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Ultrastrong low-density steel with large ductility that

Nature Brittle intermetallic compound makes ultrastrong low-density steel with large ductility Although steel has been the workhorse of the automotive industry since the 1920s,the share by weight of steel and iron in an average light vehicle is now gradually decreasing,from 68.1 per cent in 1995 to 60.1 per cent in 2011.Ultrastrong lightweight compositionally complex steels via High-performance lightweight materials are urgently needed,given the pressing quest for weight reduction and the associated energy savings and emission reduction.Here,by incorporating the multiprincipal element feature of compositionally complex alloys,we develop the concept of lightweight steels further and propose a new class of compositionally complex steels (CCSs).US5215605A - Niobium-aluminum-titanium intermetallic Intermetallic compounds or alloys comprising niobium with and from 10 to 28 atomic percent titanium and from 14 to 17.5 atomic percent aluminum characterized by very high temperature melting points,high compressive strength at room temperature,higher room temperature compressive strength after annealing,machineable with conventional tooling,a B2 crystal structure in the as-cast condition

Structural and Mechanical Behaviour of Al-Fe

Aug 17,2017 PDF Brittle intermetallic compound makes ultrastrong low#0183;The brittle nature of most intermetallics requires powder metallurgical processing route.Amorphization of intermetallic compounds by mechanical alloying (MA) was first reported by Ermakov et al.[5,6] in Y-Co and Gd-Co systems.Amorphous phases from elemental powder mixtures or powders of intermetallics synthesized by high-energy ball milling Some results are removed in response to a notice of local law requirement.For more information,please see here.Previous123456NextSome results are removed in response to a notice of local law requirement.For more information,please see here.12345NextThe Influence of Grain Structure on Intermetallica brittle intermetallic compound (IMC) reaction layer between the two metals at the joint interface,which reduces their maximum strength but,more importantly,leads to low energy absorption during failure.[4,5] In order to investigate the growth behavior of the IMC layers and quantify the reaction kinetics,there have been

Properties Of Intermetallic Compounds

Download Properties Of Intermetallic Compounds pdf.Download Properties Of Intermetallic Compounds doc.Secondary production of skilled staff communication,series of publishers.Rupture strength and take on the previously incised or loads from recycled wrought product,series of iran.POSTECH researchers develop new high-strength,Feb 27,2015 PDF Brittle intermetallic compound makes ultrastrong low#0183;Sang-Heon Kim,Hansoo Kim Nack J.Kim (2015) Brittle intermetallic compound makes ultrastrong low-density steel with large ductility Nature 518,7779 doi 10.1038/nature14144 Posted on 27 February 2015 in Materials ,Weight reduction Permalink Comments (1)Orbital Aspirations New Alloy Strong as Steel,light as Recently,high-aluminium low-density steels have been actively studied as a means of increasing the specific strength of an alloy by reducing its density3,4,5.But with increasing aluminium content a problem is encountered brittle intermetallic compounds can form in

Orbital Aspirations February 2015

Recently,high-aluminium low-density steels have been actively studied as a means of increasing the specific strength of an alloy by reducing its density3,4,5.But with increasing aluminium content a problem is encountered brittle intermetallic compounds can form inNew process allows for stronger,lighter,flexible steelMore information Brittle intermetallic compound makes ultrastrong low-density steel with large ductility,Nature 518,7779 (05 February 2015) DOI 10.1038/nature14144 Abstract Although steel New process allows for stronger,lighter,flexible steelMore information Brittle intermetallic compound makes ultrastrong low-density steel with large ductility,Nature 518,7779 (05 February 2015) brittle intermetallic compounds can form in

Nature Brittle intermetallic compound makes ultrastrong

Nature Brittle intermetallic compound makes ultrastrong low-density steel with large ductility Although steel has been the workhorse of the automotive industry since the 1920s,the share by weight of steel and iron in an average light vehicle is now gradually decreasing,from 68.1 per cent in 1995 to 60.1 per cent in 2011.Multi-Doping Effect on Ductility of TiAl 3 A DFT Study S.H.Kim,H.Kim,N.J.Kim,Brittle intermetallic compound makes ultrastrong low-density steel with large ductility.Nature 518 (7537),7779 (2015) CAS Article Google Scholar 14.Morphology of Intermetallic Compounds in Al-Si-Fetemperature of intermetallic compounds and investigated the compounds formed in Al-Si-Fe alloys.At the same time,the morphological changes of these intermetallic compounds were investigated through the application of ultrasonic vibration.2.Experimental 2.1 Preparation of Al-Si-Fe master alloy To obtain an Al-Si alloy with high iron content

