
Powder material metastable

Metastable βPhase Ti–Nb Alloys Fabricated by Powder Metallurgy
2024年1月7日 This study investigates the effect of Nb concentration on the mechanical properties, superelasticity, as well as deformation behavior of metastable βphase Ti–Nb alloys produced via powder metallurgy The alloys were fabricated through mechanical alloying, 2021年2月15日 Shorttime processing route has been designed to manufacture costaffordable and highquality powder metallurgy (PM) metastable β titanium alloy, containing rapid powder Costaffordable and qualified powder metallurgy metastable beta 2024年8月5日 In this study, we regulated the laser powder bed fusion (LPBF) parameters to control ω phase density and β phase stability, thereby simultaneously triggering Laser powder bed fusion of metastable β titanium alloys: Enhanced The metastable materials produced include supersaturated solid solutions, intermediate phases, quasicrystalline phases, amorphous alloys, and highentropy alloys Additionally, nanocrystalline phases have been produced in Mechanical Alloying: A Novel Technique to Synthesize

Chapter 13 Powder consolidation ScienceDirect
1999年1月1日 The unique properties of metastable materials may be fully exploited, if powders are densified into bulk parts that retain the initial metastable features The key characteristic of 2022年3月4日 The materials preparation methods to synthesize metastable hydrogen storage alloys are firstly reviewed Afterwards, hydrogen storage properties of the metastable alloys Recent advances in metastable alloys for hydrogen storage: a review1 天前 The equilibriuminsoluble Cu and Fe metals with a composition of Cu 70 Fe 30 (at%) are mechanically milled for 20 h, resulting in a metastable singlephase facecentered cubic Mechanical Properties of Cu70Fe30 (at%) Bulk Metastable Alloys 2024年1月30日 The objective of this research was to comprehensively characterize the hot deformation and microstructure evolution of the metastable Ti5553 alloy prepared using the A Comprehensive Study on Hot Deformation Behavior of the

Metastable CrMnNi steels processed by laser powder bed fusion
2022年12月18日 In the present study, metastable CrMnNi steels with different nickel contents and, thus, different phase stabilities are manufactured by PBFLB/M Results clearly reveal 2019年11月20日 Our results demonstrate the synthesis of a bulk nanocrystalline metastable alloy with good microstructural stability at room temperature where such bulk solids are not yet reported for mechanicalSynthesis of a bulk nanostructured metastable Al alloy 2021年5月12日 The powder bed is the material domain of the metal powder particles from which new solid material layers are generated As mentioned above, Metastable βTialloys do not develop as high a strength as the near Beta Titanium Alloys Processed By Laser Powder Bed 2021年9月1日 In this paper, a new high entropy alloy is fabricated by selective laser melting (SLM) with the addition of Si powder into Fe50Mn30Co10Cr10 metastable high entropy alloy powders, with compositions Metastable high entropy alloys: An excellent defect tolerant material

In Situ Formation of a Metastable Powder Bed Fusion (LPBF) of
In Situ Formation of a Metastable Ti Alloy by Laser Powder Bed Fusion (LPBF) of Vanadium and Iron Modified Ti6Al4V the in situ alloyed material ranges from 336 7 HV05, in asbuilt condition, to 543 13 HV05 after powder was blended with commercially pure Fe and V powder (ratio: 9167 Ti6Al4V/2年8月5日 Although this material exhibits relatively higher yield strength through twinning/dislocation slip mechanisms, it exhibits a low strain hardening ability rate Therefore, the development of a metastable β titanium alloy with both high strength and plasticity remains a challenge, making it a current research hotspotLaser powder bed fusion of metastable β titanium alloys: 2019年8月25日 Hunan Provincial Key Laboratory of High Efficiency and Precision Machining of DifficulttoCut Material, Hunan University of Science and Technology, Xiangtan , China 3 Microstructure and Mechanical Property Evolution during Annealing of a ColdRolled Metastable Powder Metallurgy High Entropy Alloy Entropy, 21(9), 833 Microstructure and Mechanical Property Evolution during MDPI2021年1月9日 Shorttime processing route has been designed to manufacture costaffordable and highquality powder metallurgy (PM) metastable β titanium alloy, containing rapid powder consolidation (modified Costaffordable and qualified powder metallurgy metastable beta

