Relevant bibliographies by topics / Forging process of magnesium alloy

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'Forging process of magnesium alloy'

Author: Grafiati
Published: 4 June 2021
Last updated: 1 February 2022

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the lists of relevant articles, books, theses, conference reports, and other scholarly sources on the topic 'Forging process of magnesium alloy.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Journal articles on the topic "Forging process of magnesium alloy"

1

Gontarz, Andrzej, Krzysztof Drozdowski, Anna Dziubinska, and Grzegorz Winiarski. "A study of a new screw press forging process for producing aircraft drop forgings made of magnesium alloy AZ61A." Aircraft Engineering and Aerospace Technology 90, no. 3 (April 9, 2018): 559–65. http://dx.doi.org/10.1108/aeat-11-2016-0238.

Full text
Abstract:
Purpose The aim of this study is to develop a die forging process for producing aircraft components made of magnesium alloy AZ61A using a screw press. Design/methodology/approach The proposed forging technique has been developed based on the results of a numerical and experimental research. The required forging temperature has been determined by upsetting cylindrical specimens on a screw press to examine both plasticity of the alloy and the quality of its microstructure. The next stage involved performing numerical simulations of the designed forging processes for producing forgings of a door handle and a bracket, both made of magnesium alloy AZ61A. The finite element method based on simulation programme, Deform 3D has been used for numerical modelling. The numerical results revealed that the forgings are free from material overheating and shape defects. In addition to this, the results have also helped determine the regions that are the most prone to cracking. The final stage of the research involved performing forging tests on a screw press under industrial conditions. The forgings of door handles and brackets were made, and then these were tested for their mechanical and structural properties. The results served as a basis for assessing both the viability of the designed technique and the quality of the produced parts. Findings The experimental results demonstrate that aircraft components made of magnesium alloy AZ61A can be produced by die forging on screw presses. The results have been used to determine the fundamental parameters of the process such as the optimum forging temperature, the method of tool heating, the way of cooling parts after the forging process, and the method of thermal treatment. The results of the mechanical and structural tests confirm that the products meet the required quality standards. Practical implications The developed forging technique for alloy AZ61A has been implemented by the forging plant ZOP Co. Ltd in Swidnik (Poland), which specializes in the manufacturing of aircraft components made of non-ferrous metal alloys. Originality/value Currently, the global tendency is to forge magnesium alloys (including alloy AZ61A) on free hydraulic presses using expensive die-heating systems. For this reason, the production efficiency of such forging processes is low, while the manufacturing costs are high. The proposed forging technique for alloy AZ61A is an innovative method for producing forgings using relatively fast and efficient machines (screw presses). The proposed forging method can be implemented by forging plants equipped with standard stocks of tools, which increases the range of potential manufacturers of magnesium alloy products. In addition, this technology is highly efficient and ensures reduced manufacturing costs.
APA, Harvard, Vancouver, ISO, and other styles
2

Dziubińska, Anna, Piotr Surdacki, and Krzysztof Majerski. "The Analysis of Deformability, Structure and Properties of AZ61 Cast Magnesium Alloy in a New Hammer Forging Process for Aircraft Mounts." Materials 14, no. 10 (May 16, 2021): 2593. http://dx.doi.org/10.3390/ma14102593.

Full text
Abstract:
This article presents the analysis of the deformability, structure and properties of the AZ61 cast magnesium alloy on the example of a new forging process of aircraft mount forgings. It was assumed that their production process would be based on drop forging on a die hammer. Two geometries of preforms, differing in forging degree, were used as the billet for the forging process. It was assumed that using a cast, unformed preform positively affects the deformability of hard-deformable magnesium alloys and flow kinematics during their forging and reduces the number of operations necessary to obtain the correct product. Numerical analysis of the proposed new technology was carried out using DEFORM 3D v.11, a commercial program dedicated to analyzing metal forming processes. The simulations were performed in the conditions of spatial strain, considering the full thermomechanical analysis. The obtained results of numerical tests confirmed the possibility of forming the forgings of aviation mounts from the AZ61 cast magnesium alloy with the proposed technology. They also allowed us to obtain information about the kinematics of the material flow during forming and process parameters, such as strain intensity distribution, temperatures, Cockcroft–Latham criterion and forming energy. The proposed forging process on a die hammer was verified in industrial conditions. The manufactured forgings of aircraft mounts made of AZ61 magnesium alloy were subjected to qualitative tests in terms of their structure, conductivity and mechanical properties.
APA, Harvard, Vancouver, ISO, and other styles
3

YAMAMOTO, Yukio, and Kazuo SAKAMOTO. "Cast-Forging Process for Magnesium Alloy." Journal of the Japan Society for Technology of Plasticity 56, no. 654 (2015): 545–49. http://dx.doi.org/10.9773/sosei.56.545.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Wu, Li Hong. "Simulation and Microstructure Predict during Hot Die-Forging of Cast Mg-7.0Al-0.2Zn Magnesium Alloy." Advanced Materials Research 152-153 (October 2010): 1293–96. http://dx.doi.org/10.4028/www.scientific.net/amr.152-153.1293.