Metallurgical Materials Science and Alloy Design - Nanosteels

Such low lattice misfit (0.03 PDF Brittle intermetallic compound makes ultrastrong low#177; 0.04 per cent) decreases the nucleation barrier for precipitation,thus enabling and stabilizing nanoprecipitates with an extremely high number density (more than 10^24 per cubic metre) and small size (about 2.7 PDF Brittle intermetallic compound makes ultrastrong low#177; 0.2 nanometres).Metallurgical Materials Science and Alloy Design - High Higher strength values require larger volume fractions of B2 particles,yet only at a significant expense of ductility,due to the intrinsically brittle nature of the B2 intermetallic compound.Mechanical properties of the high entropy nano-steel (Wang et al.,Sci.Adv.2020; 6 eaba9543).Materials Free Full-Text Effect of Reactive SPS on the As part of the tests,a two-phase NiAl/Ni3Al alloy and a composite based on this alloy with 4 vol% addition of TiB2 were produced by the reactive FAST/SPS (Field Assisted Sintering Technology/Spark Plasma Sintering) sintering method.The sintering process was carried out at 1273 K for 30 s under an argon atmosphere.The effect of reactive SPS on the density,microstructure,and mechanical and

Making polymer fibers strong and tough simultaneously

2.Kim SH,Kim H,Kim NJ.Brittle intermetallic compound makes ultrastrong low-density steel with large ductility.Nature,2015,518 7779.CAS Article Google ScholarIntragranular brittle precipitates improve strain Feb 21,2020 PDF Brittle intermetallic compound makes ultrastrong low#0183;Brittle intermetallic compound makes ultrastrong low-density steel with large ductility Nature ,518 ( 2015 ) ,pp.77 - 79 View Record in Scopus Google ScholarIntermetallics Formation and Their Effect on Mechanical May 22,2017 PDF Brittle intermetallic compound makes ultrastrong low#0183;This study focuses on primary impurities,called intermetallics,in the microstructure of Al-Si-X alloys,their formation,effects and treatments to eliminate or ameliorate their deleterious effects.Intermetallic compounds are usually formed when alloying elements,such as Fe,Cu,Mn,Mg and Sr.are added to Al-Si based alloys.These elements are depicted by X in the alloys formation expression.

Intermetallics Formation and Their Effect on Mechanical

May 22,2017 PDF Brittle intermetallic compound makes ultrastrong low#0183;This study focuses on primary impurities,called intermetallics,in the microstructure of Al-Si-X alloys,their formation,effects and treatments to eliminate or ameliorate their deleterious effects.Intermetallic compounds are usually formed when alloying elements,such as Fe,Cu,Mn,Mg and Sr.are added to Al-Si based alloys.These elements are depicted by X in the alloys formation expression.Intermetallic Compounds for High-Temperature Structural Intermetallic compounds with high melting temperatures have the promise of higher strength and elastic stiffness while hot,but in most cases they suffer from extreme brittleness at room temperature.An extensive experimental search of intermetallics has identified four binary compositions that are tough at ambient temperature; and,curiously INTERMETALLICS - SlideShareOct 23,2013 PDF Brittle intermetallic compound makes ultrastrong low#0183;METALLIC MATERIALS - INTERMETALLICS INTRODUCTION Intermediate Phases An intermetallic compound contains two or more metallic elements,producing a new phase with its own composition,crystal structure,and properties.Intermetallic compounds are almost always very hard and brittle.Intermetallics or intermetallic compounds are similar to

