Results 41 to 50 of about 1,416,045 (315)
Effects of grain refinement on cast structure and tensile properties of superalloy K4169 at high pouring temperature [PDF]
China Foundry, 2016 In order to improve the filling ability of large complex thin wall castings, the pouring temperature should be increased, but this will result in the grain coarsening. To overcome this problem, two kinds of grain refiners of Co-Fe-Nb and Cr-Fe-Nb ternary
Zi-qi Jie, Jun Zhang, Tai-wen Huang
doaj +1 more source
Contrastive Bootstrapping for Label Refinement [PDF]
arXiv, 2023 Traditional text classification typically categorizes texts into pre-defined coarse-grained classes, from which the produced models cannot handle the real-world scenario where finer categories emerge periodically for accurate services. In this work, we investigate the setting where fine-grained classification is done only using the annotation of coarse-
arxiv
Metallurgical and Materials Transactions. A, 2020 Surface deformation, applied in-process by machine hammer peening (MHP), has the potential to refine the coarse columnar β -grain structures normally found in high deposition rate Wire-Arc Additive Manufacturing (WAAM) processes with Ti alloys like Ti ...
J. Hönnige +6 more
semanticscholar +1 more source
Grain refinement of AZ91D alloy by intensive melt shearing and its persistence after remelting and isothermal holding [PDF]
China Foundry, 2013 Intensive melt shearing has a significant grain refining effect on some light alloys. However, the persistence of the grain refining effect during isothermal holding and remelting is still unclear, although it is very important for the practical ...
Zuo Yubo, Fan Zhongyun, Cui Jianzhong
doaj
Frontiers in Bioengineering and Biotechnology, 2021 Magnesium (Mg) and its alloys have attached more and more attention because of their potential as a new type of biodegradable metal materials. In this work, AZ31/ZrO2 nanocomposites with good uniformity were prepared successfully by friction stir ...
Ke Qiao +10 more
doaj +1 more source
Designing grain refinement passes for multi-direction forging: A phase-field crystal study
Journal of Materials Research and Technology, 2023 Multi-directional forging is an effective plastic deformation method for polycrystalline grain refinement, and the degree of refinement is closely related to the number of forging passes. However, the relationship between the degree of refinement and the
Zhuo Song +5 more
doaj
Taguchi Approach for Optimization of Parameters that Effect Grain Size of Cast A357 Alloy
Archives of Foundry Engineering, 2017 Grain refining and modification are common foundry practice for improving properties of cast Al-Si alloys. In general, these types of treatments provide better fluidity, decreased porosity, higher yield strength and ductility. However, in practice, there
Çolak M., Dışpınar D.
doaj +1 more source
Arthritis Care &Research, EarlyView.Objective Patients with knee osteoarthritis rely on symptomatic treatments, in which up to 75% of the pain reduction can be attributed to the placebo effect. This effect may vary based on treatment type (eg, biologics vs nonbiologic injection) and route of administration (eg, intra‐articular vs topical vs oral).
Johanna M. Borst +5 more
wiley +1 more source
Materials Research Express, 2020 The biodegradability and mechanical properties of magnesium make it suitable for temporary implant applications. However, its degradation rate in the physiological environment needs to be controlled. The effect of grain refinement on the degradation rate
R Shishir, Shebeer A Rahim, T Hanas
doaj +1 more source
Competition for Nucleation and Grain Initiation during Solidification
Metals, 2022 Without the addition of any grain refiner, the inclusion particles in a melt will induce heterogeneous nucleation and grain initiation during the solidification of metallic materials.
Feng Gao, Zhongyun Fan
doaj +1 more source