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manufacturing a tial alloy by high energy ball milling

Solid State Reaction Mechanism and Microstructure Evolution of Ni-Al ...

this initial stage contain two factors to form b2-nial: (i) a sufficiently high heat generation rate was achieved by decreasing elemental domain size when there is sufficient contact between elemental ni and al; (ii) some "first" phase, such as nial 3 or ni 2 al 3, was formed by a diffusion reaction due to some conditions of local composition and .

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Recent Advances on Preparation Method of Ti-Based Hydrogen Storage Alloy

Arc smelting is extremely conventional method to apply to Ti-based hydrogen storage alloys by comparing with the remaining two smelting methods, because it is more suitable for the requirements of practical application such as low cost, high efficiency as well as simple operation. 2.2. Rapid Quenching.

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Oxide dispersion strengthening of γ-TiAl by laser additive manufacturing

The milling process is conducted in a planetary mill (Pulverisette 4 Classic line, Fritsch , Germany) equipped with zirconia grinding bowls and yttrium stabilized zirconia (YSZ) grinding balls (diameter: 5 mm). The milling procedure is characterized by three milling intervals of 20 min (total milling time: 120 min) in an argon atmosphere for protection of atmospheric oxidation.

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Additive Manufacturing of Ti-48Al-2Cr-2Nb Alloy Using Gas ... - MDPI

presented in Section3.1. The second powder of TiAl-alloy was produced in-house by MA and PS processes. Preliminary experiments of the MA process were carried out using a Fritsch Pulverisette 4 planetary mill by milling the elemental powders of Ti, Al, Cr, and Nb (with 99.9% purity) blended with the proportion of Ti-48Al-2Cr-2Nb (at. %) alloy.

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Laser additive manufacturing of intermetallic alloys for high ...

additive manufacturing of Fe-, Ni-, Ti-based and y-TiAl alloys and the positive effect on mechanical properties has been demonstrated for various material systems [19-24]. It leads to increased hardness and strength. Nevertheless, the effect in structural intermetallic materials for high temperature applications is still widely unexplored.

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JO - The Minerals, Metals & Materials Society

TiAl - based alloys Refractory alloys High-entropy alloys More. Table of Contents JO About JOM: The scope of JOM (ISSN 1047-4838) encompasses publicizing news about TMS and its members and ... Ball Milling: M. R. Pagnola, F. Morales, P. Tancredi, and L. M. Socolovsky

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Manufacturing of PAM-Only Processed Titanium Alloys (English)

The Effect of Ball Milling on the Polymorphous Transformation of TiO~2 (Anatase Type) Setoudeh ... Some Recent Work on Alloy and Process Development of Ti and TiAl Alloys. Wu, X. / Loretto, M. H. / Hu, D. | 2003. ... Growth Behaviors of Alpha Cases in Ti-6Al-4V and Ti-10V-2Fe-3Al Alloys during High Temperature Heat Treatment in Air. Sugiura, Y ...

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Microstructure and properties of powder metallurgical manufactured V ...

Tailored pre-alloyed V-Si(-B) powder material was consolidated via two different powder metallurgical processing routes, namely a standardized field assisted sinter process (FAST) and an innovative generative manufacturing process (L-DED), and compared against each other in order to determine microstructure-property relationships.

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Manufacturing of Titanium for Critical Applications Hydrogenated ...

The powder-based rolled mill Ti-6Al-4V products form static tensile, fatigue, and fracture properties that match similarly-processed ingot-based Ti-6Al-4V hot-rolled products The blended elemental hot-rolled P/M Ti-6Al-4V alloy mill products met the AMS Specification mechanical property requirements for both static loading, as well

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Synthesis and Characterization of Nano Ti-50%Al by ... - SpringerLink

Part of the Advanced Structured Materials book series (STRUCTMAT, volume 54) Abstract In this chapter, powder metallurgy process of TiAl nano alloys were performed via mechanical alloying (MA) of Ti-50%Al powder using planetary ball milling equipment.

