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Showing 1 to 18 of 18 for “"Austenitic steels"”.
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Transformation toughening of metastable austenitic steels
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1984.
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Transformation toughening in phosphocarbide-strengthened austenitic steels
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1988.
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High temperature cracking of nickel chromium austenitic steels.
… of AISI 304 (an l8Cr 1ONi non-hardenable austenitic steel in which the grain boundaries are free to migrate) was investigated. A linear relationship between applied cracking stress and the reciprocal of the square root of the grain size was found. This is consistent with the cracking …
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Transformation toughening of [gamma][prime]-strengthened metastable austenitic steels
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1990.
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Mechanics of strain-induced transformation toughening in metastable austenitic steels
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Mechanics of microvoid nucleation and growth in high-strength metastable austenitic steels
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1995.
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Deformation mechanisms and mechanical properties of hot rolled Fe-Mn-C-(Al)-(Si) austenitic steels
Mechanical properties of high Mn austenitic Fe-26.5Mn-3.6Al-2.2Si-0.38C-0.005B, Fe-30.0Mn-3.1Al-1.9Si and Fe-18.9Mn-0.62C-0.02Ti-0.005B (in mass%) steels after different solution treatments were investigated. The results show that the solution treatment has a significant influence on microstructure …
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Mechanical property of body-thoroughly enhanced austenitic stainless steel and high-Mn steel by industry-applicable 3-axis stress-released impact
As two important austenitic steels, the austenitic stainless steel (SS) and austenitic high-Mn steel have been seeking a decent yield strength to match their versatile exceptional advantages. However, the traditional, severe, and high-strain-rate plastic deformation techniques currently used to …
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Impact fracture of austenitic stainless steels
… careful material selection is imperative. Austenitic stainless steels may be a likely choice for hydrogen service because their behavior in high pressure hydrogen ranges from no apparent damage to relevant, but generally small ductility loss (13). Because of this Variation in behavior, a …
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Modellierung und Simulation des Warmumformverhaltens von hoch stickstofflegierten Stählen
High nitrogen steels (HNS) differ from conventional austenitic steels on their higher yield and tensile strength as well as improved high temperature strength. HNS show also a better corrosion resistance, pitting resistance and stress corrosion cracking resistance. However, these advantages are …
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An assessment of the fracture toughness of two cast and wrought stainless steels
… displacement concept has been applied to austenitic steels at 25°C and in the temperature range 400-800°C. The measurement of a maximum load crack-tip displacement in a notch bend test, provided a good indication of fracture-toughness since it included a portion of slot: crack-growth. The …
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Complex Mechanical Properties of Steel
… quantitative estimation of the microstructure of steels as a function of most of the important determining variables, it remains the case that it is impossible to calculate all but the simplest of mechanical properties given a comprehensive description of the structure at all conceivable scales. …
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Microstructural study of intergranular M23C6 precipitates in Alloy 709
… from the known behaviors of other Fe-20Cr-25Ni austenitic steels so that the Time-Temperature-Precipitation diagram of the M23C6 precipitate phase in Alloy 709 was newly suggested. The presence of the intergranular M23C6 caused compressive stress on the austenite matrix and tensile stress on the …
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The evaluation of the corrosion behaviour of Hercules™ alloy
Ni contributes about 60% of austenitic stainless steel manufacturing material price. This means that the price of austenitic stainless steel increases with an increase of Ni. Ni price fluctuation has led to major efforts to reduce its content in austenitic steels. Ni has been replaced with readily …
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Effect of microstructural constituents on hydrogen diffusion in multiphase alloys
… trapping sites. Multiphase, high-strength steels, which are of particular importance due to their susceptibility to embrittlement and their ubiquity in applications where exposure to hydrogen is expected, are the main focus of this work. A combination of hydrogen charging, thermal …
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Spin cluster expansion approach to the interplay between short-range order and interstitial atoms in austenitic stainless steels
… severely degrades the mechanical properties of austenitic stainless steels, thus limiting their use in hydrogen transport and storage applications. Despite extensive investigations, the dominant underlying mechanism of HE remains unclear. Recent studies have highlighted short-range order (SRO) …
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Electron diffuse-scattering fluctuation and correlation analysis in complex face-centered-cubic alloys via four-dimensional scanning transmission electron microscopy
… such as high/medium entropy alloys (H/MEA) and austenitic steels. This interest stems from their exceptional combination of high strength and toughness over a broad temperature range. A key factor believed to significantly influence the mechanical properties of these alloys is the formation of …
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Termomechanická únava austenitických ocelí
… poškození a odezvu materiálu. Korozivzdorná austenitická ocel Sanicro 25 byla podrobena zatěžovacími zkouškami termomechanické únavy ve fázi a mimo fázi rozdílnými amplitudami celkové deformace v rozmezí teplot 250 až 700 °C. Mechanismy poškození byly zkoumány rastrovacím elektronovým …