INTERMETALLIC ALLOYS BASED ON Ni-Al PRODUCED

structures among high-temperature intermetallic compounds are listed in Table 3 [6-8].Intermetallics have recently received considerable attention as potential structural materials for many engineering applications.They have a number of properties,which make themGrowth dynamics of faceted Al13Fe4 intermetallic revealed Brittle intermetallic compound makes ultrastrong low-density steel with large ductility Nature ,518 ( 2015 ) ,pp.77 - 79 ,10.1038/nature14144 View Record in Scopus Google ScholarEutectic Systems A eutectic system contains two solid phases at low temperature.These phases This intermetallic compound is metastable at room T.It decomposes (very slowly,within several years)into -Fe and C (graphite) at 650 - 700 PDF Brittle intermetallic compound makes ultrastrong low#176;C C is hard and brittle:

Employing nickel for a major breakthrough in steel alloys

Brittle intermetallic compound makes ultrastrong low-density steel with large ductility is a paper by Sang-Heon Kim,Hansoo Kim and Nack J.Kim,published in Nature.They are from the Graduate Institute of Ferrous Technology,POSTECH,South Korea and note that although steel has been the workhorse of the automotive industry since the 1920s,the share by weight of steel and iron in anEffects of the Mn/Fe Ratio and Cooling Rate on the Longer growth time will make the size of the PDF Brittle intermetallic compound makes ultrastrong low#162; type compound much larger.3.2 Effect of the Mn/Fe ratio The addition of Mn modied the platelet PDF Brittle intermetallic compound makes ultrastrong low#162; type Fe compound to PDF Brittle intermetallic compound makes ultrastrong low#161; type Fe compound which appeared as both Chinese script and polyhedral shape,as shown in Fig.5.In the alloy with both low Fe content and low Mn/Fe ratio,theEffects of Cu/Al intermetallic compound (IMC) on copper 3) Third,slower intermetallic compound (IMC) growth between copper wires and aluminum pads results in lower contact resistance and better reliability in com-parison to gold wires and aluminum pads.Applying copper wire bonding to copper pads on high-speed chip is ideal to make electrically and mechanically stable mono-metallic bonding interface.

Effects Of Magnesium Oxide (MgO) On The Structure

aluminium matrix) and the intermetallic compound (Al 2 Cu precipitates).The intermetallic compound existed in the form of coarse brittle precipitate from the -solid solution by the grain boundaries.Plate 2.Al-4%Cu - 0.75%wtMgO (100) Plate 3.Al-4%Cu - 1%wtMgO (100) Plate 4.Al-4%Cu - 1.25%wtMgO (100) A B B A A B BEffect of Vacuum on High-Temperature Degradation of(HBr),water,carbon oxides,and other molecules with low molecular weight,which can react with the Al/Au intermetallics causing dry corrosion of the bond [5,6,7].Uno and Tatsumi [7] have shown recently that the corrosion of intermetallic compounds is specific to the Au4Al phase and does not occur on Au2Al and Au5Al2 compositions.Dual-nanoprecipitation leading to ultrastrong lightweight Although other lightweight materials,e.g.,Al-alloys,Mg-alloys,and carbon fiber composites,are available or under development,the unique combination of absolute strength,specific strength,ductility,toughness,and cost-effectiveness makes advanced lightweight Fe-based steels particularly attractive for future key engineering applications.

Dissimilar Welding of Titanium Alloys to Steels

One solution is to join titanium alloys to low-priced conventional steels by which the usage of titanium alloys can be reduced.The major metallurgical problem of joining titanium alloys with steels consists in formation of brittle intermetallic phases,FeTi and Fe 2Ti,as shown in Fig.1 [1],which makeDissimilar Metal Joining between Aluminum Alloy andto make,because conventional welding causes brittle intermetallic compounds (IMC) to form in the joint or deposit,making the joint brittle and weak.Thus,joining between steel and aluminum has relied on mechanical fasteners and adhesive joining.Kobe Steel and Nissin Steel have developed a hot-dip aluminized steel sheet which is joinable toControlling intermetallic compounds formation duringIntermetallic compounds NiTi shape memory alloys Stainless steel Dissimilar joining Synchrotron X-ray diffraction ABSTRACT Dissimilar laser welding of NiTi to stainless steel is of great importance in designing medical devices but the formation of hard and brittle intermetallic compound results in low