Development and Characterization of a Metastable AlMnCe
2021年10月1日 Laser powder bed fusion (LPBF) can help to overcome two challenges occurring by casting of metastable Al alloys: (1) the high amount of casting defects and (2) the limited part size while 2024年11月1日 A laser powderbed fusion (LPBF) system GE concept laser M1 was used to fabricate the 316L stainless steel (SS) samples with a laser powder of 180 W, scanning speed of 800 mm/s, layer thickness of 45 μ m, and energy density of 333 J/mm 2 316L SS powder was obtained from Concept Laser GmbH with a particle size ranging from 10 to 45 μm (Table 1)Mechanical, tribological, and corrosion behavior of laser powder 2021年10月5日 Metastable alloys have lower SFE and thus are predisposed to strain accommodation via deformation mechanisms such as TRIP and TWIP Fatigue response of a metastable high entropy alloy made by LPBF was investigated The material showed excellent fatigue behavior with an endurance limit corresponding to σ a /σ y = 065Metastable high entropy alloys: An excellent defect tolerant material 2017年2月21日 Highenergy ball mills have been used to prepare energetic materials, including metastable alloys, reactive composites, and fine powders The three main mill types are shaker, planetary, and attritor mills, summarized briefly in Table 1A common feature for all types of mills is that the energy transferred from the milling tools to the powder being milled is sufficient to Mechanochemically prepared reactive and energetic materials:

Review on additive hybrid and multimaterialmanufacturing of
2021年8月7日 In this review paper, the authors investigate the state of technology for hybrid and multimaterial (MM) manufacturing of metals utilizing additive manufacturing, in particular powder bed fusion processes The study consists of three parts, covering the material combinations, the MM deposition devices, and the implications in the process chain The 2024年4月11日 Achieving facile grain microstructure control in metal additive manufacturing is essential for its advancement Here, the authors present a powdersizedriven melt pool engineering approach Powdersize driven facile microstructure control in powderfusion Metastable materials offer a broad and novel platform for the development of nextgeneration science and technology Phase engineering including synthesis of materials with unconventional phases and phase transition of metastable materials has been explored in layered materials but has not tackled their anisotropy issue yet The high anisotropy in layered materials further Realizing nearly isotropic thermoelectric properties in 2Dlayered 2024年1月30日 Request PDF A Comprehensive Study on Hot Deformation Behavior of the Metastable β Titanium Alloy Prepared by Blended Elemental Powder Metallurgy Approach The hot deformation behavior of a Ti A Comprehensive Study on Hot Deformation Behavior of the Metastable

Evolution of the Microstructure of Laser Powder Bed Fusion
2021年10月4日 No β phase is present in the powder bed material initially The first evidence of the β110 peak, the strongest β phase peak, in the diffraction patterns from the powder bed material appears between 913 K (640 °C) and 923 K (650 °C) during heating but is not quantifiable until it reaches a volume fraction of ~002 at roughly 950K (677 °C)2024年7月11日 Exchanging the organic ligand 1octanethiol by iodide enabled to investigate the unusual strong stability of this metastable material through simultaneous thermal analysis combining differential scanning calorimetry and thermogravimetric analysis Additionally, in situ high temperature powder xray diffraction (pXRD) shows a 3D Confinement Stabilizes the Metastable Wiley Online Library1999年2月1日 Superplasticity in a powder metallurgy (P/M) TiAl alloy (Ti–47Al–2Cr–1Nb–1Ta) with a metastable B2 phase coexisted with a finegrained γ+α2 duplex structure has been studiedSuperplastic behavior of a powder metallurgy TiAl alloy with a 2022年12月18日 The complex thermal history imposed by the laserbased powder bed fusion of metals (PBFLB/M) process is known to promote the evolution of unique microstructures In the present study, metastable Metastable CrMnNi steels processed by laser powder bed fusion

