... contact automotive wheel ball bearings is introduced. Air-melt steelmaking, casting and rolling and remelt steelmaking such as vacuum induction melting, electroslag remelting and vacuum arc remelting are reviewed for special requirements such as precision aerospace. Clean-steel powder metallurgy...

... Powder metallurgy was in the past synonymous with sintered and forged component production for nondemanding rolling bearing applications. State-of-the-art powder metallurgy (PM) in combination with hot isostatic pressing (HIP) is capable of producing steel qualities suitable for demanding...

... performance with an additional 4°C of cooling compared to traditionally manufactured cold plates. additive manufacturing thermal management copper stereolithography powder metallurgy PROGRESS IN ADDITIVE MANUFACTURING 2020 131 STP 1637, 2022 / available online at www.astm.org / doi: 10.1520...

... High-hardness, high-carbide powder metallurgy tool steels such as M62 enable the use of ball bearings at extremely high load and stress levels increasing the potential for rolling contact fatigue failure attributed to nonmetallic inclusions. Ever-cleaner steels are sought, but the results have...

... the fatigue life and reliability. The research on high-performance material is a good opportunity to promote the introduction of powder metallurgy steel. Powder metallurgy for bearing steel manufacturing was introduced several decades ago, but the effective use in aerospace engines is still very limited...

... The fatigue lives of modern powder metallurgy disk alloys are influenced by variabilities in alloy microstructure and mechanical properties. These properties can vary as functions of variables the different steps of materials/component processing: powder atomization, consolidation, extrusion...

... This study analysed the possibility of producing biocompatible, porous functionally graded metallic acetabular cups using powder metallurgy techniques, where a porous surface provided a substrate for incorporating a polymeric compliant layer which was supported by a rigid inner core. Two...

... of the extruded materials through powder metallurgy (P/M) route were extremely fine as compared to ingot metallurgy (I/M) materials. Nonmetallic inclusions were finely dispersed and the materials were rated to have good cleanliness per ASTM E 45-85 (Method A), Practice for Determining the Inclusion Content...

... solidification powder metallurgy metallurgical specimens microstructure metallographic techniques Kevin L. Zetk, ) Iver E. Anderson, 2 Donald A. KOSS, 3 and Paul R. HowelP Microstructural Investigationsof Rapidly Solidified Copper-Niobium (Cu-Nb) Alloy Powders Produced by Inert Gas Atomization REFERENCE...

... size, and in determining the mix ratio of silicon carbide (SiC) reinforcement particles in aluminum matrix alloy powders. Ultrasonic techniques were capable of identifying SiC clusters in large-scale, consolidated powder metallurgy (P/M) metal-matrix composite (MMC) billets, while eddy-current methods...

... in T-15, since it is one of the most highly alloyed of the high speed steels. T-15 is therefore a prime candidate for powder metallurgy techniques, because the fine, uniformly distributed carbides provided by the process greatly improve workability and grindability with no sacrifice in hot hardness...

... Engineering properties of the aluminum powder metallurgy (PM) alloy 7091-T7E69 and the ingot metallurgy (IM) alloys 7075-T73, 7175-T736, 7010-T736, and 7050-T736 were compared. The properties considered were strength, fracture toughness, fatigue strength, fatigue crack propagation resistance...

... Two rapidly solidified powder metallurgy (PM) aluminum alloys, Al-7.4Fe-3.4Ce and Al-5.7Fe-6.1Ni, were investigated to characterize the annealing response and to relate room-temperature tensile properties with the forging reduction (up to 65%), starting from vacuum-hot-pressed material. The Al...

...-0.2Zr are promising substitutes for commercial 2XXX and 7XXX aluminum alloys, respectively, at 10 to 11% lower density levels. aluminum alloys powder metallurgy rapid solidification processing aluminum microstructure mechanical properties alloying effects heat treating Peter J. Meschter...

... The advantages of rapid solidification processing over ingot metallurgy processing in the development of 2XXX aluminum alloy compositions were evaluated using a similarly processed ingot metallurgy (IM) control alloy. The powder metallurgy (PM) alloy extrusions showed a reduced age-hardening...

... RST aluminum alloys are envisioned for each of the three primary groups of aerospace vehicles: aircraft, missiles, and space vehicles. Each of these groups has a different general set of material property and cost objectives. The current powder metallurgy (PM) aluminum alloy development efforts...

... on the ingot metallurgy aluminum alloys currently used in land vehicle applications. rapid solidification technology aluminum alloys land vehicles automobiles powder metallurgy Jeffrey Waldman^ Use of Rapidly Solidified Aluminum Alloys in Land Vehicles REFERENCE: Waldman, J., "Use of Rapidly...

..., is simply a multiple of the dendrite tip radius, which, in turn, depends on the local cooling rate and on certain groupings of the thermophysical constants. aluminum alloys powder metallurgy solidification dendrites cooling rate cast microstructures supercooling interfaces segregation...

... the evolution of the microstructural state during processing. These principles are illustrated with applications to evolving porous structures. aluminum alloys powder metallurgy stereology microstructural evolution Robert T. DeHoff Stereological Characterization of Porous Microstructures REFERENCE...

.... Fracture surfaces of these fabricated materials are described, as well as the effect of microvoids on fracture. aluminum alloys powder metallurgy rapid solidification dispersion hardening transition elements intermetallic phases melt-spun ribbon cooling rate undercooling Zone A Zone B...