Results 161 to 170 of about 734 (192)
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Production Engineering, 2012
In automotive industry, parts made of aluminum alloys are used with increasing frequency. During forging operations for the production of aluminum long flat pieces, defects like folds can appear. Especially internal folds are of interest, which are only evident in the fiber orientation and have a negative effect on the dynamic mechanical properties of ...
Bernd-Arno Behrens +2 more
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In automotive industry, parts made of aluminum alloys are used with increasing frequency. During forging operations for the production of aluminum long flat pieces, defects like folds can appear. Especially internal folds are of interest, which are only evident in the fiber orientation and have a negative effect on the dynamic mechanical properties of ...
Bernd-Arno Behrens +2 more
openaire +1 more source
High Strength and Ductility in Multi-Directional Forged Wrought Aluminum Alloys
Advanced Materials Research, 2014A wrought aluminum alloy 3004 was processed by multi-directional forging (MF), natural aging and artificial aging. The samples possess high strength and high ductility after processing. Grain size in samples was reduced evidently. The strength of samples was enhanced by dispersing ultrafine precipitate particles within the grains, reducing grain-size ...
Li Fei Pan, Lin Chen, Wei Lin Yan
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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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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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Superplasticity of fine-grained Mg–xGd alloys processed by multi-directional forging
Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 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 ...
Najmedin Azizi, Reza Mahmudi
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Improved Mechanical Properties of AZ31 Alloy Fabricated by Multi-Directional Forging
Key Engineering Materials, 2017In this work, the tensile properties of AZ31 Mg alloy deformed by multi-directional forging (MDF) were investigated at room temperature. And the enhanced mechanical properties of yield strength of 93 MPa, ultimate tensile strength (UTS) of 253 MPa and elongation of 29% were achieved.
Cai Chen +3 more
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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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Experimental study and finite element analysis on the frame of multi-directional forging press
Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture, 2016With the development of multi-directional forging technology, heavy multi-directional forging press has been widely used in manufacturing industry. However, there is a contradiction between the independence of structure and the independence of mechanics, which becomes a bottleneck and limits the development of heavy multi-directional forging press ...
Wenjie Wang +3 more
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Mechanical Properties of Multi-Directional Forged Al-7Si-4Zn-3Cu Alloy
Defect and Diffusion Forum, 2018In this study, Al-7Si-4Zn-3Cu alloy was processed by multi-directional forging (MDF) at 3, 6 and pass corresponding one, two and three cycle, respectively. The structural and mechanical properties of the alloys were investigated at as-cast, homogenised and MDF states.
Yasin Alemdağ +3 more
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International Journal of Material Forming, 2016
In each industrial process for the production of crankshafts a low energy demand and a fast processing time are required. Crankshafts have a very complex geometry and are forged with a high percentage of flash compared to other forging parts. Recent research showed the feasibility of a flashless forging of crankshafts.
Bernd-Arno Behrens +2 more
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In each industrial process for the production of crankshafts a low energy demand and a fast processing time are required. Crankshafts have a very complex geometry and are forged with a high percentage of flash compared to other forging parts. Recent research showed the feasibility of a flashless forging of crankshafts.
Bernd-Arno Behrens +2 more
openaire +1 more source