Cited by 396Publish Year 2015Author Sang-Heon Kim,Hansoo Kim,Nack J.KimBrittle intermetallic compound makes ultrastrong low

based,high-aluminium,low-density steel has been the suppression of brittle intermetallic compound formation by stabilizing the ductile austenite matrix 3,6-8 .Instead,here we haveCited by 396Publish Year 2015Author Sang-Heon Kim,Hansoo Kim,Nack J.KimBrittle intermetallic compound makes ultrastrong low Feb 04,2015 PDF Brittle intermetallic compound makes ultrastrong low#0183;Brittle intermetallic compound makes ultrastrong low-density steel with large ductility Brittle intermetallic compound makes ultrastrong low-density steel with large ductility Kim,Sang-Heon; Kim,Nack J.; Kim,Hansoo 2015-02-04 00:00:00 Although steel has been the workhorse of the automotive industry since the 1920s,the share by weight of steel and iron in an average light vehicleCited by 396Publish Year 2015Author Sang-Heon Kim,Hansoo Kim,Nack J.KimBrittle intermetallic compound makes ultrastrong low But with increasing aluminium content a problem is encountered brittle intermetallic compounds can form in the resulting alloys,leading to poor ductility.Here we show that an FeAl-type brittle but hard intermetallic compound (B2) can be effectively used as a strengthening second phase in high-aluminium low-density steel,while alleviating

Brittle intermetallic compound makes ultrastrong low

Feb 04,2015 PDF Brittle intermetallic compound makes ultrastrong low#0183;Here we show that an FeAl-type brittle but hard intermetallic compound (B2) can be effectively used as a strengthening second phase in high-aluminium low-density steel,while alleviating its Brittle intermetallic compound makes ultrastrong low Feb 01,2015 PDF Brittle intermetallic compound makes ultrastrong low#0183;Recently,high-aluminium low-density steels have been actively studied as a means of increasing the specific strength of an alloy by reducing its density.But with increasing aluminium content a problem is encountered brittle intermetallic compounds can formBrittle intermetallic compound makes ultrastrong low Download PDF Sorry,we are unable to provide the full text but you may find it at the following location(s) nature/articles (external link)

Author Sang-Heon Kim,Hansoo Kim and Nack J.KimMulticomponent intermetallic nanoparticles and superb

PDF Brittle intermetallic compound makes ultrastrong low#0183;,Brittle intermetallic compound makes ultrastrong low-density steel with large ductility.Nature 518 ,77 79 ( 2015 ).doi 10.1038/nature14144 pmidAlternatives to Cross-Sectional Sample Preparation for a distinct Cu-Sn intermetallic layer,and it appears uniform,so soldering did occur (this is not a non-wet).From the phase diagram,the first compound that forms between Sn and Cu is Cu 3Sn,a very brittle intermetallic that tends to form at the Cu surface [10].The equilibrium compound,Cu(PDF) Friction welding of steel to ceramic Koen Faes Aluminium sheet is a commonly used interlayer.x Attention is needed to control the creation of a brittle intermetallic compound layer that grows in the aluminium-steel weld interface in proportion to the friction time.In order to create a bond with maximum strength,these two phenomena will need to be optimized.Once the new friction welding

(PDF) FINITE ELEMENT MODELING AND EXPERIMENTAL

Brittle fracture at the intermetallic cannot occur or even Even though graphically there seems to be a difference in be initiated at low shear rates.At low shear rates,the the shear forces,a 2-sample t-test was performed to determine failure site will primarily be the solder matrix.if the difference observed was statistically significant.(PDF) Brittle intermetallic compound makes ultrastrong low As the annealing time was extended to 1 min and 2 min,the average precipitate size increased slightly to 3.7 nm and 4.5 nm,and the number density decreased to 8.8 PDF Brittle intermetallic compound makes ultrastrong low#215; 10 23 m 3 and 6.1 PDF Brittle intermetallic compound makes ultrastrong low#215; 10 A new class of lightweight,stainless steels with Here,we report a leap forward toward this aim through the development of a new family of low-density stainless steels with ultra-high strength ( PDF Brittle intermetallic compound makes ultrastrong lowgt; 1 GPa) and high ductility ( PDF Brittle intermetallic compound makes ultrastrong lowgt; 35%).The alloys are based on the Fe(2030)Mn(11.512.0)Al1.5C5Cr (wt%) system and are strengthened by dispersions of nano-sized Fe3AlC-type -carbide.

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