Comparative Study Between Sensitization Degree of the 0.4% Mo Austenitic Stainless Steel and UNS S31803 Duplex Stainless Steel

被引：0
|
作者：
de Lacerda, Jose C. [1 ]
de Freitas, Lucas L. [1 ]
Brito, Rogerio F. [1 ]
Moura Filho, Francisco [1 ]
Teixeira, Ricardo L. P. [1 ]
机构：
[1] Univ Fed Itajuba, Itabira, MG, Brazil
来源：
MATERIALS RESEARCH-IBERO-AMERICAN JOURNAL OF MATERIALS | 2021年 / 24卷 / 01期
关键词：
intergranular corrosion; degree of sensitization; DL-EPR; INTERGRANULAR CORROSION; DEGREES-C; PITTING CORROSION; DUAL-PHASE; SUSCEPTIBILITY; TRANSFORMATION; PRECIPITATION; RESISTANCE; EVOLUTION;
D O I：
10.1590/1980-5373-MR-2020-0408
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study aims at assessing the degree of susceptibility to intergranular corrosion of the UNS S31803 duplex stainless steel and the 0.4% Mo austenitic stainless steel through the double-loop electrochemical potentiodynamic reactivation (DL-EPR) test. Both steels were subjected to isothermal treatments at 650 degrees C and 900 degrees C in order to compare the effect of temperature on the respective degrees of sensitization. It was observed that the 0.4% Mo austenitic stainless steel presented a higher degree of sensitization and, consequently, a greater susceptibility to the intergranular corrosion process when compared to the UNS S31803 duplex stainless steel in the two temperatures studied. It was also observed that, for both steels, the heat treatment at 900 degrees C resulted in a higher degree of sensitization when compared to the heat treatment at 650 degrees C.
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页数：7
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