Full text
Abstract:
Employing the dies for aluminum alloy parts, the hot die-forging forming and numerical simulation of semi-continuous casting Mg-7.0Al-0.4Zn (AZ70) were carried out. It was indicated that AZ70 has a worse fluidity during forging and is consequently difficult to fill fully compared to aluminum alloys. The microstructure of the AZ70 forgings is in good agreement with the strain distribution generated by simulation, and strain distribution can predict the microstructure evolution. The comparison results can give a guideline on developing forging process and controlling forgings quality of the AZ70 alloy.
APA, Harvard, Vancouver, ISO, and other styles
5

Kwon, Yong Nam, Young Seon Lee, and Jung Hwan Lee. "Warm Forging Characteristics of AZ31 Alloy." Advanced Materials Research 26-28 (October 2007): 437–40. http://dx.doi.org/10.4028/www.scientific.net/amr.26-28.437.

Full text
Abstract:
Industrial application of magnesium alloys has increased significantly recently. However, wrought magnesium alloys still have a lot of technical challenges to be solved for more applications. First of all, low formability of wrought alloys should be improved by optimizing the processing variables. In the present study, the effect of process variables such as forging temperature and forging speed were investigated to forgeability of magnesium alloy. To understand the effect of process variables more specifically, both numerical and experimental works have been carried out on the model which contains upsetting geometry. Forgeability of AZ31 alloy was found to depend more on the forging speed rather than temperature. Forged sample showed a significant activity of twinning, which was found to be closely related with flow uniformity.
APA, Harvard, Vancouver, ISO, and other styles
6

Ho, Huey Lin, Su Hai Hsiang, and Pao Te Wang. "Study on the Formability of Magnesium Alloy for Bearing Cover with Inner Cavity under Hot Forging." Advanced Materials Research 264-265 (June 2011): 54–59. http://dx.doi.org/10.4028/www.scientific.net/amr.264-265.54.

Full text
Abstract:
This study investigates the formability of AZ31 magnesium alloy for bearing cover with inner cavity under hot forging. Firstly high speed metal test machine of China steel Co. Ltd. is used to carry out the compression tests under different forming temperatures and strain rates to obtain the stress-strain curves. Then, the stress-strain data obtained from compression test under different dies are applied to analyze the formability of magnesium alloy for bearing cover of the car under forging by commercial package DEFORM. Besides, hot forgings of magnesium alloy for bearing cover are carried out to study the formability of magnesium alloy, and to find the best forging condition. Meanwhile, from the measured result of hardness and metallographic observation of forged part, the influence of forming temperatures on the strength and microstructure of magnesium alloy under forging of bearing cover are evaluated. Finally, the Artificial Neural Network (ANN) is applied to learn the data obtained from experiments and to predict the experimental result under new combination of process parameters. Also, confirmatory experiment is carried out to prove the usefulness of the ANN model.
APA, Harvard, Vancouver, ISO, and other styles
7

Xia, Zi Hui, and Feng Ju. "Finite Element Analysis of the Forging Process of Magnesium Wheels." Key Engineering Materials 345-346 (August 2007): 1079–84. http://dx.doi.org/10.4028/www.scientific.net/kem.345-346.1079.

Full text
Abstract:
The high specific strength of the magnesium alloy makes it a valuable choice for automotive, aerospace and sporting industries, where the weight reduction is a critical consideration in design. However, wrought magnesium alloys offer a poor formability at room temperature and a hot working condition is required for the forming process. This paper studies the application of finite element methods for the simulation of the forging of magnesium alloys. Numerical analysis of the forging process of an automotive magnesium wheel is conducted based on the tested flow curve of AZ80. The effect of friction on the final deformation of the upsetting of magnesium billets is also discussed.
APA, Harvard, Vancouver, ISO, and other styles
8

Lin, Qing Fu. "Research on Application of Processing Technology and Magnesium Alloy Materials." Advanced Materials Research 566 (September 2012): 548–51. http://dx.doi.org/10.4028/www.scientific.net/amr.566.548.

Full text
Abstract:
Based on introducing the performance of magnesium alloys materials, analysis of magnesium alloy process performance mainly from chemical activity, electrochemical corrosion, the linear expansion coefficient of magnesium alloy; focuses on six kinds of magnesium alloy forming technology and processing problems in die casting, forging and extrusion forming, semi-solid forming, rapid solidification, provide a reference for magnesium alloy welding and surface coating technology.
APA, Harvard, Vancouver, ISO, and other styles
9

Chen, Fuh Kuo, and Shin Gee Chen. "Press Forging of Thin-Walled AZ31 Magnesium-Alloy Components." Advanced Materials Research 189-193 (February 2011): 1401–5. http://dx.doi.org/10.4028/www.scientific.net/amr.189-193.1401.

