Research on transversal connection strengthening of T beam bridges

Chen, C; Pan, Yong; Yang, Caiqian

doi:10.1088/1757-899x/293/1/012014

Cited by 1 publication

(3 citation statements)

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“…As similar with the earlier studies, bright austenite lath surrounded by the δ ‐ferrite grains was observed, Figure 11a [36, 38, 40, 44]. The width of the austenite phase was ∼2.3 μm.…”

Section: Resultssupporting

confidence: 90%

“…Bright austenite (γ) lath surrounded by the δ‐ ferrite grains was observed, consistent with those reported earlier, Figure 10a [36, 38, 44–45]. The recrystallized bright austenite grain surrounded by the δ ‐ferrite and austenite grains was further observed, Figure 10b.…”

Section: Resultssupporting

confidence: 90%

“…The rhombus‐shaped σ ‐phase was precipitated in this micrograph. The σ ‐phase formed on the coupled lamellar precipitates is evident and consistent with those reported earlier, Figure 12b [36, 44–45]. Selected area electron diffraction pattern and its interpretation of the σ ‐phase formed during ageing at 950 °C were mentioned, Figure 12c.…”

Section: Resultssupporting

confidence: 90%

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Effect of thermal ageing on microstructure, mechanical properties, and fracture behaviour of 50 % cold rolled duplex stainless steel (alloy 2507)

Ghosh

Yadav

2023

Materialwissenschaft Werkst

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The paper deals with cold rolling and ageing on microstructure and mechanical properties of 2507 duplex stainless steel. Microstructure depicts acicular/Widmanstätten austenite and δ‐ferrite with dissimilar volume fraction (∼0.55 for ferrite and ∼0.45 for austenite). Cold rolling and ageing at 950 °C, 1000 °C and 1050 °C result in equiaxed austenite for samples solution treated at 1040 °C and elongated at 1300 °C. By lowering ageing temperature from 1050 °C to 950 °C, structure becomes finer from ∼20 μm to <10 μm grain size. The sigma (σ) phase appears after ageing at 950 °C. Micro‐hardness reveals maximum hardness for the hot rolled, solutionized (1040 °C) water quenched, and cold rolled (50 %) sample (380 HVδF 100 and 430 HVγ 100), whereas the tensile results reveal the hot rolled, solution treated (1300 °C, 1040 °C), cold rolled and aged at 950 °C samples show higher strength (yield strength=625 MPa, 567 MPa and ultimate tensile strength=892 MPa, 826 MPa) and lower ductility (23 %, 32 %) due to the σ‐phase. The solution treated (1040 °C), cold rolled, aged at 1050 °C sample exhibits attractive strength and ductility combination (∼30 GPa %). Fractography supports the tensile results.

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Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 90%

Section: Resultssupporting

confidence: 90%

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