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Journal of Alloys and Compounds - University of Wollongong

A comparative study of a NiTi alloy subjected to uniaxial monotonic and cyclic loading-unloading in tension using digital image correlation: The grain size effect 2020; Enhanced thermoelectric performance of BiSbTe alloy: Energy filtering effect of nanoprecipitates and the effect of SiC nanoparticles 2020; In-situ neutron diffraction characterization on the phase evolution of y-TiAl alloy ...

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In situ synchrotron high-energy X-ray diffraction analysis on phase ...

Mixtures of 47-Al and 53-Ti powders (atomic %) have been consolidated using back pressure equal-channel angular pressing starting with both raw and ball-milled powders. In situ synchrotron high-energy X-ray diffraction studies are presented with continuous Rietveld analysis obtained upon a heating ramp from 300 K to 1075 K performed after the ...

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Ali Mohammadnejad - Sharif University of Technology - LinkedIn

Effects of milling time (with rotation speed 350 rpm and ball to powder ratio 10:1) on the. Nanocrystalline TiAl intermetallic compound was synthesized by mechanical alloying (MA) of elemental Ti and Al powders. TiAl intermetallic alloy is known as an emerging group of materials for demanding high-temperature aerospace and structural ...

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Study on the RF inductively coupled plasma spheroidization of ...

400-600 rounds per minute and milling time was 2h, 4h and 6h, respectively. The milling median employed in high energy milling process was zirconia ball with diameter of 5mm and ball-to-powder ratio was 30:1. Argon served as protective gas during whole milling process. To avoid pollution, dry-milling method was employed. Both pure

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Advanced Engineering Materials: Early View - Wiley Online Library

V addition makes Ti-45%Al alloy change from γ-TiAl alloy to ... a hard rolling ball burnish on the surface of target metals is placed to induce plastic deformation that leads to grain refinement, compressive residual stresses, and better surface integrity, which result in higher hardness, higher wear resistance, and higher fatigue ...

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Mechanical Alloying of γ TiAl-Based Powder of Ti-46Al-1B (at ...

Jan 18, 2022Abstract. An ultrafine-grained γ-titanium aluminide-based alloy powder with a nominal composition of Ti-46Al-1B (at. %) was produced using high-energy ball milling process using the mechanical alloying route for elemental powder of constituent elements.

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TiAl Intermetallics | Scientific.Net

Abstract: In this paper, TiH 2 -47Al-5Nb (at.%) and TiH 2 -47Al-7Nb (at.%) alloys were mixed and synthesized using TiH 2, Al and Nb powders. The composition and morphology evolution of the mixed powder were systematically investigated during high energy ball milling.

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Drilling Process in γ-TiAl Intermetallic Alloys. - Europe PMC

Components manufacturing for the aeronautic sector is a high ... have also investigated the effects of operating parameters and conditions on tool life and surface integrity when milling γ-TiAl alloys [26,27 ... Aspinwall D.K., Sage C., Voice W. High speed ball nose and milling of γ-TiAl alloys. Intermetallics. 2013; 32:284-291. doi: 10 ...

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Processing and Characterization of β Titanium Alloy Composite Using ...

1. Introduction. Titanium matrix composites (TMCs) are increasingly being studied because of their high-strength properties, high stiffness, and good strength at elevated temperatures; moreover, there are advantages to using titanium alloys as a matrix, which are low-density and resistant to atmospheric corrosion [1,2].Taking into account the listed properties, TMCs are being considered as ...

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CvPage - Seyed Farshid Kashani Bozorg - دانشگاه تهران

Amir Ebrahimi Purkani, and Seyed Farshid Kashani Bozorg. "Nanocrystalline Mg2Ni - based powders produced by high - energy ball milling and subsequent annealing." JOURNAL OF ALLOYS AND COMPOUNDS 456, no. 1-2 (2008): 211-215. Alborz Amirsadeghi, Mahmoud Heydarzadeh Sohi, and Seyed Farshid Kashani Bozorg.

