Oxidation Resistance of Austenitic Steels under Thermal Shock Conditions in an Environment Containing Water Vapor

Kościelniak, Barbara; Smoła, G.; Grzesik, Z.; Hernas, A.

doi:10.1515/htmp-2016-0209

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…Due to the high corrosion resistance and creep resistance of these types of materials in structural applications, their weldability and new welding technology are being developed. The content of chromium and nickel alloys improves anti-corrosion parameters, which extends the operating time of welded elements [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

Laser welding of pipe stubs made from super 304 steel. Numerical simulation and weld properties

Danielewski

2019

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The laser welding process of test pipe stubs which were made from Super 304 stainless steel is usually used to produce components of a power infrastructure. It was numerically simulated and the obtained results are presented in this paper. For the laser welding method, the weldability of this steel is presented, as well as the results of strength and microstructure tests of a joint welded at the parameter settings selected from a numerical simulation. The chemical composition, including the increased content of alloying elements such as chromium and nickel, improves the strength characteristics of the welded steel, allowing for the production of components of superheaters and partition walls of boilers operating in supercritical parameters.

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Section: Introductionmentioning

confidence: 99%

Laser welding of pipe stubs made from super 304 steel. Numerical simulation and weld properties

Danielewski

2019

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“…9,10) The high-temperature mechanical and oxidation properties of HR6W have been investigated to determine the suitability of this alloy for high-temperature structural components. 11,12) Thermodynamic calculations have indicated that the M 23 C 6 carbide and C14Fe 2 W Laves phase are the main equilibrium phases of HR6W in the temperature range between 973 K and 1073 K, which is the envisaged operating temperature of the alloy. 1315) However, the precipitation kinetics of both phases in this temperature range has not yet been fully clarified.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution of Fe–Ni-Based Alloy HR6W during Isothermal Aging

2019

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The age-hardening behavior of the FeNi-based alloy HR6W was investigated in the temperature range between 973 K and 1073 K. A twostep increase of hardness was detected for the alloy at every aging temperature; the first increase of hardness results from the precipitation of M 23 C 6 carbides, and the second increase corresponds to precipitation of the C14Fe 2 W Laves phase. The timetemperatureprecipitation diagram for the alloy was established on the basis of the results of hardness measurements and microstructure observations, where the precipitation of the C14Fe 2 W Laves phase was slower than that of the M 23 C 6 carbides by three orders of magnitude and the nose temperature of the Laves phase was greater than 1073 K. The M 23 C 6 carbides precipitated with a plate-like morphology along grain boundaries at the early stage of aging, followed by the precipitation of the C14Fe 2 W Laves phase with a granular morphology with increasing aging time. The M 23 C 6 carbides and C14Fe 2 W Laves phase are aligned under the stress condition because of their precipitation on the dislocations introduced during creep deformation. [

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Precipitation Behavior of Wrought Fe-Ni-Based Alloy HR6W

Iwamaru

Hisazawa

Terada

2019

J. Japan Inst. Metals and Materials

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Age hardening behavior of Fe Ni based alloy HR6W was investigated at the temperature range between 973 K and 1073 K. Two step increase in hardness is detected for the alloy at each temperature; the rst increase in hardness results from the precipitation of M 23 C 6 phase and the second one corresponds to that of Laves phase. The TTP time temperature precipitation diagram for the alloy is established based on the results of hardness measurement and microstructure observation, where the precipitation of Laves phase is slower than that of M 23 C 6 phase by three orders of magnitude and the nose temperature of Laves phase is above 1073 K. The M 23 C 6 phase precipitates with plate like morphology along grain boundaries at the early stage of aging, followed by the precipitation of Laves phase with granular morphology with increasing aging time. It is found that the M 23 C 6 and Laves phases are aligned under stress condition, due to their precipitation on the dislocations introduced during creep deformation.

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Oxidation Resistance of Austenitic Steels under Thermal Shock Conditions in an Environment Containing Water Vapor

Cited by 5 publications

References 8 publications

Laser welding of pipe stubs made from super 304 steel. Numerical simulation and weld properties

Laser welding of pipe stubs made from super 304 steel. Numerical simulation and weld properties

Microstructure Evolution of Fe–Ni-Based Alloy HR6W during Isothermal Aging

Precipitation Behavior of Wrought Fe-Ni-Based Alloy HR6W

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