Full text
Abstract:
The press forging of AZ31 magnesium-alloy sheets for producing thin-walled structural components used in the electronics industry was examined by both the finite element analysis and the experimental approach in the present study. The experimental results obtained from the compression tests and ring compression tests were employed in the finite element simulations to investigate the effects of process parameters, such as forming temperature, friction condition, embossment location, and sheet thickness on the formation of embossments in a press forging process. The finite element simulation results reveal that a cost-effective press forging process of AZ31 magnesium-alloy requires an optimum combination of the above parameters. The detailed examination of the effects of the process parameters on the formation of embossments made in the present study could provide a design guideline for a press forging process of AZ31 magnesium-alloy sheets.
APA, Harvard, Vancouver, ISO, and other styles
10

Banaszek, Grzegorz, Teresa Bajor, Anna Kawałek, and Tomasz Garstka. "Analysis of the Open Die Forging Process of the AZ91 Magnesium Alloy." Materials 13, no. 17 (September 2, 2020): 3873. http://dx.doi.org/10.3390/ma13173873.

Full text
Abstract:
The paper presents the results of numerical modelling of the forging process of magnesium alloy ingots on a hydraulic press with the use of flat and shaped anvils. The use of shaped (rhombic-trapezoid) anvils will affect the uniform distribution of temperature and strain intensity in the entire volume of the forging, causing a number of forging passes, which in consequence will reduce the costs of the blank manufacturing process. However, higher values of the strain intensity were obtained during the deformation of the material in flat anvils. The purpose of the research was to propose assumptions for forging technology of producing a blank from AZ91 alloy with the use of flat and shaped anvils. Numerical examination for AZ91 magnesium alloy was carried out using the Forge®NxT commercial software. The rheological properties of the investigated alloy were determined on the basis of uniaxial compression tests carried out in the Gleeble 3800 metallurgical simulation system. The numerical analysis of the process of forging AZ91 alloy ingots on a press was conducted in the temperature range of 200–400 °C and at several forging passes.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Dissertations / Theses on the topic "Forging process of magnesium alloy"

1

Lima, Diego Rodolfo Simões de. "Desenvolvimento e controle de processos de conformação da liga de magnésio AZ61." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2012. http://hdl.handle.net/10183/49295.

Full text
Abstract:
O presente trabalho estuda a conformação da liga de magnésio AZ61 pelos processos de extrusão direta e forjamento, ambos a quente. No processo de extrusão, são submetidos à conformação corpos-de-prova da liga de magnésio AZ61 nos estados fundido e recristalizado. As geometrias de ferramenta são variadas e a influência destas variações sobre a força de processamento e propriedades mecânicas e microestrutura do material são analisada. Demonstra-se que a liga no estado inicialmente recristalizado tem propriedades mecânicas finais superiores à liga inicialmente fundida, embora demande de maior força de processamento. Demonstra-se também que a geometria de ferramenta tem influência sobre as respostas mecânicas obtidas das peças após extrusão. Referente ao processo de forjamento, a liga de magnésio AZ61 é processada apenas no estado recristalizado, variando-se a temperatura e o número de tapas de forjamento. Foi avaliada a influência destas variações de processo nas propriedades mecânicas finais da peça. Ao fim, percebe-se que ao se forjar as peças com múltiplas etapas de forjamento e temperaturas decrescentes, impede-se a recristalização do material, alcançando alto encruamento dos grãos, o que gera, na peça final, propriedades mecânicas superiores ao processo convencional.
This thesis studies the deformation of a magnesium alloy AZ61 by forward extrusion and forging processes, at elevated temperatures. In the extrusion process, the samples were deformed in as cast and recrystallized conditions. The tools geometries were variated and the influences on processing force, mechanical properties and material microstructure were analyzed. Was found that the recrystallized samples have better mechanical properties than as cast samples, after extruded, although it requires more processing force. Also was found that the tool geometry influences on mechanical properties and microstructure of extruded magnesium alloy. Relatively to the forging process, magnesium alloy AZ61 was processed only in the recrystallized state, varying the process temperature and the number of forging steps. Aimed to evaluate the process variations influences on the mechanical properties and microstructure of the final parts. At the end, was observed that when forging parts with multi-step forging and decreasing temperatures, to prevent recrystallization of the material, achieving high strain hardening of the grains, which results in final part with superior mechanical properties to the conventional process.
APA, Harvard, Vancouver, ISO, and other styles
2

Bayandorian, Iman. "Magnesium alloy strip produced by a melt-conditioned twin roll casting process." Thesis, Brunel University, 2010. http://bura.brunel.ac.uk/handle/2438/4506.

