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Superplasticity of multi-directional impact forged Mg–Gd–Y-Zr alloy
Journal of Alloys and Compounds, 2016Abstract A novel multi-directional impact forging (MDIF) process was successfully applied to a Mg–Gd–Y-Zr alloy and the superplasticity of the MDIFed alloy was investigated. It was shown that the initial microstructure after MDIF had a unique characteristic of coarse grains decorated by profuse tension twins. Tensile tests at various temperatures and
J.L. Li, D. Wu, Q.B. Yang, R.S. Chen
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Superplasticity of fine-grained Mg–xGd alloys processed by multi-directional forging
Materials Science and Engineering: A, 2019Abstract Microstructural development and superplastic behavior of Mg–xGd (x = 1, 2, 3 wt%) alloys were investigated after the multi-directional forging (MDF) process. Microstructural observations of the extruded materials revealed non-homogeneous structures with bimodal grain sizes, consisting of coarse elongated grains resulting from deformation ...
N. Azizi, R. Mahmudi
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Materials Science and Engineering: A, 2008
Abstract Annealing processes in copper, processed by multi-directional forging to strains of ɛ = 0.4–6.0 at 300 K, were studied at 503–573 K. Strain-induced ultrafine-grained copper shows mainly grain coarsening behaviour, which is categorized in three stages, i.e.
A. Takayama, X. Yang, H. Miura, T. Sakai
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Abstract Annealing processes in copper, processed by multi-directional forging to strains of ɛ = 0.4–6.0 at 300 K, were studied at 503–573 K. Strain-induced ultrafine-grained copper shows mainly grain coarsening behaviour, which is categorized in three stages, i.e.
A. Takayama, X. Yang, H. Miura, T. Sakai
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Formation and Microstructure of Ultrafine-Grained Titanium Processed by Multi-Directional Forging
Journal of Materials Engineering and Performance, 2016Ultrafine-grained titanium with uniform grain size for medical applications is obtained by multi-directional forging at 773 K in air. The microstructures and microtextures in the deformed titanium specimens are investigated by optical microscopy, electron backscattered diffraction technique, and transmission electron microscopy.
Bingfeng Wang, Xiaoyan Wang, Juan Li
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Materials Science Forum, 2016
The effects of final forging temperatures on deformability and structure evolution of high purity aluminum during multi-directional forging process were investigated. The results showed that increasing the initial forging temperature is beneficial for controlling the sample shape in the initial forging passes.
Qing Feng Zhu +5 more
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The effects of final forging temperatures on deformability and structure evolution of high purity aluminum during multi-directional forging process were investigated. The results showed that increasing the initial forging temperature is beneficial for controlling the sample shape in the initial forging passes.
Qing Feng Zhu +5 more
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Static recrystallization behavior of multi-directional impact forged Mg-Gd-Y-Zr alloy
Journal of Alloys and Compounds, 2019Abstract The static recrystallization behavior of a (Mg-9.02Gd-4.21Y-0.48Zr wt.%) GW94 alloy during annealing treatment in the temperature range of 350–500 °C has been investigated by means of electron backscattered diffraction (EBSD). To investigate the role of twin boundaries in static recrystallization of GW94 alloy, a large number of {10–12 ...
S.S.A. Shah, D. Wu, R.S. Chen, G.S. Song
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Recrystallization Behavior of Nano Grained Cu-Zn Alloy Produced by Multi-Directional Forging
Materials Science Forum, 2007The static recrystallization (SRX) behavior of nano grained (NGed) Cu-30mass%Zn alloy processed by Multi-directional forging (MDF) was investigated. The NGed Cu-Zn alloy showed characteristic annealing behavior. The SRX nucleation and its grain growth occurred more readily in the samples deformed to higher cumulative strain at lower temperature.
Y. Nakao, Hiromi Miura, Taku Sakai
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An approach for room-temperature multi-directional forging of pure titanium for strengthening
Materials Science and Engineering: A, 2018Abstract Commercially pure Ti grade 2 was multi-directionally forged (MDFed) at room temperature. MDFing could be successfully carried out without any cracking to a cumulative strain of ΣΔe = 2.0. Ultrafine-grained (UFGed) structure gradually developed with increasing cumulative strain mainly by mechanical twinning and kinking.
H. Miura +4 more
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Analysis of Multi-Directional Squeeze Casting Liquid Forging of Sewing Machine Oil Chassis
Applied Mechanics and Materials, 2013Sewing machine oil chassis is manufactured by adopting the method of multi-directional squeeze casting liquid forging. When multi-directional pressure is applied on the template, forward and radial pressures inside the solidified body are the same at each direction according to calculation and analysis.
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Grain Refinement Process in Metals and Alloys during Multi-Directional Forging
Journal of the Japan Society for Technology of Plasticity, 2009Taku SAKAI, Hiromi MIURA
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