61 Result(s)
within
English
Materials Science
Engineering Fluid Dynamics
Mechanical Engineering
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Chapter and Conference Paper
Influence of the Polarity on the Cleanliness Level and the Inclusion Types in the ESR Process
This paper describes the effect of different electrical power modes on the cleanliness level and the inclusion types in the ESR material X38CrMoV5–1. Therefore selected ingots, which were remelted in an open l...
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Chapter and Conference Paper
The Behaviour of Entrainment Defects in Aluminium Alloy Castings
The results of experiments are reported in which air bubbles were held for varying lengths of time in melts of three different Al alloys, (commercially pure Al, Al-7Si-0.3Mg, (2L99), and Al-5Mg alloy), with th...
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Chapter and Conference Paper
The Influence of Different Melting and Remelting Routes on the Cleanliness of High Alloyed Steels
The cleanliness of steel has an essential impact on many properties like corrosion resistance or toughness. Beside the deoxidation treatment, remelting or even multiple remelting strongly influences the cleanl...
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Chapter and Conference Paper
Design of ESR Slags According to Requested Physical Properties; Part 2: Density and Viscosity
Density and viscosity components of multifunction Γ(T,ρ,η,к) which for requested working temperature (T), density (ρ), viscosity (η) and electrical conductivity (к) defines all six-component (CaF2, CaO, MgO, AI2O
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Chapter and Conference Paper
Characterization of Bifilms and Oxide Inclusions in Investment Cast IN100
Oxide bifilms are a proposed casting inclusion reported to have been observed in vacuum investment cast polycrystalline Ni-base superalloys. Ongoing research seeks to determine if current superalloy casting pr...
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Chapter and Conference Paper
Operational Experience of Large Sized ESR Plants and Attainable Quality of ESR Ingots with a Diameter of up to 2600mm
In the last years the field of remelting was mainly characterized by the commissioning of large sized ESR plants for the production of ESR ingots with a diameter up to 2.600 mm and weights up to 250 tons. Thes...
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Chapter and Conference Paper
Controlling liquid pool depth in VAR of a 21.6 cm diameter ingot of Alloy 718
It is believed that the final microstructure in vacuum arc remelted (VAR) ingots is strongly influenced by the molten metal pool profile. Thus, if the pool profile was properly controlled during the melt then ...
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Chapter and Conference Paper
Review of Hot Tearing Studies in Al Alloys during Direct Chill Casting
DC casting is a well established casting method for producing aluminum and magnesium alloys. One of the major defects frequently encountered in DC casting ingots is hot tearing which originates during the phas...
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Chapter
Brief Review on Integrated Planar Waveguide-Based Optical Sensor
Planar optical waveguides are the input devices to build an integrated optical sensor. This chapter provides review made in the recent advancement of integrated optical sensor that involves guided light with s...
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Chapter and Conference Paper
Solidification Map** of a Nickel Alloy 718 Laboratory VAR Ingot
The solidification microstructure of a laboratory-scale Nickel alloy 718 vacuum arc remelted (VAR) ingot was analyzed. The cylindrical, 210-mm-diameter ingot was sectioned along a plane bisecting it length-wis...
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Chapter and Conference Paper
Liquid Metal Engineering by Application of Intensive Melt Shearing
In all casting processes, liquid metal treatment is an essential step in order to produce high quality cast products. A new liquid metal treatment technology has been developed which comprises of a rotor/stato...
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Chapter
Theoretical Modeling, Design, and Development of Integrated Planar Waveguide Optical Sensor
Planar waveguide optical sensor development has principally been driven by the need for rapid, automated devices for application in the fields of clinical diagnostics and biological detection. This chapter is ...
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Chapter and Conference Paper
Development of a Hot Working Steel Based on a Controlled Gas-Metal-Reaction
As a result of cost sensitiveness, the demand on hot working steels with advanced characteristics and properties are ascending. We have used a controlled gas-metal-reaction in a P-ESR furnace to produce high q...
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Chapter
Optical Waveguide Sensor as Detection Element for Lab on a Chip Sensing Application
The assessment of accurate glucose level is an important aspect in the field of clinical diagnostics. With ever-improving advances in diagnostic technology, we find that new techniques and approaches have been...
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Chapter and Conference Paper
Impact of the Solidified Slag Skin on the Current Distribution During Electroslag Remelting
The ESR process is commonly used to produce defect-free ingots of high added value alloys such as special steels or Ni-based superalloys. Numerous simulation tools have been developed for the last 30 years to ...
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Chapter and Conference Paper
Characterisation and Modelling of Microsegregation in Low Carbon Continuously Cast Steel Slab
Segregation during casting of microalloyed steels can affect subsequent processing and final properties. In optimising composition – processing combinations an accurate prediction of the composition and distri...
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Chapter and Conference Paper
Characterization of the Interfacial Reaction between Titanium Castings and Alumina Mold Containing the Alpha-Case Compounds
The interfacial reactions of titanium with investment molds containing alpha-case compound systems were studied. Especially, the alumina molds that are containing titania which is one of the alpha-case compoun...
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Chapter and Conference Paper
Contribution of the Mould Current to the Ingot Surface Quality in the Electroslag Remelting Process
Thickness, uniformity and mechanical properties of slag skin are main factors controlling the surface quality of the electroslag remelting (ESR) ingot. Thin and homogeneous slag skin is a key to obtain a nice ...
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Chapter and Conference Paper
A Two-Dimensional Infiltration Dynamics Model of C-SiC Composites
This article presents the mathematical modeling of Si infiltration material in a porous carbon fiber preforms. Capillary infiltration kinetics in the limit of both interface and diffusion control for situation...
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Chapter and Conference Paper
Phosphorus Partitioning during EAF Refining of DRI Based Steel
Flexibility in raw material has prompted interest in better control of phosphorus (P) in molten steel. While significant work has been done on the partition of phosphorus to slags with chemistries relevant to ...