Full text
Abstract:
Twin roll casting (TRC) offers a promising route for the economic production of Mg sheet, but unfortunately, it produces strip with coarse and non-uniform microstructures and severe centre line segregation. Recently, a novel magnesium strip casting process termed melt conditioned twin roll casting (MC-TRC) was developed that, compared with the conventional TRC process, emphasizes solidification control at the casting stage rather than hot rolling. This was achieved by melt conditioning under intensive forced convection prior to twin roll casting resulting in enhanced heterogeneous nucleation followed by equiaxed growth. In this study the development of TRC and MC-TRC processes and a microstructural comparison of the MC-TRC Mg-alloy strip with that of conventional TRC strip, have been investigated. Emphasis has been focused on the solidification behaviour of the intensively sheared liquid metal, and on the mechanisms for microstructural refinement and compositional uniformity in the MCTRC process. The results of the process development indicate that the MC-TRC process reduces considerably or eliminates defects such as the centre line segregation, voids and cracks at or near the strip surface that are always present in conventional TRC strip. The newly-designed homogenization treatment investigated for TRC and MC-TRC magnesium alloy strips was based on microstructural evolution obtained during heat treatment. The results of the MC-TRC strips showed a much faster recrystallization rate with finer recrystallized grains, which are due to more homogeneous and a finer grain size of the as-cast MC-TRC strips compared with the as-cast TRC strips. During down-stream processing, the effects of MC-TRC process on microstructural evolution of hot-rolled magnesium strips have been understood thoroughly by accurate control of the hot-rolling procedure during each step of strip thickness reduction. This study indicates that the MC-TRC strip requires fewer rolling steps when compared to TRC strip, thus offering reduced processing cost and carbon footprint. Mechanical properties at room temperature of MC-TRC as-cast and rolled sheets are much improved when compared with the conventional TRC as-cast and rolled sheets which can result in a higher quality of final components. The mechanical properties at elevated temperature shows for the first time that the higher elongation and lower yield strength of MC-TRC as-cast strips at a temperature close to its optimised hot-rolling temperature results in better ability for rolling and higher ductility of MC-TRC Mg strip compared with the TRC Mg strip.
APA, Harvard, Vancouver, ISO, and other styles
3

Guan, Xiaofei. "Novel process for recycling magnesium alloy employing refining and solid oxide membrane electrolysis." Thesis, Boston University, 2013. https://hdl.handle.net/2144/11005.

Full text
Abstract:
Thesis (Ph.D.)--Boston University
Magnesium is the least dense engineering metal, with an excellent stiffness-to-weight ratio. Magnesium recycling is important for both economic and environmental reasons. This project demonstrates feasibility of a new environmentally friendly process for recycling partially oxidized magnesium scrap to produce very pure magnesium at low cost. It combines refining and solid oxide membrane (SOM) based oxide electrolysis in the same reactor. Magnesium and its oxide are dissolved in a molten flux. This is followed by argon-assisted evaporation of dissolved magnesium, which is subsequently condensed in a separate condenser. The molten flux acts as a selective medium for magnesium dissolution, but not aluminum or iron, and therefore the magnesium collected has high purity. Potentiodynamic scans are performed to monitor the magnesium content change in the scrap as well as in solution in the flux. The SOM electrolysis is employed in the refining system to enable electrolysis of the magnesium oxide dissolved in the flux from the partially oxidized scrap. During the SOM electrolysis, oxygen anions are transported out of the flux through a yttria stabilized zirconia membrane to a liquid silver anode where they are oxidized. Simultaneously, magnesium cations are transported through the flux to a steel cathode where they are reduced. The combination of refining and SOM electrolysis yields close to 100% removal of magnesium metal from partially oxidized magnesium scrap. The magnesium recovered has a purity of 99.6w%. To produce pure oxygen it is critical to develop an inert anode current collector for use with the non-consumable liquid silver anode. In this work, an innovative inert anode current collector is successfully developed and used in SOM electrolysis experiments. The current collector employs a sintered strontium-doped lanthanum manganite (La0.8Sr0.2Mn03-δ or LSM) bar, an Inconel alloy 601 rod, and a liquid silver contact in between. SOM electrolysis experiments with the new LSM-Inconel current collector are carried out and performance comparable to the state-of-the-art SOM electrolysis for Mg production employing the non-inert anode has been demonstrated. In both refining and SOM electrolysis, magnesium solubility in the flux plays an important role. High magnesium solubility in the flux facilitates refining. On the other hand, lower magnesium solubility benefits the SOM electrolysis. The dissolution of magnesium imparts electronic conductivity to the flux. The effects of the electronic conductivity of the flux on the SOM electrolysis performance are examined in detail through experiments and modeling. Methods for mitigating the negative attributes of the electronic conductivity during SOM electrolysis are presented.
APA, Harvard, Vancouver, ISO, and other styles
4

Tantipaibulvut, Chairath. "An evaluation of the production of magnesium base alloy castings by the expendable pattern casting process." Thesis, Loughborough University, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.250959.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Okcu, Isik Yilmaz. "Effect Of Process Parameters On Mechanical Properties Of High Pressure Die Cast Magnesium Az91 Components." Master's thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613896/index.pdf.

