values of the stress state parameter change, so the efficiency increases up to 25% due to an increase in the winding thickness, depending on the pitch, angle and thickness of the winding, which favorably affects the strength and the bearing capacity of the structure as a whole by increasing the value of the stress state parameter. Thus, the results of the analysis will allow us to use in more detail the possibility of controlling the stress-strain state of the prestressed shell by changing the design parameters, and the results obtained can be used in design or construction, as well as when increasing the strength characteristics of the structure, which allows us to create a high-tech design optimal for these operating conditions, which can positively complement the studies conducted earlier in this direction.
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Affiliation(s)
- Nurlan Zhangabay
- Department of Construction and Construction Materials, M. Auezov South Kazakhstan University Shymkent, Shymkent 160012, Kazakhstan; (N.Z.); (Z.A.); (S.D.); (E.E.); (B.D.); (M.Y.); (S.M.)
| | | | - Akmaral Utelbayeva
- Department of Construction and Construction Materials, M. Auezov South Kazakhstan University Shymkent, Shymkent 160012, Kazakhstan; (N.Z.); (Z.A.); (S.D.); (E.E.); (B.D.); (M.Y.); (S.M.)
| | - Alexandr Kolesnikov
- Department of Construction and Construction Materials, M. Auezov South Kazakhstan University Shymkent, Shymkent 160012, Kazakhstan; (N.Z.); (Z.A.); (S.D.); (E.E.); (B.D.); (M.Y.); (S.M.)
| | - Zhumadilla Aldiyarov
- Department of Construction and Construction Materials, M. Auezov South Kazakhstan University Shymkent, Shymkent 160012, Kazakhstan; (N.Z.); (Z.A.); (S.D.); (E.E.); (B.D.); (M.Y.); (S.M.)
| | - Serik Dossybekov
- Department of Construction and Construction Materials, M. Auezov South Kazakhstan University Shymkent, Shymkent 160012, Kazakhstan; (N.Z.); (Z.A.); (S.D.); (E.E.); (B.D.); (M.Y.); (S.M.)
| | - Esenbek Esimov
- Department of Construction and Construction Materials, M. Auezov South Kazakhstan University Shymkent, Shymkent 160012, Kazakhstan; (N.Z.); (Z.A.); (S.D.); (E.E.); (B.D.); (M.Y.); (S.M.)
| | - Bolat Duissenbekov
- Department of Construction and Construction Materials, M. Auezov South Kazakhstan University Shymkent, Shymkent 160012, Kazakhstan; (N.Z.); (Z.A.); (S.D.); (E.E.); (B.D.); (M.Y.); (S.M.)
| | - Roman Fediuk
- Polytechnic Institute, Far Eastern Federal University, 690922 Vladivostok, Russia
- Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia;
| | | | - Myrzabek Yermakhanov
- Department of Construction and Construction Materials, M. Auezov South Kazakhstan University Shymkent, Shymkent 160012, Kazakhstan; (N.Z.); (Z.A.); (S.D.); (E.E.); (B.D.); (M.Y.); (S.M.)
| | - Saule Mussayeva
- Department of Construction and Construction Materials, M. Auezov South Kazakhstan University Shymkent, Shymkent 160012, Kazakhstan; (N.Z.); (Z.A.); (S.D.); (E.E.); (B.D.); (M.Y.); (S.M.)
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