Ignition delays due to the formation of hotspots ranged from 1.2 to 6.5 msand were observed to be in the same range for all milling times considered less than t cr. ^ Combustion velocities ranged from 25-31 cm/s for impacted samples at an impact energy of 200-250 J. Combustion experiments on MA Ni/Al pressed into cylindrical pellets shows that Comparative Study on Microstructural Stability of Pre Oct 24, 2018 · Microstructural stability is an important issue for nanocrystalline materials to be practically used in many fields. The present work shows how microstructure evolves with rolling strain in pre-annealed electrodeposited nanocrystalline nickel containing an initial strong fiber texture, on the basis of X-ray diffraction line profile analysis as well as transmission electron microscopy observation.
iron, nickel, manganese, and silicon are also sometimes added to aluminium bronzes . Aluminium bronzes are used for their combination of high strength, excellent corrosion and wear resistance. Aluminium bronze alloys typically contain 9-12% of aluminium and up to 6% of iron and nickel. Effect of hot forging on the microstructure and Dec 11, 2019 · The work is devoted to the study of the microstructure and superplastic properties of the nickel base powder superalloy EP741NP subjected to different hot forging procedures, which were performed after preliminary heterogenization treatment of the initial HIP-ed material. Condition 1 of the superalloy was obtained through three-stage uniaxial canned forging with intermediate recrystallization MICROSTRUCTURE OF BRAZED JOINTS OF NICKEL formation of brazed joints, produced by high-temperature vacuum brazing and BFA on base of NiCrZr and NiCoCrWMoAlNbB systems. 7 Ref., 3 Tables, 15 Figures. Keywords:intermetallic alloys, nickel aluminides, vacuum brazing, brazing filler alloy, brazed seam, spreading tests, microstructure, X-ray spectral microana-lysis
Research of the deformation behavior and the microstructure evolution of nickel-based superalloys were carried out on small specimens. The accumulated strains and the stress distribution in specimens were determined during simulation. It is possible to predict structure formation on Microstructure and Mechanical Properties of Ti Cold-Spray Mar 05, 2015 · Microstructure and Mechanical Properties of Feedstock Powder. In Figure 1a, ECCI images of feedstock Ti powder particles show that the Ti powder had an acicular microstructure with lamellae ranging between 200 nm and 3 m in width and between 1 and 20 m in length. The formation of lamella was expected due to surface tension during powder production by the plasma atomization Microstructure evolution dependence of work-hardening Jan 07, 2021 · 1. Introduction. Nickel-based superalloys are used normally in high temperature, high corrosion, and other harsh environments [1,2].In accordance with the different deformation temperatures, the formation process for nickel-based superalloys can be divided into two types:hot deformation and cold deformation .Superalloys always present good plasticity and do not easily crack during hot
May 23, 2012 · Control of the microstructure formation in the near-net-shape laser additive tip-remanufacturing process of single-crystal superalloy Neural network model for correlating microstructural features and hardness properties of nickel-based superalloys. Journal of Materials Research and Technology, Vol. 9, No. 6 Correlation of Microstructure Review Annealing of Cold-worked Austenitic Stainless lead to the formation of more martensite31,32) or even to re-version to austenite of the martensite formed during cool-ing or after deformation.3336) Depending on the degree of cold working and annealing temperature, there may be also excessive grain 1 MicrostructureandPropertiesofEngineeringMaterials1.2 Microstructure 9 features.Forexample,nickel-basedsuperalloys,somealuminumalloys,andiron-based tool steels possess a conventional matrix with regard to grain size. The matrix, Plastic deformation during cold working. 1.3 Microstructure and Properties 11 Precipitation Solid solution Fine