Full text
Abstract:
Before beginning the experimental work of this study, a magnesium high pressure die casting facility is set up to manufacture magnesium cast parts for defence industry. In this thesis two components are cold chamber high pressure die casted using magnesium alloy AZ91 as raw material, and one component was manufactured using both aluminium alloy A.413, and magnesium alloy AZ91. Mechanical properties of high pressure die casting parts depend on various parameters such as, thickness of the cast part, position of the cast part in the cavity, molten metal temperature, die temperature, piston speeds, and injection pressure. The aim of this study is to investigate the effects of section thickness of the cast part, position of the cast part in the die cavity, piston speeds, and molten metal temperature on mechanical properties of magnesium die cast parts. Tensile properties of products from Al A.413 and Mg AZ91 alloys are also compared. Casting analysis software is used to simulate filling and temperature evolution of three different casting components. Piston speeds are first calculated from equations in the literature and then verified by using the software. Specimens for microstructural investigation, and mechanical tests are machined directly from the mass produced parts. Optical microscopy, and scanning electron microscopy investigations are carried out for grain size and porosity determination. Tensile tests are conducted for yield strength, ultimate tensile strength, and % elongation values. The results of casting analysis software simulations, grains size investigations, porosity investigations, and tensile tests are correlated to each other. Optimum piston speeds, optimum molten metal temperatures are observed, effect of grain size and porosity concentrations on the effect of mechanical properties are compared. Weight of cast parts produced from Mg AZ91 are 35 % lower than that of Al A.413 parts. However, ultimate tensile strength of the cast parts produced from Mg AZ91 are found to be similar to the aluminium parts.
APA, Harvard, Vancouver, ISO, and other styles
6

Ghasemi, Abyazani Alireza [Verfasser]. "Contribution to understanding the formation process and corrosion protection of the PEO coating on AM50 magnesium alloy / Alireza Ghasemi Abyazani." Clausthal-Zellerfeld : Universitätsbibliothek Clausthal, 2011. http://d-nb.info/1013490460/34.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Klarner, Andrew Daniel. "Development of Mg-Al-Sn and Mg-Al-Sn-Si Alloys and Optimization of Super Vacuum Die Casting Process for Lightweight Applications." The Ohio State University, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=osu1515083355012541.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Ho, Yee Hsien. "In Vitro Behavior of AZ31B Mg-Hydroxyapatite Metallic Matrix Composite Surface Fabricated via Friction Stir Processing." Thesis, University of North Texas, 2016. https://digital.library.unt.edu/ark:/67531/metadc862762/.

Full text
Abstract:
Magnesium and its alloys have been considered for load-bearing implant materials due to their similar mechanical properties to the natural bone, excellent biocompatibility, good bioactivity, and biodegradation. Nevertheless, the uncontrollable corrosion rate in biological environment restrains their application. Hydroxyapatite (HA, Ca10(PO4)6(OH)2) is a widely used bio-ceramic which has bone-like mineral structure for bone fixation. Poor fracture toughness of HA makes it not suitable for load-bearing application as a bulk. Thus, HA is introduced into metallic surface in various forms for improving biocompatibility. Recently friction stir processing (FSP) has emerged as a surface modification tool for surface/substrate grain refinement and homogenization of microstructure in biomaterial. In the pressent efforts, Mg-nHA composite surface on with 5-20 wt% HA on Mg substrate were fabricated by FSP for biodegradation and bioactivity study. The results of electrochemical measurement indicated that lower amount (~5% wt%) of Ca in Mg matrix can enhance surface localized corrosion resistance. The effects of microstructure,the presence of HA particle and Mg-Ca intermetallic phase precipitates on in vitro behavior of Mg alloy were investigated by TEM, SEM, EDX,XRD ,and XPS. The detailed observations will be discussed during presentation.
APA, Harvard, Vancouver, ISO, and other styles
9

Cabrol, Elodie. "Étude et compréhension des mécanismes d'endommagement de surface de matrices de forgeage à chaud rechargées." Thesis, Ecole nationale des Mines d'Albi-Carmaux, 2015. http://www.theses.fr/2015EMAC0012.

