scholarly journals The Strength of Inconel 625, Manufactured by the Method of Direct Laser Deposition under Sub-Microsecond Load Duration

Metals ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1796
Author(s):  
Vladimir Promakhov ◽  
Nikita Schulz ◽  
Alexander Vorozhtsov ◽  
Andrey Savinykh ◽  
Gennady Garkushin ◽  
...  
Keyword(s):  
Elastic Limit ◽  
Structural Parameters ◽  
Spall Strength ◽  
Laser Deposition ◽  
Inconel 625 ◽  
Chromium Alloy ◽  
Hugoniot Elastic Limit ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Wave Profiles

This paper presents the results of measurements of the spall strength and elastic-plastic proper-ties, under dynamic and static loads, of the high-strength heat-resistant nickel-chromium alloy Inconel 625, obtained by the direct laser deposition method. The structural parameters of the obtained samples and the mechanical properties during static tests were studied. According to our information, anisotropy in the structural parameters operates primarily at the level of plastic deformation of alloys. Shock compression of the additive alloy Inconel 625 samples in the range of 6–18 GPa was carried out using a light-gas gun, both along and perpendicular to the direction of the deposition. The strength characteristics were determined from the analysis of the shock wave profiles, which were recorded using the VISAR laser velocimeter during the loading of samples. It was found that the value of the spall strength of additive samples does not depend on the direction of deposition, and the Hugoniot elastic limit of samples loaded perpendicular to the deposition direction is about ~10% higher. With an increase in the maximum compression stress, the material’s spall strength increases slightly, but for both types of samples, a slight decrease in the Hugoniot elastic limit was observed as the compression stresses increase. On the basis of the measured wave profiles, shock Hugoniots of the samples of the alloy Inconel 625, loaded both along and perpendicular to the direction of deposition, are constructed in this pressure range.

scholarly journals High-Strain Deformation and Spallation Strength of 09CrNi2MoCu Steel Obtained by Direct Laser Deposition

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1305
Author(s):  
Olga Klimova-Korsmik ◽  
Gleb Turichin ◽  
Ruslan Mendagaliyev ◽  
Sergey Razorenov ◽  
Gennady Garkushin ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Elastic Limit ◽  
Spall Strength ◽  
High Strength ◽  
Strength Properties ◽  
Laser Deposition ◽  
Initial State ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Hot Rolled

In this work, the critical fracture stresses during spalling of high-strength steel 09CrNi2MoCu samples obtained by direct laser deposition (DLD) were measured under shock compression of up to ~5.5 GPa. The microstructure and mechanical properties of DLD steel samples in the initial state and after heat treatment were studied and compared to traditional hot rolled one. The microstructural features of steel before and after heat treatment were revealed. The heat treatment modes of the deposit specimens on their strength properties under both static and dynamic loads have been investigated. The spall strength of the deposited specimens is somewhat lower than the strength of steel specimens after hot rolling regardless of their heat treatment. The minimum elastic limit of elasticity is exhibited by the deposit specimens. After heat treatment of the deposit samples, the elastic limit increases and approximately doubles. Subsequent heat treatment in the form of hardening and tempering allows obtaining strength properties under Hugoniot loads in traditional hot-rolled products.

scholarly journals Прочностные свойства полученной с применением аддитивной технологии керамики на основе оксида алюминия при ударно-волновом нагружении

2018 ◽  
Vol 44 (19) ◽  
pp. 96
Author(s):  
В.В. Промахов ◽  
А.С. Савиных ◽  
Я.А. Дубкова ◽  
Н.А. Шульц ◽  
Н.В. Грунт ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Shock Compression ◽  
Elastic Limit ◽  
Laser Interferometer ◽  
Spall Strength ◽  
Oxide Ceramic ◽  
Hugoniot Elastic Limit ◽  
Full Wave ◽  
Ceramic Samples ◽  
Wave Profiles

AbstractAluminum-oxide ceramic samples have been prepared by additive manufacturing with subsequent sintering. The Hugoniot elastic limit and spall strength of the ceramics are determined by analyzing the full wave profiles of the samples recorded using a laser interferometer upon their shock compression with amplitudes of 6.8 and 13.8 GPa.

scholarly journals Исследование скоростных зависимостей напряжения пластического течения и разрушения стали 09Г2СА-А при нормальной и повышенной температурах

2021 ◽  
Vol 91 (11) ◽  
pp. 1698
Author(s):  
Г.И. Канель ◽  
Г.В. Гаркушин ◽  
А.С. Савиных ◽  
С.В. Разоренов ◽  
С.А. Атрошенко
Keyword(s):  
Fracture Zone ◽  
Elastic Limit ◽  
Elevated Temperatures ◽  
Armco Iron ◽  
High Strain ◽  
Spall Strength ◽  
Metallographic Analysis ◽  
Hugoniot Elastic Limit ◽  
Wave Profiles ◽  
Temperature Rate

