Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta最新文献_第6页

SCIENTIFIC BASIS OF DEVELOPMENT AND THE METHODOLOGY OF CREATION OF STEELS FOR THE PRODUCTION OF OILFIELD CASING AND TUBULAR GOODS WITH THE INCREASED STRENGTH AND CORROSION RESISTANCE 提高强度和耐腐蚀性能的油田套管和管材用钢的科学基础和制造方法

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-1-13-20

M. A. Vyboishchik, A. V. Ioffe, Llc “IT-Service”

引用次数: 0

INFLUENCE OF FORGING FORCE ON THE FORMATION OF THE STRUCTURE AND MECHANICAL PROPERTIES OF MEDIUM-CARBON STEELS WELDED JOINTS IN ROTARY FRICTION WELDING 锻造力对旋转摩擦焊中碳钢焊接接头组织和力学性能形成的影响

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-2-34-42

E. Kuzmina, E. Priymak

{"title":"INFLUENCE OF FORGING FORCE ON THE FORMATION OF THE STRUCTURE AND MECHANICAL PROPERTIES OF MEDIUM-CARBON STEELS WELDED JOINTS IN ROTARY FRICTION WELDING","authors":"E. Kuzmina, E. Priymak","doi":"10.18323/2073-5073-2019-2-34-42","DOIUrl":"https://doi.org/10.18323/2073-5073-2019-2-34-42","url":null,"abstract":": The increasing interest in the process of friction welding is associated with the wide spreading of this technology at the enterprises of mechanical engineering due to the technological advantages of this method and the high qua-lity of welded joints of the similar and dissimilar metals and alloys. Rotary friction welding (RFW) is one of the types of welding using friction heating and is used for parts having the shape of a cylinder or a pipe. The main technological parameters of the RFW process are the force during heating, forging force, the rotation frequency during heating, and the burning-off length. All parameters are interconnected and influence the process of formation and the properties of a welded joint. The paper stud ies the inﬂuence of forging pressure on microhardness, tensile properties, and microstructure of welded joints from 32-2-Mn and 40-Cr-Ni steels. The authors analyzed the phase transformations occurring in the materials to be welded as a result of high temperature and deformation effects. The study showed the change in the length of the thermomechanically affected zone (TMAZ) depending on forging pressure. The results of microhardness distribution along the weld seam illustrate the formation of hardened and weakened zones. The paper presents the results of the break-down and impact-viscosity tests of welded The showed the morphological features of in the after impact-bending tests.","PeriodicalId":23555,"journal":{"name":"Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88857891","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}

引用次数: 1

EFFECT OF IRON CONCENTRATION ON CRYSTALLIZATION OF AN AMORPHOUS ALLOY OF Co-Fe-B-Nb SYSTEM 铁浓度对Co-Fe-B-Nb系非晶合金结晶的影响

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-4-13-18

N. Volkov, G. Abrosimova

引用次数: 0

TITANIUM-ZIRCONIUM COATINGS FORMED BY ELECTRICAL EXPLOSION METHOD ON A TITANIUM IMPLANT SURFACE 电爆炸法在钛植入体表面形成钛锆涂层

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-3-54-60

K. Sosnin, D. Romanov, V. Gromov, Y. Ivanov

引用次数: 0

THE ELASTOPLASTIC PROPERTIES OF THE TRABECULAR BONE TISSUE 骨小梁组织的弹塑性特性

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-4-45-51

G. P. Panfilov, M. V. Gilev, M. Izmodenova, D. Zaytsev

{"title":"THE ELASTOPLASTIC PROPERTIES OF THE TRABECULAR BONE TISSUE","authors":"G. P. Panfilov, M. V. Gilev, M. Izmodenova, D. Zaytsev","doi":"10.18323/2073-5073-2019-4-45-51","DOIUrl":"https://doi.org/10.18323/2073-5073-2019-4-45-51","url":null,"abstract":": The trabecular bone tissue is a natural composite material with the developed hierarchical structure. The detailed study of its mechanical properties is important both for understanding the mechanism of injury production and for developing the optimal designs for osteosynthesis, prosthetics, and replacement of bone defects. The study of mechanical behavior of the trabecular bone under the cyclic loading is fundamental for the formation of current approaches to the prevention, as well as to the conservative and surgical treatment of fractures, as the bone tissue has different strength in different parts of the skeleton. The authors studied the uniaxial compression deformation behavior using five cylindrical specimens made from fragments of the trabecular bone tissue of lateral condyle of the tibia. The ratios of elastic and nonreversible deformations in the trabecular bone tissue of the subchondral area of the tibia under the uniaxial compression were investigated depending on the magnitude of the applied load and the total deformation. The authors carried out phased loading with the step of 0.5 % to 10 % of deformation and then with the step of 1 % to 15 % of deformation. The study showed that the trabecular bone is deformable both elastically and plastically. The elastic properties of bone tissue slightly decrease only with the appearance of macroscopic cracks in the sample. Thanks to the high porosity (30–90 %) and organic components, the trabecular bone is significantly deformable. The deformation of less than ~3 % is elastic and, therefore, does not lead to nonreversible changes in the trabecular bone tissue. With deformations exceeding 3 %, the nonreversible changes in the microstructure causing a depressed fracture of the limb bones take place in the bone tissue.","PeriodicalId":23555,"journal":{"name":"Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta","volume":"185 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80584313","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}