Full text
Abstract:
Dans le domaine du forgeage à chaud de pièces aéronautiques, les matrices en acier sont couramment rechargées, sur quelques millimètres d’épaisseur, par un alliage base cobalt (Stellite 21) déposé par procédé de soudage à l’arc (MIG). Dans le cadre de ce travail de thèse, ce rechargement « classique» est comparé à des rechargements Stellite 21 et Stellite 6 déposés par deux procédés émergents dans ce domaine, le PTA et le LASER. L’objectif est d’apporter des éléments de compréhension aux mécanismes d’endommagement de surface, notamment par écoulement plastique, de ces différents rechargements afin de dégager des voies d’amélioration pour augmenter la durée de vie des matrices. Pour cela, des essais tribologiques (semi-industriels et laboratoire) ont été mis en œuvre pour créer des endommagements de surface comparables à ceux observés sur matrices industrielles. Associées à ces essais, des investigations microstructurales, structurales et mécaniques multi-échelles ont été réalisées (traction, flexion, microdureté, MO, MEB, MEB-STEM, DRX, EBSD). Selon les couples « nuance/procédé » de rechargement, des mécanismes de déformation plastique par glissement des dislocations parfaites et par transformation de phase CFC en HC ont été identifiés. L’activation de ce dernier a pu être reliée à la température de transformation allotropique CFC/HC du cobalt. Cette température dépend à la fois (i) des éléments d’addition, variant en fonction de la nuance déposée (Cr, C,...), (ii) de la dilution (variation de la teneur en Fe) liée aux paramètres de soudage et (iii) du nombre de couches déposées. De plus, une influence significative de la transformation de phase sur l’évolution du coefficient de frottement a été mise en évidence. En effet, dans le cas où la transformation de phase n’est pas observée, le coefficient de frottement est stable durant l'essai alors qu'une chute de la courbe de coefficient de frottement a été reliée avec la transformation de phase CFC en HC. Parallèlement, l'écoulement plastique des dendrites est observé en extrême surface sur quelques dizaines de micromètre d'épaisseur dans la direction de glissement. Cet écoulement est associé à une forte texturation morphologique et cristallographique de la phase identifiée (CFC ou HC), avec une orientation des plans de plus grande densité atomique parallèlement à la surface de glissement. Les résultats montrent également que sous sollicitations tribologiques, un important durcissement est observé en surface (jusqu'à 90%) et une corrélation a pu être établie entre l'augmentation de la microdureté et le taux de déformation plastique
In the field of hot forging of aeronautical parts, the steel dies are commonly hardfaced, on few millimeters thick, by a cobalt-based alloy (Stellite 21) deposited by arc welding (MIG). As part of this thesis, this "classic" hardfacing is compared to Stellite 21 and Stellite 6 hardfacings deposited by two emerging processes in this area, the PTA and the LASER one. The objective is to assess surface damage mechanisms, especially induced by plastic strain, of these various hardfacings. Tribological tests (laboratory and semi-industrial) were used to create surface damage comparable to those observed in industrial dies. Associated with these tests, multiscale microstructural, structural and mechanical investigations have been performed (tensile, bending, microhardness, OM, SEM, STEM, XRD, EBSD). According to the « material/process » couple, plastic strain mechanisms by perfect dislocation glide and by FCC to HCP phase transformation have been identified. The activation of the latter has been connected to the temperature of the allotropic phase transformation (FCC/HCP) in cobalt. This temperature depends on (i) the alloying elements, varying according to the deposited grade (Cr, C, ...), (ii) the dilution (Fe content evolution) connected to the welding parameters and (iii) the number of deposited layer. Moreover, a significant influence of the phase transformation on the evolution of the friction coefficient has been evidenced. Indeed, if the phase transformation is not observed, the friction coefficient is stable during the test, while a drop of the friction coefficient curve is connected with the FCC to HCP phase transformation. Moreover, the plastic flow of dendrites is observed at the extreme surface, on a few tens of micrometres in thickness, in the direction of sliding. It is associated with a high morphologic and crystallographic texturing of the identified phase (FCC or HCP), with the highest atomic density planes mostly oriented parallel to the sliding surface. The results also show that, under tribological laodings, a significant hardening is observed on the surface (up to 90%) and a correlation has been established between the increase in the microhardness and the plastic deformation ratio
APA, Harvard, Vancouver, ISO, and other styles
10

Huang, Po-Yao, and 黃柏堯. "Study on Formability of Magnesium Alloy under Forging Process." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/tzhw3c.

Full text
Abstract:
碩士
國立臺灣科技大學
機械工程系
94
This study investigated the mechanical properties and forming characteristics of AZ31 and AZ61 magnesium alloys under hot working. Compression tests were carried out under various forming temperatures to study the relation of stress and strain. Then, the ring compression tests were carried out under various forming temperatures and friction conditions to determine the friction factor in the interface between the die and the specimen. In addition, flange forging were performed under various process parameters to find the best forming condition for low load and smooth surface. Finally, the optical microscope was used to analyze the change of microstructure and evaluate the relation between micro hardness and compression strain. It is expected to be helpful to academic research and related industry.
APA, Harvard, Vancouver, ISO, and other styles
More sources

Books on the topic "Forging process of magnesium alloy"

1

Tantipaibulvut, Chairath. An evaluation of the production of magnesium base alloy castings by the expendable pattern casting process. 1997.

Find full text
APA, Harvard, Vancouver, ISO, and other styles

Book chapters on the topic "Forging process of magnesium alloy"

1

Rao, K. P., K. Suresh, N. Hort, and K. U. Kainer. "Spike-Forging of As-Cast TX32 Magnesium Alloy." In Magnesium Technology 2014, 273–79. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118888179.ch52.