On the formation of spherical metastable BCC single crystal
2020年3月1日 All of the spatter particles collected and analyzed in this work were produced during the Laser powder bed fusion (LPBF) of stainless steel 316 L metal powder using a Renishaw Ⓡ AM250 additive manufacturing machine The 316 L powder was purchased from Renishaw Ⓡ and the composition of the powder was The hardness of the in situ alloyed material ranges from 336 ± 7 HV05, in asbuilt condition, to 543 ± 13 HV05 after precipitationhardening and Michael Schmidt 2018 "In Situ Formation of a Metastable βTi Alloy by Laser Powder Bed Fusion (LPBF) of Vanadium and Iron Modified Ti6Al4V" Metals 8, no 12: 1067 https In Situ Formation of a Metastable βTi Alloy by Laser Powder Bed 2021年12月1日 Laser powder bed fusion (LPBF) can help to overcome two challenges occurring by casting of metastable Al alloys: (1) the high amount of casting defects and (2) the limited part size while maintaining rapid solidification of the whole crosssection In this study, an Al 92 Mn 6 Ce 2 alloy was processed crackfree without baseplate heating by LPBFDevelopment and characterization of a metastable AlMnCe of the metastable fcc phase Al 20 Mn 2Ce instead of quasicrystals [16–20] Germany) The powder material was sieved to obtain a particle size range of 10 to 63 μm and analyzed viaAdditive Manufacturing Letters ResearchGate

ACS Sustainable Chemistry Engineering
2019年8月5日 The scientific issues of the instable decomposition and manufacturing size limitation of zirconium tungstate ceramic (ZrW2O8) fabricated by the conventional hightemperature sintering process (usually T ≥ 1105 °C) 2022年5月25日 Heat Treatments of Metastable β Titanium Alloy Ti24Nb4Zr8Sn Processed by Laser Powder Bed Fusion May promising properties regarding the material behavior and the opportunity to tailor Heat Treatments of Metastable β Titanium Alloy Ti24Nb4Zr8Sn 2014年2月15日 There has been considerable interest in Alrich Al–Mn–Ce alloys due to the variety of crystalline and quasicrystalline metastable phases that can be formed Here we report a study of the effects of heat treatment on an Al–5Mn–2Ce (at%) alloy processed by gas atomization and consolidated by warm extrusion Characterization using Xray diffraction and Phase stability in a powderprocessed Al–Mn–Ce alloy2013年12月23日 121 The Principles In this book, and particularly in this chapter, we are going to consider singlecrystal and powder Xray crystallography as our primary methods for watching chemistry happenAs you will probably be aware, there are certain restrictions if we want to use singlecrystal crystallography, that is, we must use singlecrystals that give a discrete Single Crystal and Powder Methods for Structure Determination

Metastable bphase of benzophenone: independent
determinations of the metastable form (mp 297–299 K) Crystalline material of the metastable polymorph was obtained from a melt supercooled to ˘243 K The structure was determined from Xray powder diffraction data by employing a novel, computational systematic search procedure to identify trial packing arrangements for subsequent Mechanical alloying is a solidstate powder processing technique that involves repeated cold welding, it is now recognized as an important technique to synthesize metastable and advanced materials with a high potential for widespread applications An ideal and most useful material should have an excellent combination of propertiesMechanical Alloying: A Novel Technique to Synthesize Research2024年6月19日 The energy density applied during processing was sufficiently high to melt the prealloyed powder matrix, but too low to melt the Taparticles within the powder material entirely Unmelted refractory particles are frequently observed in additive manufacturing of elemental powder blends, especially when the energy input was too low [ Citation 68–71 , Citation 73 , Full article: Electron beam powder bed fusion of Ti30Ta high Laser powder bed fusion (LPBF) has unlocked new opportunities for designing novel structures through its “bottomup” fabrication strategy, which utilizes pointbypoint, linebyline, and layerbylayer scanning manner [1], [2]Additionally, the rapid melting and nonequilibrium solidification induced by the laser heat source during LPBF lead to the formation of metastable Manipulating microstructure and mechanical property during laser powder