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Department of Metallurgical and Materials Engineering (Publications)

B, "Ultrafine grained Ti-47Al-2Cr (at %) alloy prepared by high energy mechanical milling and hot Isostatic pressing", Advanced Materials Research Volume :29 / 139 / 2007 R.K. Goyal, A.N. Tiwari, U.P. Mulik, Y.S. Negi, "Novel high performance Al2O3/Poly(ether-ether-ketone) nanocomposites for electronics applications", Composites Science and ...

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Application Note Library - Nanoanalysis - Oxford Instruments

The highest acquisition speed achieved was 870Hz with a hit rate >98% at 20kV acceleration voltage and 16.6nA probe current. Download In situ EBSD Analysis of a Bent Al Alloy This study presents changes in microstructure characterised by EBSD in the tensile region of a bent Al alloy 6063 sheet during in-situ isochronal heating.

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[PDF] Effects of Ball Milling Processing Conditions and Alloy ...

The high-energy ball milling method was adopted to explore the influence of ball milling parameters, such as milling speed and additive amounts of process control agent (PCA) on tungsten powder. The. 11 PDF Effect of process control agent on the porous structure and mechanical properties of a biomedical Ti-Sn-Nb alloy produced by powder metallurgy.

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Effects of Ball Milling Processing Conditions and Alloy ... - MDPI

In order to make a better observation of alloying process during ball milling after the addition of CuO, we performed a two-step ball milling procedure. Figure 1. X-ray diffraction patterns of ( a) Cu 65 Nb 5 Ag 10 (CuO) 10 and ( b) Cu 65 Mo 5 Ag 10 (CuO) 10 alloys after 10, 20, and 30 h of milling. 3.2.2. Two-Step Ball Milling

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Transition Metal Aluminide Coatings and Initial Steps on Additive ...

TiAl-based alloys can be more sensitive to the high temperature oxidation occurring within the flame resulting in high oxidation . The hardness and wear performance of plane titanium aluminide HVOF coatings have not been much investigated unlike other of the conventional processes such as plasma spraying, whose hardness values can reach 589 HV ...

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Oxidation Resistance of γ-TiAl Based Alloys Modified by C, Si and ...

This work aimed to study the oxidation resistance of γ-TiAl based alloy, doped with small concentrations of carbon, silicon, and yttrium oxide in air at 800 and 1100 °C for 30 h. The TNM-B1 alloy samples were produced via high-energy ball milling, self-propagating high-temperature synthesis, and hot isostatic pressing techniques.

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New 'High-Entropy' Alloy Is As Light As Aluminum ... - NC State News

Abstract: A low density, nanocrystalline high-entropy alloy, Al 20 Li 20 Mg 10 Sc 20 Ti 30 was produced by mechanical alloying. It formed a single-phase fcc structure during ball milling and transformed to single-phase hcp upon annealing.

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CN103143709B - Method for manufacturing TiAl intermetallic ... - Google

the manufacturing process of tial intermetallic compound part mainly contains at present: (1) casting; (2) plastic working.adopt casting method, although the shaping of member is relatively easy,...

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Strengthening Mechanisms of 15 vol.% Al 2 O 3 Nanoparticles Reinforced ...

Acta Metallurgica Sinica (English Letters) ›› 2022, Vol. 35 ›› Issue (6): 915-921. DOI: 10.1007/s40195-021-01306-1 Previous Articles Next Articles Strengthening Mechanisms of 15 vol.% Al 2 O 3 Nanoparticles Reinforced Aluminum Matrix Nanocomposite Fabricated by High Energy Ball Milling and Vacuum Hot Pressing . Ke Zhao 1, 2 (), Zhongying Duan 1, 2, Jinling Liu 1, 2, Guozheng Kang 1, 2 ...

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Strengthening Mechanisms of 15 vol.% Al 2 O 3 Nanoparticles Reinforced ...

