Microstructural Evolutions and its Influence on Properties of Super-Duplex Stainless Steel

Abstract:

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Color-optical microscopy, energy spectrum analysis, hardness measuring, tensile and corrosion testing were conducted to investigate characteristics of microstructure, mechanical properties and corrosion resistance of S32750 super-duplex stainless steel aged at 850~920°C. The results indicate that with the increase of aging temperature and aging time the content of σ phase increases, while the ferrite content decreases. The forming and growing of σ phase obtained during aging causes an increase in hardness and a reduction in ductility of the aged steel. Moreover, increasing aging time the corrosion resistance reduces, owing to a new formed austenite occurs.

Info:

Periodical:

Advanced Materials Research (Volumes 97-101)

Edited by:

Zhengyi Jiang and Chunliang Zhang

Pages:

656-659

DOI:

10.4028/www.scientific.net/AMR.97-101.656

Citation:

Y. Han et al., "Microstructural Evolutions and its Influence on Properties of Super-Duplex Stainless Steel", Advanced Materials Research, Vols. 97-101, pp. 656-659, 2010

Online since:

March 2010

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Price:

$35.00

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