Full text
APA, Harvard, Vancouver, ISO, and other styles
2

Rao, K. P., K. Suresh, N. Hort, and K. U. Kainer. "Spike-Forging of As-Cast TX32 Magnesium Alloy." In Magnesium Technology 2014, 275–79. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-48231-6_52.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Zhang, Shi Hong, Zhang Gang Li, Yong Chao Xu, Li Mei Ren, Zhong Tang Wang, and Li Xin Zhou. "Press Forging of Magnesium Alloy AZ31 Sheets." In THERMEC 2006, 1753–58. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-428-6.1753.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Zhang, Shi-Hong, Kun Zhang, Zhong-Tang Wang, Chuan-Fu Yu, Yi Xu, and Ke Yang. "Numerical Simulation of Magnesium Alloy Sheet in Thermal Deep-drawing Process." In Magnesium, 848–53. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603565.ch132.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Yong, M. S., and S. C. V. Lim. "Investigating the Plastic Deformation Behaviour of Magnesium Alloy AZ31 by Plane Strain Forging of U and H Section." In Magnesium, 260–65. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603565.ch40.

Full text
APA, Harvard, Vancouver, ISO, and other styles
6

den Bakker, A. J., W. H. Sillekens, J. Bohlen, K. U. Kainer, and G. Barton. "The MAGNEXTRUSCO Project: Process and Alloy Development for Hydrostatic Extrusion of Magnesium." In Magnesium, 324–30. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2005. http://dx.doi.org/10.1002/3527603565.ch50.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Yan, Hong, Bing Feng Zhou, and Wei Pan. "Study on Thixo-Forging of AZ61 Wrought Magnesium Alloy." In Solid State Phenomena, 677–82. Stafa: Trans Tech Publications Ltd., 2008. http://dx.doi.org/10.4028/3-908451-59-0.677.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Rao, K. P., C. Dharmendra, Y. V. R. K. Prasad, H. Dieringa, and N. Hort. "Hot Forging Behavior of Mg−8Al−4Ba−4Ca (ABaX844) Alloy and Validation of Processing Map." In Magnesium Technology 2018, 289–96. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-72332-7_45.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Henry, Dominic, Mark Turski, Paul Lyon, and Tim Wilks. "An Introduction to the Forging of Elektron®43 - A High Performance Wrought Magnesium Alloy." In Magnesium Technology 2014, 281–84. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118888179.ch53.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Henry, Dominic, Mark Turski, Paul Lyon, and Tim Wilks. "An Introduction to the Forging of Elektron®43 — A High Performance Wrought Magnesium Alloy." In Magnesium Technology 2014, 281–84. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-48231-6_53.

Full text
APA, Harvard, Vancouver, ISO, and other styles

Conference papers on the topic "Forging process of magnesium alloy"

1

Hsiang, Su-Hai, Yi-Cheng Hong, Huey-Lin Ho, and Shiuh-Kuang Yang. "Study on the Formability of Magnesium Alloy Parts Under Hot Forging Process." In ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/esda2012-82021.

Full text
Abstract:
This study investigates the formability of AZ31 and AZ61 magnesium alloy for bicycle parts under hot forging process. Firstly, finite element software DEFORM is applied to simulate the deformation behaviors of magnesium alloys bicycle parts under different process parameters. The process parameters considered in the simulation are materials heating temperatures, lubricants and punch speeds. Changes in process parameters, the forging loads and the completeness of filling of material in die cavity are discussed. The optimal forging condition can be obtained from evaluation of the completeness of filling of material in die cavity, forging load and distribution of stress and strain. The experimental conditions are set according to the optimal simulation results. Hot forging experiments are carried out under the condition of heating range from 240°C to 350°C, different kind of lubricants, constant punch speeds 0.9mm/s to study the formability of magnesium alloy for bicycle parts. The experimental results are compare with the DEFORM simulation results. The obtained forging loads and completeness of filling are in good agreement with the simulation results. The validity of the simulation model established in this study can be confirmed. Finally, from the measured result of hardness and metallographic observation of forged part, the influence of forging temperatures on the strength and microstructures of magnesium alloy for bicycle parts under forging process can be evaluated.
APA, Harvard, Vancouver, ISO, and other styles
2

Gontarz, A., Z. Pater, K. Drozdowski, A. Tofil, and J. Tomczak. "FEM ANALYSIS OF THE FORGING PROCESS OF HUB PART FROM AZ80 MAGNESIUM ALLOY." In 10th World Congress on Computational Mechanics. São Paulo: Editora Edgard Blücher, 2014. http://dx.doi.org/10.5151/meceng-wccm2012-16805.

Full text
APA, Harvard, Vancouver, ISO, and other styles
3

Shan, Debin. "Research On Isothermal Precision Forging Processes Of A Magnesium-Alloy Upper Housing." In MATERIALS PROCESSING AND DESIGN: Modeling, Simulation and Applications - NUMIFORM 2004 - Proceedings of the 8th International Conference on Numerical Methods in Industrial Forming Processes. AIP, 2004. http://dx.doi.org/10.1063/1.1766598.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Sheng, Z. Q. "Material Behavior Based Hybrid Process for Sheet Draw-Forging Thin Walled Magnesium Alloys." In NUMISHEET 2005: Proceedings of the 6th International Conference and Workshop on Numerical Simulation of 3D Sheet Metal Forming Process. AIP, 2005. http://dx.doi.org/10.1063/1.2011290.