Strengthening Mechanisms of 15 vol.% Al 2 O 3 Nanoparticles Reinforced Aluminum Matrix Nanocomposite Fabricated by High Energy Ball Milling and Vacuum Hot Pressing Ke Zhao1,2(), Zhongying Duan1,2, Jinling Liu1,2, Guozheng Kang1,2, Linan An3 RichHTML 4 PDF (PC) 84 Abstract Abstract:

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Controllable two-scale network architecture and enhanced mechanical ...

Gu et al. 21 studied the mechanical alloying of Ti-Si powder mixture using high-energy ball milling at ambient temperature. A significant increase in solid solubility of Si in Ti was achieved by...

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Effect of High-Energy Ball Milling on Structure and Properties of Some ...

The past few years have witnessed a rapid growth in the investigation and understanding of τ-MnAl intermetallic alloys prepared by high-energy ball milling. It has been mentioned that, in the equilibrium, the solid solubility of aluminum in α-Mn is 2 at.%; however, mechanical alloying markedly increased this value and induced important phase transitions [ 119 ].

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Vijay Navaratna Nadakuduru - Malaviya National Institute of Technology ...

Synthesis of Sub-microcrystalline TiAl based alloy powder using high energy ball milling: Webinar on Materials Science Congress (Invited Talk) Webinar: Nov-2020: 5: Talk: Synthesis of Light Alloy Materials into near net/ net shapes via Powder Metallurgy route: Organized by IIM Jaipur Chapter and MNIT Jaipur, Expert Lecture Series: Jaipur: Oct ...

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Effects of Ball Milling Processing Conditions and Alloy Components on ...

1. Introduction. Mechanical alloying (MA) is a well-known way in processing advanced materials involving repeated welding and fracturing the powder particles in a high energy ball mill [1,2].First developed by Benjamin and his co-workers in 1970s [3,4], this processing method has been shown the potential in synthesizing supersaturated solid solutions, amorphous alloys, nano-crystalline ...

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Empa - Communication - research award

Conventional wisdom is that classical powder metallurgy is the only available method to create ODS alloys from powders to which oxides were added via ball milling in a pure solid-state process: if these composite powders were melted, their oxide dispersoids are lost via one or more of coarsening, dissolution, agglomeration into interdendritic ...

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Applied Surface Science - nuaa.edu.cn

sphere using a Pulverisette 6 planetary high-energy ball mill. The equivalent molar ratio of TiC and TiAl, which were expected to be formed during ball milling, was 1:1. Five different powder specimens were prepared using the milling conditions given in Table 1. 2.2. SLM processing As schematically illustrated in Fig. 1a, the self-developed SLM

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Characterization of TiAl-based alloy with high-content Nb by powder ...

Abstract Powders with nominal composition of Ti-45Al-10Nb (mole fraction, %) were prepared by mechanical ball milling and were then consolidated by hot-pressed sintering in vacuum atmosphere. The...

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Influence of milling parameters on the structural and phase formation ...

Jan 1, 2021The mixture was milled using the Simoloyer high energy ball mill (HEBM), using a high strength stainless steel jar in order to produce a mechanically alloyed Ti20Al alloy powder. The milling speed and milling time were varied as shown in Table 1 while ball-to- powder weight ratio (BPWR) was kept constant at 10:1.

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Microstructural Properties of Gamma Titanium Aluminide Manufactured by ...

In recent years, Electron Beam Melting (EBM) has matured as a technology for additive manufacturing of dense metal parts. The parts are built by additive consolidation of thin layers of metal powder using an electron beam. With EBM, it is possible to create parts with geometries too complex to be fabricated by other methods, e.g. fine network structures and internal cavities.

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Materials | Free Full-Text | Microstructure and Properties of a ...

To improve the graphene/copper interfacial bonding and the strength of the copper matrix, Cu-Cr-Mg alloy powder and graphene nanosheets (GNPs) have been used as raw materials in the preparation of a layered graphene/Cu-Cr-Mg composite through high-energy ball-milling and fast hot-pressing sintering. The microstructure of the composite after sintering, as well as the effect of graphene ...

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