오스테나이트계 중탄소 및 저탄소 스테인리스강의 입계부식 거동 분석
Intergranular Corrosion Behavior of Medium and Low Carbon Austenitic Stainless Steel
1
조회
0
다운로드
1
인용
0
참고문헌
키워드
초록
Austenitic stainless steel has been widely used because of its good corrosion resistance and mechanical properties. However, intergranular corrosion can occur if the alloy is welded or aged. The objective of this study was to determine intergranular corrosion behaviors of austenitic medium carbon (0.05 wt%) and low carbon (0.02 wt%) stainless steel aged at several conditions. Alloys were evaluated according to ASTM A262 Practice A, ISO 12732 DL-EPR (double loop-electrochemical potentiokinetic reactivation) test, and ASTM A262 Practice C. The degree of sensitization and intergranular corrosion rate were obtained. The relationship between the degree of sensitization and the intergranular corrosion rate showed a very large fluctuation. Such behavior might be related to whether two-dimension tests or three-dimension tests were performed. On the other hand, regardless of carbon content of alloys, when the intergranular corrosion rate increased, the degree of sensitization also increased. However, the DL-EPR test showed a higher sensitivity than the Huey test for differentiating the intergranular corrosion property at a low intergranular corrosion rate, while the Huey test had a higher sensitivity than the DL-EPR test for distinguishing the intergranular corrosion property at a high intergranular corrosion rate.
Abstract
Austenitic stainless steel has been widely used because of its good corrosion resistance and mechanical properties. However, intergranular corrosion can occur if the alloy is welded or aged. The objective of this study was to determine intergranular corrosion behaviors of austenitic medium carbon (0.05 wt%) and low carbon (0.02 wt%) stainless steel aged at several conditions. Alloys were evaluated according to ASTM A262 Practice A, ISO 12732 DL-EPR (double loop-electrochemical potentiokinetic reactivation) test, and ASTM A262 Practice C. The degree of sensitization and intergranular corrosion rate were obtained. The relationship between the degree of sensitization and the intergranular corrosion rate showed a very large fluctuation. Such behavior might be related to whether two-dimension tests or three-dimension tests were performed. On the other hand, regardless of carbon content of alloys, when the intergranular corrosion rate increased, the degree of sensitization also increased. However, the DL-EPR test showed a higher sensitivity than the Huey test for differentiating the intergranular corrosion property at a low intergranular corrosion rate, while the Huey test had a higher sensitivity than the DL-EPR test for distinguishing the intergranular corrosion property at a high intergranular corrosion rate.
참고문헌 (25)
- P. Dhaiveegan, "Corrosion behavior of 316L and 304 stainless steels exposed to industrial-marine-urban environment: field study", RSC Advances, 6(53), pp.47314~47324 (2016), Royal Society of Chemistry (RSC)[DOI]
- R.R Maller, "Passivation of stainless steel", Trends in Food Science & Technology, 9(1), pp.28~32 (1998), Elsevier BV[DOI]
- A. H. Tuthill, "Specifying stainless steel surface treatments", Advanced Materials & Processes, 142, pp.34~ (1992)
- Nickel Development Institute, "Design guidelines for the selection and use of stainless steel, A Designers’ Handbook series No.9014", pp.5~ (2020), Nickel Development Institute
- U. J. Lim, "Effect of sensitization on the corrosion characteristics of STS 304 pipe", Corrosion and Protection, 6, pp.1~ (2007)
- D. Iacoviello, "Neural networks application in an AISI 304L intergranular corrosion resistance analysis", La Metallurgia Italiana, 96, pp.10~ (2003)
- C. L. Briant, "The effects of deformation induced martensite on the sensitization of austenitic stainless steels", Metallurgical Transactions A, 11(12), pp.2009~2017 (1980), Springer Science and Business Media LLC[DOI]
- Francesco Iacoviello, "Analysis of the intergranular corrosion susceptibility in stainless steel by means of potentiostatic reactivation tests", Procedia Structural Integrity, 3, pp.269~275 (2017), Elsevier BV[DOI]
- 김홍표, "스테인리스강 입계부식", CORROSION SCIENCE AND TECHNOLOGY, 17(4), pp.183~192 (2018), 한국부식방식학회[DOI]
- A. JOSHI, "Chemistry of Grain Boundaries and Its Relation to Intergranular Corrosion of Austenitic Stainless Steel", Corrosion, 28(9), pp.321~330 (1972), NACE International[DOI]
- S. Lin, "Intergranular corrosion of austenitic stainless steel", Applied Mechanics and Materials, 229-231, pp.14~ (2012), The Electrochemical Society[DOI]
- A. Pardo, "Influence of Ti, C and N concentration on the intergranular corrosion behaviour of AISI 316Ti and 321 stainless steels", Acta Materialia, 55(7), pp.2239~2251 (2007), Elsevier BV[DOI]
- Marcin Żuk, "The effect of niobium and titanium in base metal and filler metal on intergranular corrosion of stainless steels", Welding Technology Review, 91(6), pp.30~38 (2019), Agenda Wydawnicza SIMP Przeglad Spawalnictwa[DOI]
- 오은종, "Effect of the Holding Time during Solution Heat Treatment on Intergranular Corrosion of Unstabilized Austenitic Stainless Steels", 대한용접접합학회지, 38(3), pp.278~288 (2020), 대한용접접합학회[DOI]
- Wang Julin, "The Effect of Solution Treatment on Intergranular Corrosion Resistance of a New Type Ultra Low Carbon Stainless Steel", CORROSION SCIENCE AND TECHNOLOGY, 6(3), pp.140~146 (2007), 한국부식방식학회
- 오은종, "304 스테인리스강 용접 열영향부의 입계 부식에 미치는 탄소함량의 영향", 대한용접접합학회지, 37(4), pp.322~332 (2019), 대한용접접합학회[DOI]
- "ASTM A262, Standard practices for detecting susceptibility to intergranular attack in austenitic stainless steels", ASTM, ~ (2002)
- Natarajan Parvathavarthini, "Electrochemical techniques for estimating the degree of sensitization in austenitic stainless steels", Corrosion Reviews, 32(5-6), pp.183~225 (2014), Walter de Gruyter GmbH[DOI]
- Mojtaba Momeni, "Tuning DOS measuring parameters based on double-loop EPR in H2SO4 containing KSCN by Taguchi method", Corrosion Science, 52(8), pp.2653~2660 (2010), Elsevier BV[DOI]
- M. K. Ahn, "Modification of electrochemical potentiokinetic reactivation test for detecting the degree of sensitization of alloy 600", Journal of the Corrosion Science Society of Korea, 22, pp.165~ (1993)
- Ankur V. Bansod, "Intergranular Corrosion Behavior of Low-Nickel and 304 Austenitic Stainless Steels", Journal of Materials Engineering and Performance, 25(9), pp.3615~3626 (2016), Springer Science and Business Media LLC[DOI]
- Salaheddin Rahimi, "A new approach for DL-EPR testing of thermo-mechanically processed austenitic stainless steel", Corrosion Science, 53(12), pp.4213~4222 (2011), Elsevier BV[DOI]
- "ISO 12732: 2006, Electrochemical potentiokinetic reactivation measurement using the double loop method", ISO, ~ (2006)
- M. A. Streicher, "Corrosion tests and standards - application and interpretation, 2nd edition", pp.257~ (2005), ASTM
- 김영식, "Intergranular Corrosion Mechanism of Slightly-sensitized and UNSM-treated 316L Stainless Steel", CORROSION SCIENCE AND TECHNOLOGY, 15(5), pp.226~236 (2016), 한국부식방식학회[DOI]