Self-repairing behavior of oxidation diffusion layer and phase transformation mechanism during tensile test of 19Cr duplex stainless steels with various Mn content
0103 physical sciences
02 engineering and technology
0210 nano-technology
01 natural sciences
DOI:
10.1016/j.corsci.2014.10.046
Publication Date:
2014-11-06T14:49:49Z
AUTHORS (7)
ABSTRACT
Abstract High-temperature oxidation of 19Cr duplex stainless steels with various Mn content, from 5.5 to 15 wt.%, were performed at 1100 °C in air. Self-repairing behavior of ferrite diffusion layer occurred in DSS with 10 wt.% Mn content, as the increased diffused Mn content induced more ferrite phase transformation. Ferrite diffusion layer became thicker with the increase of oxidation time and Mn content. 10 wt.% Mn content DSS exhibited exceeding 65% in elongation as transformation induced plasticity occurred in austenite phase with a sequential martensite transformation of γ → e-martensite → α′-martensite during tensile deformation.
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