Corrosion Resistance Studies of Austenitic Stainless Steel Grades in Molten Zinc-Aluminum Alloy Galvanizing Bath

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Loto R. T., Ozcan E.

JOURNAL OF FAILURE ANALYSIS AND PREVENTION, cilt.16, sa.3, ss.427-437, 2016 (ESCI) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 16 Sayı: 3
  • Basım Tarihi: 2016
  • Doi Numarası: 10.1007/s11668-016-0103-4
  • Dergi Adı: JOURNAL OF FAILURE ANALYSIS AND PREVENTION
  • Derginin Tarandığı İndeksler: Emerging Sources Citation Index (ESCI), Scopus
  • Sayfa Sayıları: ss.427-437
  • Anahtar Kelimeler: Austenitic stainless steel, Corrosion, Microstructure, Mechanical test, LIQUID-METAL CORROSION, HARDWARE MATERIALS, 316L
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

The corrosion inhibition performance and mechanical behavior of galvanized and heat-treated four newly developed austenitic stainless steel grades and type 316L austenitic stainless steel for application as sink rolls in galvanizing baths of 0.14-0.21 wt.% aluminum was investigated and compared through immersion corrosion test to determine the weight loss between 168 and 504 h, tensile test, and Charpy impact test. The delta ferrite content of the test samples was observed and estimated through optical microscopy, feritscope, and ONRL diagram. Scanning electron microscopy and energy dispersive spectroscopy were used to characterize the surface microstructure, morphology, and chemical composition of the galvanized coating of the steel samples. Result showed that only two of the newly developed stainless steel compositions were selected for use in fabrication of galvanizing hardware based on the comparisons of corrosion and mechanical performances of tested alloys.