Full text
APA, Harvard, Vancouver, ISO, and other styles
5

Al-Badour, Fadi, Abdulrahman Alghamdi, Akeem Y. Adesina, Rami K. Suleiman, and Neçar Merah. "Friction Stir Diffusion Bonding of Magnesium Alloy ZK 60 to Steel." In ASME 2021 16th International Manufacturing Science and Engineering Conference. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/msec2021-60179.

Full text
Abstract:
Abstract Friction stir diffusion bonding (FSDB); a derived process from friction stir lap welding, was used in this investigation to produce a solid-state lap joint between magnesium alloy ZK 60-T5 and steel ASTM A 516-70. In FSDB, a conventional friction stir welding tool was used where the tool pin did not penetrate the substrate. The developed heat due to friction and forging forces exerted by the tool facilitated the diffusion process between the lapped sheets. In this work, the effects of process conditions on fabricated joints strength and microstructural changes were studied. The design of the experiment was developed based on Taguchi L9 to study four variables; i.e. tool rotational, and welding speeds, tool pin length, and tool tilt angle, with three levels at each parameter. The developed matrix was ranked based on the impact of an individual parameter on heat input, i.e low, intermediate, and high. Tensile-shear tests were performed to study the fabricated joints’ strength. The microstructure of the developed interface between the magnesium alloy and steel was analyzed with an optical microscope, scanning electron microscopy (SEM), and energy-dispersive spectroscopy (EDS) techniques. At optimum conditions, tensile failure was found to occur in magnesium alloy; within the nugget zone, with a noticeable drop in the tensile strength as compared to the base (unprocessed) alloy.
APA, Harvard, Vancouver, ISO, and other styles
6

Jones, Joshua J., and John T. Roth. "Effect on the Forgeability of Magnesium AZ31B-O When Continuous DC Electricity is Applied." In ASME 2009 International Manufacturing Science and Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/msec2009-84116.

Full text
Abstract:
Currently, the automotive and aircraft industries are considering increasing the use of magnesium within their products due to its favorable strength-to-weight characteristics. However, the implementation of this material is problematic as a result of its limited formability. Partially addressing this issue, previous research has shown that Electrically-Assisted Manufacturing (EAM) improves the tensile formability of magnesium sheet metal. While these results are highly beneficial towards fabricating the skin of the vehicle, a technique for improving the production of the structural/mechanical components is also desirable. Given the influence that EAM has already exhibited on tensile deformation, the research herein focuses on incorporating this technique within forging operations. The potential benefit of using EAM on compressive processes has been demonstrated in related research where other materials, such as titanium and aluminum, have shown improved compressive behavior. Therefore, this research endeavors to amalgamate these findings to Mg AZ31B-O, which is traditionally hard to forge. As such, to demonstrate the effects of EAM on this alloy, two series of tests were performed. First, the sensitivity of the alloy to the EAM process was determined by varying the current density and platen speed during an upsetting process (flat dies). Then, the ability to utilize impression (shaped) dies was examined. Through this study, it was shown that the EAM process increases the forgeability of this magnesium alloy through improvements such as decreased machine force and increased achievable deformation. Additionally, the ability to form the desired final specimen geometry was achieved.
APA, Harvard, Vancouver, ISO, and other styles
7

Lim, S. C. V., M. S. Yong, and C. M. Choy. "Evaluating Plane-strain Forging of Magnesium Alloy AZ31 Using Finite Element Analysis." In Proceedings of the International Conference on Scientific and Engineering Computation (IC-SEC) 2002. PUBLISHED BY IMPERIAL COLLEGE PRESS AND DISTRIBUTED BY WORLD SCIENTIFIC PUBLISHING CO., 2002. http://dx.doi.org/10.1142/9781860949524_0116.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

LUO, JIAN-CHENG, XIN-YUN WANG, MEI-LING GUO, JU-CHEN XIA, and YUN-HUA LUO. "STAMPING-FORGING PROCESS OF AN ALUMINUM ALLOY PAN." In Proceedings of the 10th Asia-Pacific Conference. WORLD SCIENTIFIC, 2011. http://dx.doi.org/10.1142/9789814324052_0047.

Full text
APA, Harvard, Vancouver, ISO, and other styles
9

Ji Ze Sheng and Hu Mao Liang. "Magnesium alloy and aluminium alloy fabricated by solid recycling process." In 2013 8th International Forum on Strategic Technology (IFOST). IEEE, 2013. http://dx.doi.org/10.1109/ifost.2013.6616961.

Full text
APA, Harvard, Vancouver, ISO, and other styles
10

Nor, Fethma M., Muhammad Amin Sidek, Daisman P. B. Aji, and Denni Kurniawan. "Finite element analysis of multidirectional forging dies for severe plastic deformation of magnesium alloy." In 1ST INTERNATIONAL SEMINAR ON ADVANCES IN METALLURGY AND MATERIALS (i-SENAMM 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0015838.

Full text
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the extended bibliographies on the topic 'Forging process of magnesium alloy' for particular source types:
Journal articles Dissertations / Theses
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography