Effect of thermal cycling on microstructure and mechanical properties of 2A97 Al–Li alloy fabricated by direct laser deposition

Vacuum ◽  
2021 ◽  
pp. 110299
Author(s):  
Rui Chen ◽  
Huaming Wang ◽  
Bei He ◽  
Yuxuan Tu ◽  
Haibo Tang
Keyword(s):  
Mechanical Properties ◽  
Thermal Cycling ◽  
Laser Deposition ◽  
Direct Laser Deposition ◽  
Microstructure And Mechanical Properties ◽  
Direct Laser

Direct laser deposition of Cu alloy on forming tool surfaces—Process window and mechanical properties

CIRP Annals ◽  
2010 ◽  
Vol 59 (1) ◽  
pp. 211-214 ◽  
Author(s):  
M. Schmidt ◽  
R. Kolleck ◽  
A. Grimm ◽  
R. Veit ◽  
K. Bartkowiak
Keyword(s):  
Mechanical Properties ◽  
Laser Deposition ◽  
Process Window ◽  
Direct Laser Deposition ◽  
Cu Alloy ◽  
Direct Laser

scholarly journals Influence of the Feed Powder Composition in Mechanical Properties of AlN-Nano-Reinforced Aluminium Composites Coatings Deposited by Reactive Direct Laser Deposition

Metals ◽  
2020 ◽  
Vol 10 (7) ◽  
pp. 926
Author(s):  
Ainhoa Riquelme ◽  
Pilar Rodrigo ◽  
María Dolores Escalera-Rodriguez ◽  
Pablo García-Fogeda ◽  
Joaquín Rams
Keyword(s):  
Mechanical Properties ◽  
Crystalline Structure ◽  
Composite Coatings ◽  
Laser Deposition ◽  
Aluminium Matrix ◽  
Pure Aluminium ◽  
Direct Laser Deposition ◽  
Powder Composition ◽  
Direct Laser ◽  
Nitridation Reaction

Aluminium matrix composite coatings reinforced with AlN nanopaticles have been manufactured by direct laser deposition on an AA6082 alloy substrate. The reinforcement of the composite has been generated by the direct nitridation reaction of the feed powder with the carrier gas (N2) heated by an HPDL beam during the fabrication of the coating. The coating obtained consists of nano-sized AlN particles in an aluminium matrix, and the crystalline structure of the obtained AlN depends on the characteristics of the powder used. In this work, the influence of the feed powder composition is studied by comparison among pure aluminium, Al12-Si alloy, and AA6061 alloy, on the formation of AlN and its crystalline structure. A correlation was established between the temperature distribution reached by the particles, their composition, and the nitridation reaction mechanisms. The effect of the reinforcement was evaluated by comparing the microstructure and mechanical properties (microhardness, nanoindentation) of the composite costing with non-reinforced Al coatings and uncoated AA6082. Al/AlN composite coatings with improved properties were achieved, reaching hardness values that were 65% higher than coatings without reinforcement.

scholarly journals Effect of thermal cycles on the microstructure and mechanical properties of cold-resistant steel 09CrNi2MoCu during laser deposition

2021 ◽  
Vol 2077 (1) ◽  
pp. 012012
Author(s):  
R Mendagaliyev ◽  
O G Klimova-Korsmik ◽  
S Y Ivanov ◽  
K D Babkin ◽  
A M Vildanov
Keyword(s):  
Mechanical Properties ◽  
Three Dimensional ◽  
Calculated Data ◽  
Laser Deposition ◽  
Thermal Cycles ◽  
Initial State ◽  
Microstructure And Mechanical Properties ◽  
Heat Treated ◽  
Direct Laser ◽  
Static Tensile

Abstract The formation of microstructure features of cold-resistant bainite-martensite steel 09CrNi2MoCu has been investigated. Thermal cycles during direct laser deposition were studied. The thermal cycles at different points of the deposited samples were investigated. The thermal cycles and CCT diagrams on microstructure formation and mechanical properties have been analyzed. The numerical calculation of the three-dimensional thermal conductivity problem by the finite element method is carried out. The received data of experimentally measured thermal cycles and the calculated data have shown good coincidence of temperature values. On the basis of the obtained data the calculated dependence of inter-layer temperature at depositing the sample with and without a pause is given. The microstructure and mechanical properties of the samples in the initial state and after heat treatment have been studied and compared with traditional hot rolling. The microstructure features at different pauses between passes in different parts of the obtained samples were revealed. The effect on static tensile and impact toughness at -40°C in the bred and heat-treated state was investigated.

Research of Mechanical Properties of Cold Resistant Steel 09CrNi2MoCu after Direct Laser Deposition

2019 ◽  
Vol 822 ◽  
pp. 418-424 ◽  
Author(s):  
Y.A. Bistrova ◽  
E.A. Shirokina ◽  
R.V. Mendagaliev ◽  
M.O. Gushchina ◽  
A. Unt
Keyword(s):  
Mechanical Properties ◽  
Mechanical Characteristics ◽  
Fractional Composition ◽  
Mechanical Tests ◽  
Impact Testing ◽  
Laser Deposition ◽  
Resistant Steel ◽  
Direct Laser Deposition ◽  
Steel Material ◽  
Direct Laser

Review focuses on describing of mechanical properties of the components manufactured via direct laser depositionfrom cold resistant steel material. The results of tensile and impact testing are presented and microstructures of the fractures are shown. The process of laser deposition of cold-resistant steels, the formation of structures, as well as the mechanical properties of these samples are poorly understood. The results of tensile and impact tests are presented, and microstructures are shown. Mechanical tests for impact strength were carried out at a temperature of -40˚С, with different laser radiation powers. The results are given using the as-received powder, as well as used powder with a different mixing ratio, and the results are analyzed. As a result of the study, it was found that the fractional composition of the 09XH2MD alloy powder affects the mechanical characteristics of samples obtained by direct laser deposition. The effect of recycled powder on the mechanical properties of the obtained samples is given, the optimal laser deposition regimes are selected

Sign in / Sign up

Export Citation Format

Share Document