Effects of nano-ceramic additives on high-temperature mechanical properties and corrosion behavior of 310S austenitic stainless steel
A novel approach to reduce Ni content for the 310S austenitic stainless steel was proposed. The nano-ceramic additive (L) was applied to 310S steel to replace part of Ni element and reduce the cost. By means of thermal simulation, X-ray diffraction, field emission scanning electron microscopy, and e...
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Veröffentlicht in: | Journal of iron and steel research, international international, 2023-03, Vol.30 (3), p.591-600 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | A novel approach to reduce Ni content for the 310S austenitic stainless steel was proposed. The nano-ceramic additive (L) was applied to 310S steel to replace part of Ni element and reduce the cost. By means of thermal simulation, X-ray diffraction, field emission scanning electron microscopy, and electron backscattered diffraction, the effects of nano-ceramic additives on high-temperature mechanical properties and corrosion behavior of the 310S steel were studied. The results indicate that the morphology and density of the (Fe, Cr)
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carbides are varied, which play an important role in the high-temperature mechanical properties and corrosion behavior. After adding nano-ceramic additives, the high-temperature tensile strength and yield strength are improved simultaneously, in spite of a slight decrease in the total elongation. During high-temperature corrosion process, the mass gain of all the samples is parabolic with time. The mass gain is increased in the 310S steel with nano-ceramic additive, while the substrate thickness is significantly larger than 310S steel. The more stable and adherent FeCr
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spinel form is the reason why the high-temperature corrosion resistance was increased. The (Fe, Cr)
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carbides distribution along grain boundaries is detrimental to the high-temperature corrosion resistance. |
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ISSN: | 1006-706X 2210-3988 |
DOI: | 10.1007/s42243-022-00828-x |