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 High-Speed Direct Laser Deposition: Technology, Equipment and Materials

2016 ◽  
Vol 125 ◽  
pp. 012009 ◽  
Author(s):  
G A Turichin ◽  
V V Somonov ◽  
K D Babkin ◽  
E V Zemlyakov ◽  
O G Klimova
Keyword(s):  
High Speed ◽  
Laser Deposition ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Deposition Technology

Research of Effect of the Powder Material Quality in the Structure Formation of the DLD Inconel 718 Samples

2019 ◽  
Vol 822 ◽  
pp. 404-409
Author(s):  
S.S. Silchonok ◽  
G.G. Zadykyan ◽  
Oleg G. Zotov ◽  
Iuliia N. Morozova
Keyword(s):  
Chemical Composition ◽  
Nickel Alloy ◽  
Structure Formation ◽  
Powder Material ◽  
Inconel 718 ◽  
High Speed ◽  
Laser Deposition ◽  
Structure And Properties ◽  
Direct Laser ◽  
Deposition Technology

This article is devoted to Inconel 718 heat-resistant nickel alloy. Comparison of samples obtained by high-speed direct laser deposition technology of powders from different manufacturers on their structure and properties was carried out. The dependence of the influence of the chemical composition of the powders on the formation of defects in the studied samples was established

scholarly journals Peculiarities of obtaining high-quality products of titanium alloys manufactured by direct laser deposition technology Особенности получения качественных изделий из титановых сплавов, изготовленных технологией прямого лазерного выращивания

2019 ◽  
Vol 13 (8) ◽  
pp. 722-733
Author(s):  
M.O. Gushchina ◽  
O.G. Klimova-Korsmik ◽  
S.A. Shalnova ◽  
A.M. Vildanov ◽  
E.A. Valdaytseva
Keyword(s):  
Processing Parameters ◽  
Laser Deposition ◽  
Powder Materials ◽  
Additive Technology ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
The Right ◽  
Complex Parts ◽  
Unique Individual ◽  
Deposition Technology

The additive technology of direct laser deposition (DLD) belongs to the class of 3D printing methods for metal parts and constructions. It is promising for the manufacture of large-sized complex parts for the aviation and shipbuilding industries. Methods of additive production dictate serious requirements for the properties of building powders, but with the right choice of system and taking into account all the processes that occur when a selected source acts on powder materials, unique individual material properties can be achieved. In this work, the influence of powder quality, protect atmosphere as well as processing parameters on the structure and properties of deposited parts manufactured Ti-6Al-4V investigated. Аддитивная технология прямого лазерного выращивания (ПЛВ) относится к классу методов 3D печати металлических изделий. Она является перспективной для изготовления крупногабаритных сложнопрофильных изделий авиационной и судостроительной промышленностей. Методы аддитивного производства диктуют серьезные требования к свойствам используемых порошков, но при правильном выборе системы и с учетом всех процессов, протекающих при воздействии выбранного источника на порошковые материалы можно добиться уникальных индивидуальных свойств материала. В данной работе представлены результаты исследований влияния качества порошков, качества атмосферы и технологических режимов процесса на структуру и свойства конечных изделий, изготовленных методом прямого лазерного выращивания из титанового сплава ВТ6. Кроме того, показана принципиальная возможность повторного использования титановых порошков для достижение более высоких экономических показателей процесса.

scholarly journals Adverse effects of post-heat treatment on the interfacial bonding strength of direct laser deposition Inconel 625/1045 composites

RSC Advances ◽  
2019 ◽  
Vol 9 (18) ◽  
pp. 10064-10071
Author(s):  
Chen Zhou ◽  
Ding Jin ◽  
Qiaoxin Zhang ◽  
Jingui Yu
Keyword(s):  
Heat Treatment ◽  
Adverse Effects ◽  
Bonding Strength ◽  
Interfacial Bonding ◽  
Laser Deposition ◽  
Inconel 625 ◽  
Metallographic Analysis ◽  
Post Heat Treatment ◽  
Interfacial Bonding Strength ◽  
Direct Laser

Adverse effects of post-heat treatment on interfacial bonding strength of DLD composites probed by fractography and metallographic analysis.

Effect of Heat Treatment on Structure and Properties of Martensite Stainless Steel for Ice-Class Ships Obtained by Direct Laser Deposition Method

2021 ◽  
Vol 1016 ◽  
pp. 725-731
Author(s):  
Olga Gennadyevna Klimova-Korsmik ◽  
R.V. Mendagaliyev ◽  
I.A. Tsibulskiy ◽  
O.G. Zotov ◽  
R.S. Korsmik ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Steel Powder ◽  
Metal Structure ◽  
Laser Deposition ◽  
The Arctic ◽  
Initial State ◽  
Cast Material ◽  
Direct Laser Deposition ◽  
Direct Laser ◽  
Arctic Conditions

At present, to increase competitiveness of shipyards for manufacturing of shipbuilding parts new high technologies are used. Additive production methods, including direct laser deposition (DLD) technology, which meets all the requirements of competitiveness, are increasingly being applied. Heavy-duty large-size parts such as propellers, blades, hubs and other critical parts used in shipbuilding have become possible to produce with DLD. In the process of DLD it is possible to produce parts, including shipbuilding steels used in the Arctic conditions, with the required mechanical characteristics not inferior to similar brands of materials obtained by casting or plastic deformation methods. The work is devoted to research of thermal process influence on structure and mechanical properties formation of deposited samples from steel powder 06Cr15Ni4CuMo. Features of formation of microstructure components by means of optical microscopy, X-ray structure analysis (XRD) are investigated, and also CCT diagram is constructed. Tensile and impact toughness tests have been conducted. As a result, it was found that the material obtained by the DLD method in its initial state significantly exceeds the strength characteristics of heat-treated castings of similar chemical composition, but is inferior to it in terms of plasticity and viscosity. The increase of viscosity and plasticity up to the level of cast material in the grown samples is achieved during the subsequent heat treatment, which leads to the formation of the structure of tempered martensite and reduction of its content in the two-stage tempering in the metal structure. The strength of the material is also reduced to cast metal after heat treatment.

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 Structure and properties of near-a titanium products obtained by direct laser deposition and heat treatment

2021 ◽  
Vol 2077 (1) ◽  
pp. 012018
Author(s):  
S A Shalnova ◽  
O G Klimova-Korsmik ◽  
A V Arkhipov ◽  
F A Yunusov
Keyword(s):  
Heat Treatment ◽  
Titanium Alloys ◽  
Laser Deposition ◽  
Metallographic Analysis ◽  
Phase Transformation Temperature ◽  
Direct Laser Deposition ◽  
Temperature Range ◽  
Direct Laser ◽  
Temperature Ranges ◽  
Significant Achievement

Abstract Advanced techniques of obtaining products require careful selection of materials for various industries. Titanium alloys are widely used in the aerospace, shipbuilding and mechanical engineering industries. The development of near-a titanium alloys should be considered a significant achievement in the field of metallurgy and heat treatment (HT) of titanium alloys. This article presents a study carried out with the aim of optimizing heat treatment modes for high-temperature titanium alloys obtained by direct laser deposition (DLD). Heat treatment was carried out in the temperature range (700-1000°C), covering three typical temperature ranges, i.e. the temperature range for the partial decomposition of martensite, the temperature range for the complete decomposition of martensite, and the phase transformation temperature were subsequently selected as the heat treatment temperatures. Based on metallographic analysis, the influence of heat treatment modes on the structure, as well as the tensile properties at room temperature, of TA15 titanium DLD-samples.

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