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2 results on '"Lean austenitic stainless steel"'

1. The Influences of Martensitic Transformations on Cavitation-Erosion Damage Initiation and Pitting Resistance of a Lean Austenitic Stainless Steel

Author

Kai Yuan Wang, Kin Ho Lo, Chi Tat Kwok, Man Meng Wong, In Wa Iong, and Wenji Ai

Subjects
Cavitation erosion, Lean austenitic stainless steel, Martensitic transformation, Pitting corrosion, Materials of engineering and construction. Mechanics of materials, TA401-492
Abstract

This paper looks into the influences of martensitic transformations on the cavitation-erosion (CE) damage initiation mechanism and pitting corrosion resistance of a lean austenitic stainless steel. The ε and α' martensites are prime sites of CE damage initiation for this steel, whereas grain boundaries are more favourable damage initiation sites for other similar steels. The profusion of ε and α' results in fast surface roughening during the CE process, which may cause a compromise in performance when this steel (or similar steels that have the same CE damage mechanism) is used for such applications as hydro-machinery or piping. ε and α' also detrimentally affect the pitting resistance of this steel and so they are expected to affect CE resistance adversely due to the synergism between CE and corrosion.

Published
2016
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2. The Influences of Martensitic Transformations on Cavitation-Erosion Damage Initiation and Pitting Resistance of a Lean Austenitic Stainless Steel

Author

Chi Tat Kwok, In Wa Iong, Man Meng Wong, Kai Yuan Wang, Kin Ho Lo, and Wenji Ai

Subjects
Lean austenitic stainless steel, Materials science, 02 engineering and technology, engineering.material, Corrosion, 0203 mechanical engineering, Pitting corrosion, General Materials Science, Austenitic stainless steel, Materials of engineering and construction. Mechanics of materials, Piping, Mechanical Engineering, Metallurgy, fungi, technology, industry, and agriculture, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 020303 mechanical engineering & transports, Mechanics of Materials, Diffusionless transformation, Martensite, Cavitation erosion, Martensitic transformation, engineering, TA401-492, Grain boundary, 0210 nano-technology
Abstract

This paper looks into the influences of martensitic transformations on the cavitation-erosion (CE) damage initiation mechanism and pitting corrosion resistance of a lean austenitic stainless steel. The ε and α' martensites are prime sites of CE damage initiation for this steel, whereas grain boundaries are more favourable damage initiation sites for other similar steels. The profusion of ε and α' results in fast surface roughening during the CE process, which may cause a compromise in performance when this steel (or similar steels that have the same CE damage mechanism) is used for such applications as hydro-machinery or piping. ε and α' also detrimentally affect the pitting resistance of this steel and so they are expected to affect CE resistance adversely due to the synergism between CE and corrosion.

Published
2016

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