The Hugoniot elastic limit and spall strength of reactor steel 09G2SA-A under shock compression were measured by recording and subsequent analysis of the wave profiles. The temperature-rate dependences of the resistance to high-strain rate and fracture of steel at normal and elevated temperatures are determined. The results of measurements of the strength characteristics of steel under spall are supplemented by a metallographic analysis of the fracture zone and compared with data for 15Kh2NMFA reactor steel and Armco iron.

scholarly journals Inconel 625/TiB2 Metal Matrix Composites by Direct Laser Deposition

Metals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 141 ◽  
Author(s):  
Vladimir Promakhov ◽  
Alexander Zhukov ◽  
Mansur Ziatdinov ◽  
Ilya Zhukov ◽  
Nikita Schulz ◽  
...  
Keyword(s):  
Metal Matrix Composites ◽  
Metal Matrix ◽  
Laser Deposition ◽  
Inconel 625 ◽  
Matrix Composites ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Inconel 625 Alloy ◽  
Manufacturing Technologies ◽  
Tib2 Particles

This work presents results in the field of synthesis of new metal matrix composites with matrix NiTi and particles TiB2, and their use as additives to fabricate metal matrix composites based on the Inconel 625 alloy. NiTi-TB2 powders were obtained using self-propagating high-temperature synthesis. Composite NiTi-TiB2 particles were spheroidized on a high-frequency induction plasmatron. Composite NiTi-TB2 particles were mixed with metallic Inconel 625 powder with particle sizes of 50–150 µm. We used direct laser deposition by means of mixture of powders to grow samples with different contents of ceramics in the metal matrix. The process of direct laser deposition during the experiment was investigated. We have determined the peculiarities of the formation of the structure in metal matrix composites with different contents of titanium diboride. We have demonstrated the possibility of using Direct Laser Deposition (DLD) for fabricating items from ceramic metal materials. We have determined promising fields of further research for the purpose of obtaining efficient metal matrix composites using additive manufacturing technologies.

Quality Management of Metal Products Prepared by High-Speed Direct Laser Deposition Technology

2016 ◽  
Vol 684 ◽  
pp. 461-467 ◽  
Author(s):  
Vladimir Glukhov ◽  
Gleb Turichin ◽  
Olga G. Klimova-Korsmik ◽  
Evgeniy Zemlyakov ◽  
Konstantin Babkin
Keyword(s):  
Heat Treatment ◽  
High Speed ◽  
Laser Deposition ◽  
Inconel 625 ◽  
Material Structure ◽  
Influence Of Process Parameters ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Metal Products ◽  
Deposition Technology

In this article the technology “high-speed direct laser deposition” is performed. Influence of process parameters on product properties and material structure was defined for Ni-based alloy Inconel 625. Developed technology provided the mechanic properties of products on the bottom level of rolled metal and allows avoid heat treatment and HIP in production process. Economic efficiency of this technology is demonstrated for main areas of industry.

scholarly journals Влияние высокотемпературного отжига на сопротивление высокоскоростному деформированию и разрушению тантала при температуре 20 и 500-=SUP=-o-=/SUP=-C

2019 ◽  
Vol 89 (5) ◽  
pp. 725
Author(s):  
Г.В. Гаркушин ◽  
А.С. Савиных ◽  
С.В. Разоренов ◽  
Г.И. Канель
Keyword(s):  
Strain Rate ◽  
Elastic Limit ◽  
Spall Strength ◽  
Laser Doppler Velocimeter ◽  
Spall Fracture ◽  
Hugoniot Elastic Limit ◽  
Critical Fracture ◽  
Strength Dependence ◽  
Wave Profiles ◽  
Critical Fracture Stress

AbstractTwo series of shock-wave experiments have been conducted in order to measure the Hugoniot elastic limit and determine the strain rate dependence of critical fracture stress for tantalum experiencing spall fracture. Tantalum specimens have been preannealed in vacuum at 1000°C. The evolution of elastoplastic compression shock waves at room and elevated up to 500°C temperatures has been presented from complete wave profiles recorded by a VISAR laser Doppler velocimeter. The spall strength dependence on the strain rate during the expansion of the material in a rarefaction wave has been determined.

scholarly journals Динамическая прочность керамических материалов на основе ZrO-=SUB=-2-=/SUB=-, изготовленных по аддитивной технологии

2019 ◽  
Vol 45 (19) ◽  
pp. 28
Author(s):  
В.В. Промахов ◽  
А.С. Савиных ◽  
Я.А. Дубкова ◽  
Н.А. Шульц ◽  
А.С. Жуков ◽  
...  
Keyword(s):  
Elastic Limit ◽  
Spall Strength ◽  
Composite Ceramic ◽  
Ceramic Materials ◽  
Experimental Investigations ◽  
Wave Loading ◽  
Hugoniot Elastic Limit ◽  
Full Wave ◽  
Ceramic Samples ◽  
Wave Profiles

The ceramic and composite ceramic materials based on ZrO2 have been prepared by the additive manufacturing. The experimental investigations on the shock-wave loading of the fabricated samples were carried out. The Hugoniot elastic limit and spall strength of the ceramic samples were determined by analyzing the full wave profiles recorded by means of the laser velocimeter under their shock compression.

