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07477 Electrochemical and SCC Behavior of Highly Alloyed Austenitic Stainless Steels in Different Chloride Containing Media

Picture for 07477 Electrochemical and SCC Behavior of Highly Alloyed Austenitic Stainless Steels in Different Ch
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Product Number: 51300-07477-SG
ISBN: 07477 2007 CP
Author: Stefan Holzleitner, Sabine Eglsaer, Gregor K. Mori, and Hubert Falk
Publication Date: 2007
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Potentiodynamic measurements, Slow Strain Rate Tests (SSRT) and Constant Load Tests (CLT) were executed on austenitic stainless steels to investigate chloride induced stress corrosion cracking (CISCC). Tests were conducted in boiling 43 wt% calcium chloride (CaCl2) and 45 wt% magnesium chloride (MgCl2) solutions. For the tests one CrNiMo and five CrMnN were chosen. To get mechanical reference values glycerin was used at SSR test as inert medium. Additionally influences of chloride concentration and temperature were investigated in potentiodynamic measurements and slow strain rate tests on the highly alloyed CrNiMo steel. All tests were conducted under atmosphere conditions. The variation of nickel content among the CrMnN steels showed no influence in time to failure. The comparison between manganese and nickel austenitic steels in time to failure showed, that Ni-stabilized austenitic steels do have a 10 to 100 times higher time to failure than Mn-stabilized steels if CISCC is induced.
Potentiodynamic measurements, Slow Strain Rate Tests (SSRT) and Constant Load Tests (CLT) were executed on austenitic stainless steels to investigate chloride induced stress corrosion cracking (CISCC). Tests were conducted in boiling 43 wt% calcium chloride (CaCl2) and 45 wt% magnesium chloride (MgCl2) solutions. For the tests one CrNiMo and five CrMnN were chosen. To get mechanical reference values glycerin was used at SSR test as inert medium. Additionally influences of chloride concentration and temperature were investigated in potentiodynamic measurements and slow strain rate tests on the highly alloyed CrNiMo steel. All tests were conducted under atmosphere conditions. The variation of nickel content among the CrMnN steels showed no influence in time to failure. The comparison between manganese and nickel austenitic steels in time to failure showed, that Ni-stabilized austenitic steels do have a 10 to 100 times higher time to failure than Mn-stabilized steels if CISCC is induced.
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