Effects of Ce on the Inclusions and Mechanical Properties of 2Cr13 Stainless Steel

Abstract:

The effects of rare earth metals on the inclusions and the mechanical properties of 2Cr13 stainless steel were studied by metallographic examination, scanning electron microscope (SEM) and energy spectrum analysis. The results show that the morphologies and sizes of inclusions in 2Cr13 stainless steel are changed, and rare earth metals played a very good role of modifying inclusions. The fracture mode of 2Cr13 stainless steel is typical cleavage fracture, but quasi-cleavage and dimple fracture after adding Ce into the steel, and the spherical inclusions of rare earth oxysulfide in the dimple are the main factors for this transformation. The transverse impact toughness of 2Cr13 stainless steel is improved obviously by Ce. In comparison with 2Cr13 stainless steel without Ce, the transverse impact toughness of 2Cr13 stainless steel with Ce is increased 54.55% at -40°C, and the room temperature strength are improved, the elongation and reduction of area have been improved 11.90%, 16.67 respectively.

• Periodical: Applied Mechanics and Materials (Volumes 174-177)
• Pages: 1344-1348
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.174-177.1344
• Online since: May 2012
• Authors: Xiao Liu, Long Mei Wang
• Keywords: 2Cr13 Stainless Steel, Inclusion, Mechanical Property, Re

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