Direct Laser Deposition Method of Multilayer Coating on High Manganese, Non-Magnetic Steel

2021 ◽  
Vol 1022 ◽  
pp. 97-104
Author(s):  
Dmitriy V. Masaylo ◽  
Sergei Igoshin ◽  
Alexey Orlov ◽  
Anatoly A. Popovich
Keyword(s):  
Multilayer Coating ◽  
Substrate Material ◽  
Laser Deposition ◽  
Inconel 625 ◽  
High Alloy ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Inconel 625 Alloy ◽  
Super Alloy ◽  
Cladding Material

Metal structures, pipelines and dies are used for a long time wear out and deteriorate. At the end of the service life it is necessary to repair or replace the metal component. The article discusses the method of applying nickel super-alloy Inconel 625 by direct laser deposition on high-alloy austenitic Mn-Cr steel. The article discusses the method of applying nickel super-alloy Inconel 625 by direct laser deposition on high-alloy austenitic Mn-Cr steel. Inconel 625 alloy is used as a buffer layer or repair material. But there is a high probability of cracks in the cladding material and the substrate material when the DLD method is used. One of the frequent causes of these cracks is high tensile stresses and oxides. To eliminate defects, the substrate was heated with resistive heaters to 400 °C. The result was a defect-free adhesion of the cladding material and the substrate. The hardness of the substrate before and after heating has not changed (312 HV 0,5/10). After heating the hardness of the substrate in the heat-affected zone decreased by 14% and was equal to 267 HV 0,5/10. The hardness of the cladding decreased by 12% and was equal to 230 HV 0,5/10.

scholarly journals Deposition of Nickel-Based Superalloy Claddings on Low Alloy Structural Steel by Direct Laser Deposition

Metals ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1326
Author(s):  
André Alves Ferreira ◽  
Rui Loureiro Amaral ◽  
Pedro Correia Romio ◽  
João Manuel Cruz ◽  
Ana Rosanete Reis ◽  
...  
Keyword(s):  
Structural Steel ◽  
Heat Affected Zone ◽  
Mechanical Response ◽  
Laser Deposition ◽  
Structural Defects ◽  
Inconel 625 ◽  
Direct Laser Deposition ◽  
Nickel Based Superalloy ◽  
Direct Laser ◽  
Cladding Layers

In this study, direct laser deposition (DLD) of nickel-based superalloy powders (Inconel 625) on structural steel (42CrMo4) was analysed. Cladding layers were produced by varying the main processing conditions: laser power, scanning speed, feed rate, and preheating. The processing window was established based on conditions that assured deposited layers without significant structural defects and a dilution between 15 and 30%. Scanning electron microscopy, energy dispersive spectroscopy, and electron backscatter diffraction were performed for microstructural characterisation. The Vickers hardness test was used to analyse the mechanical response of the optimised cladding layers. The results highlight the influence of preheating on the microstructure and mechanical responses, particularly in the heat-affected zone. Substrate preheating to 300 °C has a strong effect on the cladding/substrate interface region, affecting the microstructure and the hardness distribution. Preheating also reduced the formation of the deleterious Laves phase in the cladding and altered the martensite microstructure in the heat-affected zone, with a substantial decrease in hardness.

scholarly journals Inconel 625/AISI 413 Stainless Steel Functionally Graded Material Produced by Direct Laser Deposition

Materials ◽  
2021 ◽  
Vol 14 (19) ◽  
pp. 5595
Author(s):  
André Alves Ferreira ◽  
Omid Emadinia ◽  
João Manuel Cruz ◽  
Ana Rosanete Reis ◽  
Manuel Fernando Vieira
Keyword(s):  
Stainless Steel ◽  
Functionally Graded Material ◽  
Functionally Graded ◽  
Laser Deposition ◽  
Grain Structure ◽  
Smooth Transition ◽  
Inconel 625 ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Graded Material

Functionally graded material (FGM) based on Inconel 625 and AISI 431 stainless steel powders was produced by applying the direct laser deposition (DLD) process. The FGM starts with layers of Inconel 625 and ends with layers of 431 stainless steel having three intermediate zones with the composition (100-X)% Inconel 625-X% 431 stainless steel, X = 25, 50, and 75, in that order. This FGM was deposited on a 42CrMo4 steel substrate, with and without preheating. Microstructures of these FGMs were evaluated, while considering the distribution of chemical composition and grain structure. Microstructures mainly consisted of columnar grains independent of preheating condition; epitaxial growth was observed. The application of a non-preheated substrate caused the formation of planar grains in the vicinity of the substrate. In addition, hardness maps were produced. The hardness distribution across these FGMs confirmed a smooth transition between deposited layers; however, the heat-affected zone was greatly influenced by the preheating condition. This study suggests that an optimum Inconel 625/AISI 431 FGM obtained by DLD should not exceed 50% AISI 431 stainless steel.

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