Recent Advances in Steels for Coal Fired Power Plant: A Review

Gibbons, Thomas B.

doi:10.1007/s12666-013-0301-7

Cited by 28 publications

(7 citation statements)

References 2 publications

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“…As regards austenitic steels, the fine-grained structure is advantageous in terms of plasticity (ductility) and corrosion resistance. Tests discussed in publications [1,5] revealed that [6]. The microstructure of the test steel also contained numerous and large primary precipitates, locally arranged in bands.…”

Section: Microstructural Testsmentioning

confidence: 99%

Microstructure and Mechanical Properties of Welded Joints in Austenitic Steel TP347HFG after Operation

Wojsyk¹,

Merda²,

Klimaszewska³

et al. 2020

eBIS

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The analysis involved a similar welded joint made of steel TP347HFG after operation at a temperature of 580°C. Tests revealed that the primary mechanisms responsible for the degradation of the microstructure in all areas of the joint subjected to analysis were precipitation processes within the grains and along the grain boundaries. The grain boundaries contained two morphologies forming a continuous lattice. Precipitation processes resulted in the high tensile strength of the joint and high hardness within the weld face area. After operation, the test joint was characterised by relatively high impact energy, which could be attributed to the fine-grained microstructure and the presence of numerous annealing twins.

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Section: Microstructural Testsmentioning

confidence: 99%

Microstructure and Mechanical Properties of Welded Joints in Austenitic Steel TP347HFG after Operation

Wojsyk¹,

Merda²,

Klimaszewska³

et al. 2020

eBIS

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“…It is known that super-heater and re-heater tubes are operated at the highest temperature range in USC power plants. Therefore, new requirements for the properties of the materials are also put forward: long-term rupture strength (100 MPa for 10 5 h), steam corrosion and oxidation resistance [7]. Nowadays, advanced austenitic heat resistant steels are the most suitable material for super-heater and re-heater tubes in USC power plants in the view of superior long-term high-temperature strength, excellent oxidation/corrosion resistance, as well as the relatively low cost [5,8].…”

Section: Introductionmentioning

confidence: 99%

Microstructures and Mechanical Properties of a Newly Developed Austenitic Heat Resistant Steel

Liu

Chu

Yuan

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

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The effect of heat treatment on the microstructures and mechanical properties of a newly developed austenitic heat resistant steel (named as T8 alloy) for ultra-supercritical applications have been studied. Results show that the main phases in the alloy after solution treatment are c and primary MX. Subsequent aging treatment causes the precipitation of M 23 C 6 carbides along the grain boundaries and a small number of nanoscale MX inside the grains. In addition, with increasing the aging temperature and time, the morphology of M 23 C 6 carbides changes from semi-continuous chain to continuous network. Compared with a commercial HR3C alloy, T8 alloy has comparable tensile strength, but higher stress rupture strength. The dominant cracking mechanism of the alloy during tensile test at room temperature is transgranular, while at high temperature, intergranular cracking becomes the main cracking mode, which may be caused by the precipitation of continuous M 23 C 6 carbides along the grain boundaries. Typical intergranular cracking is the dominant cracking mode of the alloy at all stress rupture tests.

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“…The high efficiency is mainly attributed to the increased temperature (700 °C) and pressure (35 MPa). For the highest temperatures, which are found in the superheaters and reheaters, materials are necessary to provide sufficient creep strength in presence of corrosive environments of the flue gases on the fireside and resist steam oxidation on the internal tube surfaces [1,2].…”

Section: Introductionmentioning

confidence: 99%

“…Austenitic stainless steels have previously been used for components in USC thermal power plants [1][2][3]. Normally, advanced austenitic stainless steels are designed to withstand temperatures up to 650 °C.…”

Section: Introductionmentioning

confidence: 99%

Creep and Fatigue Interaction Behavior in Sanicro 25 Heat Resistant Austenitic Stainless Steel

Calmunger

Chai

Johansson

et al. 2016

Trans Indian Inst Met

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Recent Advances in Steels for Coal Fired Power Plant: A Review

Cited by 28 publications

References 2 publications

Microstructure and Mechanical Properties of Welded Joints in Austenitic Steel TP347HFG after Operation

Microstructure and Mechanical Properties of Welded Joints in Austenitic Steel TP347HFG after Operation

Microstructures and Mechanical Properties of a Newly Developed Austenitic Heat Resistant Steel

Creep and Fatigue Interaction Behavior in Sanicro 25 Heat Resistant Austenitic Stainless Steel

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