Characterization of the creep properties of heat resistant 9–12% chromium steels by miniature specimen testing

Olbricht, Jürgen; Bismarck, Marc; Skrotzki, Birgit

doi:10.1016/j.msea.2013.07.067

Cited by 23 publications

(12 citation statements)

References 18 publications

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“…A series of experiments was carried out on standard sized and sub‐size specimens of P91 to evaluate the above mentioned miniature specimen creep testing method [, ]. One aspect was to check whether loading errors resulting from testing in a sealed environmental chamber are low enough to still allow accurate tests of miniature specimens.…”

Section: Example Resultsmentioning

confidence: 99%

“…This is especially important as small‐sized specimens with only 3 mm gauge length diameter are used in these tests, resembling the typical dimensions of super heater components. Further details on this miniature specimen creep test method are available in . The small specimen size results in generally low creep load levels, and load errors therefore need to be reduced as far as possible.…”

Section: Methodsmentioning

confidence: 99%

“…The extensometer bars transmit the deformation of the specimen to digital displacement probes which are positioned outside the chamber (for both atmosphere and temperature protection). Further details on the choice of these sensors were given in .…”

Section: Methodsmentioning

confidence: 99%

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Mechanical characterisation of heat resistant power plant materials by creep and fatigue testing in controlled gas atmospheres

Olbricht

Lippmann

Klingelhöffer

et al. 2014

Materialwissenschaft Werkst

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The continuing increase of steam parameters of fossil fuelled high efficiency power plants and new combustion concepts for the capture and storage of carbon dioxide lead to harsher service conditions for the components and structural materials of such facilities. The present work introduces a test concept that allows testing of candidate materials under simultaneous mechanical and corrosive loading. The material's reaction can be directly investigated under simulated temperature, load and corrosion conditions of modern installations. First results obtained for different heat resistant steels suggest a strong influence of the environmental medium on the fatigue and creep behaviour. Such findings complement the data that is available from the classical qualification process of the materials and may support the material selection for new power plant installations.

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Section: Example Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Mechanical characterisation of heat resistant power plant materials by creep and fatigue testing in controlled gas atmospheres

Olbricht

Lippmann

Klingelhöffer

et al. 2014

Materialwissenschaft Werkst

View full text Add to dashboard Cite

show abstract

“…It can be used for testing irradiated materials to minimize the radiation dose, determining the local properties of weld zones or the remaining life of service exposed parts, the development of new materials available in limited amounts, etc. Different specimen geometries have been introduced in the past for tensile, fracture, and creep properties determination [ 1 , 2 , 3 , 4 , 5 , 6 ], including the well-known small punch test (SPT) and small punch creep test (SPC) [ 7 , 8 , 9 , 10 , 11 , 12 , 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 ]. The typical shape of the small punch specimen is most often a disc of 8 mm diameter or a square 10 × 10 mm and 0.5 mm thickness.…”

Section: Introductionmentioning

confidence: 99%

Tensile and Creep Testing of Sanicro 25 Using Miniature Specimens

et al. 2018

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Tensile and creep properties of new austenitic steel Sanicro 25 at room temperature and operating temperature 700 °C were investigated by testing on miniature specimens. The results were correlated with testing on conventional specimens. Very good agreement of results was obtained, namely in yield and ultimate strength, as well as short-term creep properties. Although the creep rupture time was found to be systematically shorter and creep ductility lower in the miniature test, the minimum creep rates were comparable. The analysis of the fracture surfaces revealed similar ductile fracture morphology for both specimen geometries. One exception was found in a small area near the miniature specimen edge that was cut by electro discharge machining, where an influence of the steel fracture behavior at elevated temperature was identified.

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“…A substantial effort is currently devoted to the development of small specimens and corresponding test techniques from which useful information can be derived. A number of techniques have been developed to extract mechanical properties from sub-sized specimens [1][2][3][4]. These include specimens that are either miniaturized versions of their full-scale counterparts or specifically designed discs or coupon specimens of small dimensions.…”

Section: Introductionmentioning

confidence: 99%

Application of micro-tensile test for material characterization of mild steel DC01

Konopík

Farahnak

Rund

et al. 2018

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During recent years, material characterization based on miniature tensile specimens has been investigated extensively. The Small Punch Test (SPT) is often used for determination of tensile properties but alternative miniature tensile specimen geometries have been suggested due to the limitations of the SPT specimen geometry. However, compared to SPT, the Micro-Tensile Test (M-TT) has a significant advantage since it does not need previous established correlations and enables direct results conversion into standard terms. In this paper, the applicability of the M-TT is investigated for material characterization including Lankford coefficients, hardening laws and stress-strain curves. For this purpose, mild steel DC01 M-TT samples were extracted from sheet in Rolling, Transverse and Diagonal Directions. Moreover, M-TT samples were machined to achieve different thicknesses for indicating thickness effects on strain path.

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Characterization of the creep properties of heat resistant 9–12% chromium steels by miniature specimen testing

Cited by 23 publications

References 18 publications

Mechanical characterisation of heat resistant power plant materials by creep and fatigue testing in controlled gas atmospheres

Mechanical characterisation of heat resistant power plant materials by creep and fatigue testing in controlled gas atmospheres

Tensile and Creep Testing of Sanicro 25 Using Miniature Specimens

Application of micro-tensile test for material characterization of mild steel DC01

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