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Effect of Reversion Heat treatment on Duplex Stainless Steels

Effect of Reversion Heat treatment on Duplex Stainless Steels

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Description
The thermal aging embrittlement of duplex stainless steels is one of the key material property degradation that would limit their industrial applicability. In this investigation, we study the effect of reversion heat treatment on the mechanical properties of the thermally embrittled steels. The samples were solutionized, aged, reversion heat treated and re-aged. The tensile strength of the aged sample had increased with respect to the solutionized condition because in aged condition, the ferrite phase was spinodally decomposed into iron rich alpha (¿) and chromium rich alpha-prime (¿¿) precipitates and also the chromium nitride precipitates was found along with these precipitates. The 60 minutes reversion heat treated samples showed a maximum recovery in tensile strength of upto 92% with respect to the solutionized condition because the temperature of 550 ¿C is above the (¿ + ¿¿) miscibility gap, the ferritic phase was homogenized again. In other words, Ferich ¿ and Cr-rich ¿¿ prime precipitates which were formed during ageing become thermodynamically unstable and dissolve inside the ferritic phase.
Product details
Binding:
Paperback
Number of Pages:
136
Release Date:
2025-11-03
Publication Date:
2025-11-03
Publisher:
LAP LAMBERT Academic Publishing
Languages:
Original: English
ISBN10:
6209183565
ISBN13:
9786209183560
Weight:
221 g
Height:
150 cm
Width:
220 cm
Thickness:
9 cm
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