Local characterization of austenite and ferrite phases in duplex stainless steel using MFM and nanoindentation

Karim Raafat Gadelrab*, Guang Li, Matteo Chiesa, Tewfik Souier

*المؤلف المقابل لهذا العمل

نتاج البحث: المساهمة في مجلةArticleمراجعة النظراء

62 اقتباسات (Scopus)

ملخص

The local mechanical properties of ferritic and austenitic domains in a duplex stainless steel are locally studied by nanoindentation. The elastic and plastic properties of the two phases are determined. Without any specific surface treatment (chemical or electrochemical), the austenitic and ferritic domains present in the duplex stainless steel are distinguished using magnetic force microscopy. The magnetic scans allow nanoindentation results to be assigned to the respective phase, yielding the local mechanical properties of the duplex steel. The magnetic scans also show a sharp transition between the phases that is maintained even inside indentations. The ferrite phase is found to supersede austenite in the elastic modulus, hardness, and strain-hardening exponent, while both phases possess similar yield strength. Interface properties are a weighted average of the phase properties.

اللغة الأصليةEnglish
الصفحات (من إلى)1573-1579
عدد الصفحات7
دوريةJournal of Materials Research
مستوى الصوت27
رقم الإصدار12
المعرِّفات الرقمية للأشياء
حالة النشرPublished - يونيو 28 2012
منشور خارجيًانعم

ASJC Scopus subject areas

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