The investigation of the deformation wave hardening effect on the strength of the medium and low alloy steels

Kirichek, Andrey; Barinov, Sergey; Yashin, Aleksandr; Kolontsov, S E

doi:10.1088/1757-899x/177/1/012121

Cited by 6 publications

(2 citation statements)

References 5 publications

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“…Волновое деформационное упрочнение (ВДУ) является относительно новым способом поверхностного пластического деформирования (ППД), перспективной технологией, позволяющей создавать в поверхностном слое изделия многослойную гетерогенную, естественно армированную структуру [1,2]. Глубина упрочнения достигает 6-10 мм, что способствует повышению эксплуатационных свойств деталей машин в 3…6 раз [3]. Технология ВДУ позволяет увеличить несущую способность тяжелонагруженных ответственных деталей, повысить полезную нагрузку на материал, раскрыть резервы повышения тактико-технических характеристик изделий в авиации, космонавтике, автомобилестроении, общем машиностроении, инструментальном производстве, энергетической, нефтегазовой и строительной отраслях [4].…”

Section: Introductionunclassified

Material Models at Research of Wave Deformation Strengthening Through Finite Element Method

Kirichek

Barinov

Silantiev

et al. 2021

Bulletin of Bryansk State Technical University

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The problem of necessity in the development of loading environment models (materials processed) which has great importance at the finite element simulation of basic processes (technologies) is considered. As a rule, material model programs embedded into CAE cannot be used completely in the computations because of their limited set of physical-mechanical properties, most often insufficient for the adequate simulation of the process under investigation. By the example of the technology of wave deformation strengthening taking into account its peculiarities in the paper for the first time there are developed material models: steel45, BrAZh9-4; VT1-0; B-95 and the estimation of their adequacy is carried out. The creation of each model of material is a unique process and implies not only the pattern completion with data from reference books, but also with data obtained as a result of the fulfillment of corresponding experimental investigations of properties peculiar to material under working. As a result there are developed adequate models of materials having an admissible error (not exceeding 7.4%) for micro-hardness and depth of surface layer strengthening that allows recommending their use at the investigation of wave deformation strengthening through a finite element method.

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Section: Introductionunclassified

Material Models at Research of Wave Deformation Strengthening Through Finite Element Method

Kirichek

Barinov

Silantiev

et al. 2021

Bulletin of Bryansk State Technical University

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“…In terms of manufacturing process, piercing ammunition used during tests was made of forged structural alloy steel; on which several heat treatments were applied [1].…”

Section: Introductionmentioning

confidence: 99%

Design and Testing of a Thermobaric Piercing Projectile for 73 mm Recoilless Canon

Iorga¹,

Țigănescu²,

Marin³

et al. 2020

J.Mil.Technol.

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Urban area combat theaters require the use of portable weapons capable to neutralize targets inside buildings or light armored improvised vehicles. This work presents the design and testing of piercing ammunition for 73 mm recoilless canon with fragmentation and thermobaric effect. The advantages relative to its intended use are represented by its capability to pierce reinforced concrete and light armored targets, the fragmentation and thermobaric explosive delayed effect, capable to neutralize both soft targets and structures, and the reduced mass and dimensions of the armament system intended to be used. The warhead is composed of a piercing projectile with thin wall in order to accommodate an explosive charge with thermobaric effect, initiated by a bottom fuse. The warhead is coupled with a rocket motor in order to augment the initial velocity of the projectile for the maximization of the piercing capability. The paper presents the process of forging and machining of the warhead shell as well as the numerical simulation regarding the terminal ballistics of the ammunition, which was validated trough live fire experiments.

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Micro-Structural Changes in Steel 45 Caused by Wave Strain Strengthening

Киричек¹,

Kirichek

Баринов³

et al. 2017

Bulletin of Bryansk State Technical University

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МИКРОСТРУКТУРНЫЕ ИЗМЕНЕНИЯ В СТАЛИ 45, ВЫЗВАННЫЕ ВОЛНОВЫМ ДЕФОРМАЦИОННЫМ УПРОЧНЕНИЕМВ результате микроструктурных исследований образцов из стали 45 установлено, что с увеличени-ем равномерности волнового деформационного упрочнения в поверхностном слое протекает ряд процессов. При небольшой равномерности упроч-нения формируется развернутая на угол 45° волок-нистая структура и глобулярный феррит. При воз-растании равномерности упрочнения сначала про-исходит выстраивание перпендикулярно деформи-рующему усилию зоны полного диспергирования феррита и перлита, а затем образование высоко-дисперсных зон в форме линз -переупрочненных областей.Ключевые слова: микроструктура, упрочне-ние, волна деформации, феррит, перлит, равномер-ность, гетерогенность, глобулярность.A.V. Kirichek, S.V. Barinov, S.V. Davydov, A.V. Yashin, A.A. Zaitsev, A.M. Konstantinov MICRO-STRUCTURAL CHANGES IN STEEL 45 CAUSED BY WAVE STRAIN STRENGTHENINGThe application of surface plastic deformation (SPD) for the formation of a heterogeneous structure became possible with the advent of wave strain strengthening (WSS). In contrast to well-known SPD methods this method allows ensuring a required law of the distribution of solid and viscous areas at a large depth and ensures the absence of a sharp boundary between the areas with different hardness and viscosity which excludes stress concentration and does not cause micro-cracks nucleation. Earlier, with the aid of WSS one managed to increase a resistance to a contact crumbling by a factor of three -five times, and a breaking pointup to 8% on flat samples of steel 45. In the work there were carried out investigations of micro-structural changes occurred at different uniformities of the wave strain strengthening on flat samples of steel 45. As a result of investigations it was established that in a surface layer from the side of a deformation source with the increase of strengthening uniformity (from K = 0.2 up to K = 0.8), because of the increase of deformation impact density per unit area of a surface the thickness decrease of the visible grain deformation area takes place. The thickness increase of visible grain deformation area on the opposite (back) side begins with the value of K = 0.6 and higher. At WSS with surpassing K=0.2; 0.4, on the back side at K=0.8 there is arisen a formation of fibrous textured structure in which grains are unfolded to the angle of 38-41º. At the wave strain strengthening with K=0.4 there is determined a formation of globular ferrite in a surface layer.Key words: micro-structure, strengthening, deformation wave, ferrite, pearlite, uniformity, heterogeneity, globularity. ВведениеДостаточно большой интерес для со-временной промышленности представляют гетерогенные материалы, например соче-тающие высокие параметры ударной вяз-кости и твердости. Материалы с гетеро-генной структурой, в отличие от компози-ционных материалов, имеют однородный химический состав, а гетерогенные свой-ства задаются в гомогенном материале технологически, например термообработ-кой (ТО) или химико-термическ...

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The investigation of the deformation wave hardening effect on the strength of the medium and low alloy steels

Cited by 6 publications

References 5 publications

Material Models at Research of Wave Deformation Strengthening Through Finite Element Method

Material Models at Research of Wave Deformation Strengthening Through Finite Element Method

Design and Testing of a Thermobaric Piercing Projectile for 73 mm Recoilless Canon

Micro-Structural Changes in Steel 45 Caused by Wave Strain Strengthening

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