The Powder Diffraction File: a quality materials
2019年11月6日 The Powder Diffraction File (PDF) is a database produced and maintained by the International Centre for Diffraction Data (ICDD ®), a nonprofit scientific organization committed to meeting the needs of the scientific The investigated material is the metastable b titanium alloy with a nominal chemical composition of Ti–5Al–5Mo–5V–3Cr (m pct, Ti5553) It was obtained using the Blended Elemental Powder Metallurgy (BEPM) method The starting materials used in the mixing process were previously described in detail in References 17, 18A Comprehensive Study on Hot Deformation Behavior of the Metastable 2017年9月1日 During test series, metastable beta titanium alloy Ti5553 was processed by SLM procedure The used titanium powder was produced by plasma atomisation After atomisation, particles showing a spherical shape and a defined range of grain fractions (Fig 1) The powder exhibits sufficient flowability and packing propertiesProcessing of a metastable titanium alloy (Ti5553) by selective 2024年4月30日 These metastable structures possess a clear segregation 316L stainless steel is a material of choice for a broad Gas atomized 316L stainless steel powder with diameter in the 45 Metastable cellular structures govern localized corrosion damage

Recent advances in metastable alloys for hydrogen storage: a
2022年3月4日 21 Highenergy ball milling Highenergy ball milling is one of the most efficient and commonly used techniques to prepare metastable hydrogen storage alloys [], such as nanocrystalline alloys, amorphous alloys and highentropy alloysParticularly, the powder materials can be easily prepared by highenergy ball milling with very well controlled chemical 2021年8月13日 AMS4998E Aerospace Material Specification, Titanium Alloy Powder 6Al4V SAE International, Warrendale, PA, USA, 2017, [6] Burgers, W G On the process of transition of the cubicbodycentered modification into the hexagonalclosepacked modification of zirconium Physica 1, 561586 (1934) doi: 101016/S00318914(34)802443Review of laser powder bed fusion (LPBF) fabricated Ti6Al4V: 2024年9月1日 The toughening mechanism of metastable austenite is heavily influenced by its mechanical stability For mechanically stable austenite, it remains untransformed until the crack tip reaches it, serving as a soft phase that hinders crack propagation [25, 26]In contrast, less stable austenite undergoes DIMT before crack initiation, which can affect the toughness On the role of chemically heterogeneous austenite in cryogenic 2020年5月6日 Metastable intermolecular composites (MICs) are mixtures of nanosized metal oxide/metal that are stable under normal conditions Whereas heat output of typical CHNObased energetic system is limited to stored chemical energy; MICs can offer vigorous exothermic reactions with substantial heat output Ferric oxide is the most common oxidizer for MIC Novel High Energy Density Material Based on Metastable

Metastable high entropy alloys: An excellent defect tolerant material
2021年10月5日 Hence, a damagetolerant material design approach can be used to reduce the deleterious effect of processing defects on fatigue life (SLM) with the addition of Si powder into Fe50Mn30Co10Cr10 metastable high entropy alloy powders, with compositions (Fe50Mn30Co10Cr10) 100x Si x (x = 0, 1, 3, 5)2021年11月24日 Powder XRD analysis was performed using a Bruker D8 Discover diffractometer with CuKα radiation generated at 40 kV and 40 mA study show that amino acids with polar side chains have the greatest inhibitory effect on the growth of DCPD on seed material from metastable solutionsControlled synthesis of dicalcium phosphate dihydrate (DCPD)