Acta Metallurgica Sinica (English Letters) ›› 2016, Vol. 29 ›› Issue (9): 859-868.DOI: 10.1007/s40195-016-0462-6
Special Issue: 2016年钢铁材料专辑
• Orginal Article • Previous Articles Next Articles
Paolo Ferro(),Alberto Fabrizi,Franco Bonollo
Received:
2015-12-30
Online:
2016-09-10
Published:
2016-11-04
Paolo Ferro,Alberto Fabrizi,Franco Bonollo. Non-isothermal Dissolution Modelling of Sigma Phase in Duplex Stainless Steels[J]. Acta Metallurgica Sinica (English Letters), 2016, 29(9): 859-868.
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Fig. 6 σ phase evolution during ageing heat treatment at 1123 K: comparison between experimental (points) and analytical results (n = 1.6, c = 0, Teq = 1176.5 K, T* = 1123 K, dgrain = 10 μm, M = 42 × 106 J m mol-1 s-1)
Fig. 7 Temporal isothermal evolution of σ phase volume fraction (x) at 1273 K; the discrete symbols are from experiments, and the curve is from Eq. (13) (Vσi = 24.0 vol.%, nd = 1.6, cd = 0, ω0 = 1.9 × 105 s-1, Qd = 202 kJ mol-1)
Fig. 8 Micrographs showing the initial percentage of σ phase (dark phase Vσi; white phase austenite; grey phase ferrite), before the non-isothermal dissolution heat treatments: aσ = 10.8 vol. %, bσ = 24.0 vol.%
Fig. 9 Temporal non-isothermal evolution of σ phase amount (V) for different initial σ phase contents: aV0 = 10.8 vol.%, bV0 = 24.0 vol.%. The discrete symbols are from experiments, and the curve is from the model (nd = 1.6, cd = 0, Qd = 202 kJ mol-1)
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