Results 1 to 10 of about 35,767 (354)
Effect of TiO2 on Grain Refining of Amorphous Si3N4 and the Grain-refined Mechanism.
Journal of the Japan Society of Powder and Powder Metallurgy, 1997 Amorphous Si3N4/TiO2 compacted bodies were heated at 1490°C, for 1 to 10 hr under N2 pressures of 0.92 and 1000 atm, and the effect of N2 pressure on the resulting grain refining was investigated, to clarify the role of TiO2 in the grain-refined mechanism.
Kawai, Chihiro +4 more
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Relationship between casting modulus and grain size in cast A356 aluminium alloys [PDF]
, 2012 Microstructure of Al-Si alloy castings depends most generally on melt preparation and on the cooling rate imposed by the thermal modulus of the component. In the case of Al-Si alloys, emphasis is put during melt preparation on refinement of pro-eutectic (
Abaunza, Unai +3 more
core +1 more source
Metals, 2017 Based on electron backscattered diffraction analysis and transmission electron microscopy observation, the mechanism of inhomogeneous grain refinement in a NiTiFe shape memory alloy (SMA) subjected to single-pass equal-channel angular extrusion (ECAE ...
Yanqiu Zhang, Shuyong Jiang
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Grain refinement of primary silicon in hypereutectic Al-Si alloys by different P-containing compounds [PDF]
China Foundry, 2021 The grain refinement behavior of Si-3P, Si-25Mn-10P, and Al-10Si-2Fe-3P master alloys on hypereutectic Al-24Si alloy was studied. Microstructure analysis indicates that the P-containing compounds in the three master alloys are SiP, MnP, and AlP ...
Benson Kihono Njuguna +2 more
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Results in Physics, 2019 The excellent grain refinement effectiveness and good electrical conductivity is difficult to be simultaneously obtained due to the influence of both the grain boundary and excessive Ti in the usually used refiners, such as Al-5Ti-1B master alloy.
Xuexia Xu +9 more
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Grain refinement of superalloys K3 and K4169 by the addition of refiners [PDF]
Science and Technology of Advanced Materials, 2001 Grain refinement of superalloys K3 and K4169 is achieved by adding refiners A, B, or mixed refiner (A+B) into the melt of alloy K3, and refiner C into the melt of alloy K4169 under different casting parameters. Results indicate that the mixed refiner (A+B) produces the best refining effect for alloy K3.
Yuhua Xiong +4 more
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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
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EBSD study on magnetic field altering crystal texture and grain growth during laser-hybrid welding
Materials & Design, 2022 In this study, evolutions of austenite and ferrite microstructures and relevant variations of performances were analyzed during laser-arc welding 316L austenitic stainless steel with a magnetic field. For austenite grains, the magnetic field gave rise to
Chang Hu +5 more
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Thermomechanical Grain Refinement in AA6082-T6 Thin Plates under Bobbin Friction Stir Welding
Metals, 2018 Bobbin friction stir welding (BFSW), with its fully penetrated pin and double-sided shoulder, can provide high rates of heat generation. This produces solid-state thermo-mechanical grain refinement.
Abbas Tamadon +3 more
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Study on the grain refinement mechanism of the machined surface of Inconel 718
Journal of Materials Research and TechnologyIn machining processes, the high temperature and stress can lead to plastic deformations of the workpiece material. Thermomechanical loading has a significant impact on the microstructure of the machined surface, including grain deformation ...
Yu Qi +6 more
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