QUANTITATIVE MODELING OF SENSITIZATION DEVELOPMENT IN AUSTENITIC STAINLESS-STEEL

被引：0
|
作者：
BRUEMMER, SM
机构：
来源：
CORROSION | 1990年 / 46卷 / 09期
关键词：
CARBIDE NUCLEATION; CARBIDE PRECIPITATION; CHROMIUM DEPLETION; INTERGRANULAR CORROPSION; MODELING; SENSITIZATION; SENSITIZATION TESTING; STAINLESS STEEL; STRESS CORROSION CRACKING; 304; 316;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Existing capabilities to quantitatively model carbide precipitation and sensitization development in austenitic stainless steels are assessed and critically analyzed. A theoretically based, empirically modified model is described that predicts carbide nucleation kinetics, chromium depletion characteristics, and material degree of sensitization (DOS) as measured by the electrochemical potentiokinetic reactivation (EPR) test. Individual model components are validated by correlation to the available database including direct comparisons to grain-boundary chromium depletion. The model is shown to quantitatively predict isothermal sensitization development in a large number of commercial type 304 (UNS(1) S30400) and 316 (UNS S31600) stainless steel (SS) heats. This work represents a first step to evolve methods that realistically assess microstructural characteristics and structural reliability in stainless steel components and weldments.
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页码：699 / 709
页数：11
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