Results 181 to 190 of about 4,093 (217)

Research on Neural Network Prediction of Multidirectional Forging Microstructure Evolution of GH4169 Superalloy

Journal of Materials Engineering and Performance, 2021
Based on the hot compression experiment of GH4169 superalloy, the constitutive equation and the microstructure evolution model of GH4169 superalloy were established, and they were introduced into the Deform® simulation software to realize the simulation of the microstructure evolution of GH4169 superalloy in closed multidirectional forging, single ...
Junting Luo
exaly   +2 more sources

Multidirectional forging of AZ91 magnesium alloy and its effects on microstructures and mechanical properties

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2015
Abstract AZ91 alloy was subjected to multidirectional forging (MDF) and the relationship between microstructures and mechanical properties generated by MDF were investigated. The results showed that after 1 MDF pass grain size of the alloy decreased compared with as-cast alloy, and the amount of recrystallization grains increased when the MDF ...
Kaibo Nie, K K Deng, X J Wang
exaly   +2 more sources

Effect of multidirectional forging on microstructures and tensile properties of a particulate reinforced magnesium matrix composite

Materials Science & Engineering A: Structural Materials: Properties, Microstructure and Processing, 2011
Abstract A particulate reinforced magnesium matrix composite prepared with stir casting was subjected to multidirectional forging (MDF). The results showed that after 1 MDF pass the grain size of matrix in the composites decreased compared with as-cast composite, and increased with increasing the MDF temperature from 370 °C to 450 °C. With increasing
Kaibo Nie, X J Wang, X S Hu
exaly   +2 more sources

Effect of Multidirectional Forging on the Microstructure and Mechanical Properties of the Al–Mg–Mn–Cr Alloy

Physics of Metals and Metallography, 2020
The effect of multidirectional forging on the grain structure and parameters of secondary-phase particles in the Al–4.8Mg–1.2Mn–0.1Cr alloy has been investigated using the methods of the scanning and transmission electron microscopy. The multidirectional forging performed at a temperature of 350°C to a cumulative strain of 10.5 has resulted in a 1.5 ...
A A Kishchik, A D Kotov, A V Mikhaylovskaya   +2 more
exaly   +2 more sources

Microstructures and mechanical properties of SiCp/AZ91 magnesium matrix nanocomposites processed by multidirectional forging

Journal of Alloys and Compounds, 2015
Abstract A particulate reinforced magnesium matrix nanocomposite was subjected to multidirectional forging (MDF). The results showed that the microstructure of the nanocomposite mainly consisted of some large initial grains and fine recrystallized grains along initial grain boundaries after 1 MDF pass.
Kaibo Nie, K K Deng, X J Wang
exaly   +2 more sources

Effect of Warm Multidirectional Forging on the Microstructure and Mechanical Properties of a High-Nitrogen Austenitic Steel

Russian Physics Journal, 2023
The features of the microstructure of the high-nitrogen austenitic VNS-53-Sh steel after multidirectional isothermal forging have been studied by transmission electron microscopy. The formation of an inhomogeneous deformed microstructure is shown. Regions of significant fragmentation are observed, in which the grain-subgrain structure is refined. Areas
Kim, Anna V., Akkuzin, Sergey A., Litovchenko, Igor Yu., Polekhina, Nadezhda A., Kushnereva, D. S.   +4 more
openaire   +2 more sources

Investigation of the required clamping force at multidirectional undercut-forging

Production Engineering, 2018
A hot forging process allows to produce parts of excellent quality and technical properties. Nevertheless, it is not possible to forge undercut geometries like piston pin bores, it is usually necessary to manufacture them in subsequent processes. Thus, an undercut-forging process was newly developed.
Jonathan Ross, Jan Langner, Malte Stonis, Bernd-Arno Behrens   +3 more
openaire   +1 more source

Superplastic properties in a Ti5Al3Mo1.5 V titan alloy processed by multidirectional forging process

Materials Letters, 2022
Abstract In this study, ultrafine grains in microstructures of Ti5Al3Mo1.5 V titan alloy was achieved by the multidirectional forging (MDF) process. The essence of the MDF is pressing steps combined with rotations of the workpiece in all directions within a forging cycle. The MDF process was performed for one to three cycles at temperatures from 850 °
Manh Tien Nguyen, Van Thao Le, Manh Hung Le, Truong An Nguyen   +3 more
openaire   +1 more source

Condition of Carbides in High-Speed Steels after Multidirectional Forging

Defect and Diffusion Forum, 2019
Although heat treatment of high-speed steels has been covered in numerous treatises, their microstructure before treatment still receives insufficient attention. This article therefore explores the relationship between the initial microstructure and resultant properties in heat treated steels for cutting tools and sonotrodes (special tools for ...
Antonín Kříž, Vojtěch Průcha
openaire   +1 more source

Grain Refinement in a Low Carbon Steel Through Multidirectional Forging

Journal of Iron and Steel Research International, 2012
Grain refinement is one of the successful and low-cost methods to develop metals having excellent combination of strength and ductility. Low carbon steel was deformed by using multidirectional forging (MDF) technique at room temperature. The influence of strain amount and annealing process on the microstructure and mechanical properties of investigated
V. Soleymani, B. Eghbali
openaire   +1 more source