引用次数: 0

CREATION OF MOLYBDENUM-COPPER COMPOSITES USING THE SPARK PLASMA SINTERING METHOD AND THE STUDY OF THEIR CHARACTERISTIC 火花等离子烧结法制备钼铜复合材料及其性能研究

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-3-40-46

A. Sivkov, A. Ivashutenko, Y. Shanenkova, Y. Vympina

引用次数: 0

DETERMINATION OF LOADS FOR STRENGTH CALCULATIONS OF THE ATTACHMENT FITTINGS OF THE DEVICES AND ASSEMBLIES OF A SPACECRAFT IN A POWERED FLIGHT 动力飞行中航天器装置和组件的连接配件强度计算用载荷的测定

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-1-50-57

A. Popkov, V. A. Filatov, A. Filipov

引用次数: 0

THE INFLUENCE OF LOW-TEMPERATURE PLASMA MODIFICATION WITH CARBON AND NITROGEN ON THE HARDENING AND SURFACE ROUGHNESS OF AUSTENITIC STAINLESS STEEL 低温等离子体碳氮改性对奥氏体不锈钢硬化和表面粗糙度的影响

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-4-58-64

P. Skorynina, A. Makarov, A. Menshakov, A. Osintseva, M. A. Chalina,

引用次数: 0

TEST STAND FOR LOW-FREQUENCY CALIBRATION OF ACCELEROMETERS 用于加速度计低频校准的试验台

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-2-18-26

M. Zakharchenko, A. Kuznetsov, A. Yakovishin, V. P. Batischev, B. N. Kostyanchuk, O. Zakharov

引用次数: 0

COMPLEX PARAMETER OF DURABILITY OF SUPPORT PLATES OF CUTTING ELEMENTS OF BLOCK-MODULAR CUTTERS 块模切割机切削元件支承板耐久性复杂参数

Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta Pub Date : 2019-01-01 DOI: 10.18323/2073-5073-2019-2-27-33

A. Kravtsov

{"title":"COMPLEX PARAMETER OF DURABILITY OF SUPPORT PLATES OF CUTTING ELEMENTS OF BLOCK-MODULAR CUTTERS","authors":"A. Kravtsov","doi":"10.18323/2073-5073-2019-2-27-33","DOIUrl":"https://doi.org/10.18323/2073-5073-2019-2-27-33","url":null,"abstract":": The author considered the issues of working capacity improvement of multi-element cutting tools (in terms of such operational characteristics as, for example, the intensity of breakdowns of cutting element and its support plates, etc.) by changing the regulation of status parameters of a surface layer of their parts. The weakness and low reliability of cutters prove the necessity in the elements with the defined properties within the cutting tools structure. The shape of the cutting element supporting surface influences the specified properties of cutting tool parts. The author considered the shape of a profile of cutting element supporting surface in the form of two irregularities located at a dis-tance of waviness step (in the form of oil pockets). The profile shape is considered as a stress concentrator. According to the decrease in the concentrator durability period, the study determined which parameters influence the durability. Cutting element reacts to the cutting force load and transmits it to other parts of a cutting tool through its base and fastening nodes. The author surface status complex which includes the achievement of life duration with the dominating influence of height and step roughness and waviness parameters. The calculation is carried out in the base and fastening nodes of a cutting element. In the base nodes, normal stresses dominate on the surface; in the fastening nodes, tangential stresses prevail. It is shown that normal and tangential stresses are equal. how (break-ing-in) cutter. both by the of and more) and by the resulting from their High vi-brations (amplitude and frequency of technological system), wear of low toughness and high sup-pleness of joints are the peculiarities of operational","PeriodicalId":23555,"journal":{"name":"Vektor nauki Tol'yattinskogo gosudarstvennogo universiteta","volume":"162 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74203550","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}

引用次数: 0