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Showing 1 to 20 of 26 for “"Steel alloys"”.
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Thermal imaging of quenched microstructural evolution in steel alloys
A method was devised for quenching undercooled samples of Fe-12Cr-16Ni. The samples were levitated in a magnetic field as a way of containerless processing. They were dropped onto a nucleation trigger and then into a quenching bath. This process was successful in producing quenched samples , but …
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Empirical Multiphase Model for Strength Evolution of High-Chromium Steel Alloys
Duplex stainless steel 2205 (DSS2205) exhibits complex non-monotonic strength evolution during thermal ageing at elevated temperatures, limiting predictive capability for long-term component life assessment. This dissertation develops and validates the METALS (Microstructure Evolution and Thermal …
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The kinetics of growth competition during rapid solidification of ternary steel alloys
… growth behavior of ternary stainless steel alloys was examined using electromagnetic levitation and high-speed digital imaging, and the growth behavior of the stable fee austenite (gamma) phase into the pre-existing metastable bee ferrite [delta] solid/liquid dendrite array was …
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The influence of cooling rate on the microstructure of stainless steel alloys
Thesis (Sc. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1988.
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Physically based multiscale-viscoplastic model for metals and steel alloys: theory and computation
… desirable goals for material like metals and steel alloys involves a comprehensive study of their microstructures and experimental observations under different loading conditions. In general, metal structures display a strong rate- and temperature-dependence when deformed non-uniformly into …
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Detection of hydrogen embrittlement in steel and steel alloys using methods of neutron radiography
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1994.
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Prediction of tear resistance of some aluminum and steel alloys by small scale tensile tests
Thesis: B.S., Massachusetts Institute of Technology, Department of Mechanical Engineering, 1961
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Containerless measurement and thermodynamic prediction of the physical properties of liquid steels
Incomplete control over macrosegregation during steel solidification hinders the development of novel steel alloys and applications by limiting compositions which can be successfully cast. Analysis of macrosegregation at the solidification front is aided by study of the liquid state via fluid …
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An Experimental Evaluation of Micro-pitting Performance of Two Bearing Steels
… micro-pitting performance of two typical bearing steels. Case hardened roller specimens made of alloy 9310 and through-hardened roller specimens made of alloy 485-2 are procured. Test matrices are defined according to the Latin Hypercube Space Filling Design of Experiment approach and executed to …
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An Integrated Time-Temperature Approach for Predicting Mechanical Properties of Quenched and Tempered Steels
The purpose of this work was to develop a steel tempering model that is useful to the commercial heat treater. Most of the tempering models reported address isothermal conditions which are not typical of most heating methods used to perform the tempering heat treatment. In this work, a …
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Cr(VI) Generation and Stability in Drinking Water
… to drinking water from Cr present in stainless steel alloys. At the maximum residual disinfectant level (MRDL), Cr(VI) formation decreased in the order chlorine dioxide > chlorine > chloramine. Less Cr(VI) was released from stainless steel at lower pH in the presence of chlorine, but the …
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Ultrasonic Real-Time Quality Monitoring Of Aluminum Spot Weld Process
… for the inspection of spot welds manufactured in steel alloys, and has been mainly applied in the automotive industry. In recent years, a variety of materials have been introduced to the automotive industry. These include high strength steels, magnesium alloys, and aluminum alloys. Aluminum alloys …
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Development Of High Strength High Toughness Third Generation Advanced High Strength Steels.
<p>Third generation advanced high strength steels (AHSS's) are emerging as very important engineering materials for structural applications. These steels have high specific strength and thus will contribute significantly to weight reduction in automotive and other structural component. In this …
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Dynamic Shear Bands in Metals under High Strain Rates
… in capturing the mechanical behavior of steel alloy under different temperatures and strain rates, and therefore is used in the finite element analysis. Generally in finite element analysis, a finer mesh will yield results that are more accurate, but on the other hand will increase the …
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Non-classical methods for the simulation and design of quantum materials.
… ranging from robust structural materials like steel alloys to the sophisticated semiconductor devices that drive modern electronics. Many of these materials can be studied and understood computationally through classical methods such as Density Functional Theory, which apply traditional …
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Microstructural Deformation Mechanisms and Optimization of Selectively Laser Melted 316L Steel
… at the microstructural level in 3D printed alloys. The complex in-situ heat treatments during 3D printing leaves a unique and complicated microstructure in the as-built 3D printed metals, particularly alloys. The microstructure is made of a hierarchical stacking of some interconnected …
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Design considerations of a 15kW heat exchanger for the CSPonD Project
… at $7.82/kg. A selection of high temperature alloys capable of withstanding the high operating temperatures of molten salts were chosen as candidate materials for the heat exchanger and ranked based on the allowable stress levels near the operating temperature range of the heat exchanger. …
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The effect of heat treatment on the fatigue strength of alloy steels
Made available in DSpace on 2016-11-09T23:48:03Z (GMT). No. of bitstreams: 2 6000932_opt.pdf: 12375653 bytes, checksum: 7312dbbbb4032589b42b85219f68b14d (MD5) license.txt: 4183 bytes, checksum: 1dcc2037833d76bede73d5717587543b (MD5) Previous issue date: 1919
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Some factors affecting retained austenite in alloy steels
Thesis (M.S.)--Michigan State College of Agriclture and Applied Science. Dept. of Chemical and Metallurgical Enineering, 1947
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Corrosion Behavior of Nuclear Waste Storage Canister Materials
The nature of interaction of mild steel nuclear waste storage containers with technetium ions is not fully known. Technetium is formed during nuclear processing and some of this technetium has leaked at the Hanford nuclear waste storage site in Washington State. It is often found as highly oxidized …
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