Surface Crack and Organization of Hot Rolled S31803 Duplex Stainless Steel Bars

Ming Hua Wu; Zhan Ying Liu; Hui Yang

doi:10.4028/www.scientific.net/AMM.670-671.41

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 670-671Surface Crack and Organization of Hot Rolled...

Surface Crack and Organization of Hot Rolled S31803 Duplex Stainless Steel Bars

Abstract:

In bar rolling of S31803 duplex stainless steel, the surface crack is easy to appear. Through the observation on the microstructure, ferrite and austenite morphology and phase ratio were analyzed. The surface cracks of S31803 duplex stainless steel bar is mainly because of the dual phase microstructure softening mechanism of different in thermal processing, and the double phase stainless steel heat plasticity decrease. When the ferrite and austenite proportion close, and the heating temperature is too high, to reduce the binding force between the grains of billet surface, easy to cause the crack surface of a bar.

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Periodical:

Applied Mechanics and Materials (Volumes 670-671)

Pages:

41-45

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.670-671.41

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Online since:

October 2014

Authors:

Ming Hua Wu*, Zhan Ying Liu, Hui Yang

Keywords:

Bar, Crack, Duplex Stainless Steel, Microstructure

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* - Corresponding Author

References

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