The study of TRIP effect in an austenitic stainless steel AISI 304

• Autorzy: Lischka F. T. , de Oliveira C. A. S.
• Języki publikacji: EN

Abstrakty

EN

Purpose: This study investigated the deformation effect in variation of α′-martensite volume fraction and its microstructural characteristics in an austenitic stainless steel AISI 304. Design/methodology/approach: The study was fulfilled through magnetic analysis with Vibrating Sample Magnetometer (VSM) and transmission electron microscopy (TEM). Findings: The presence of austenite, ε-martensite and α′, and that the nucleation of ε-martensite occurs in stacking faults, grain boundaries and accumulated dislocations in grain boundaries. Already α′-martensite nucleates in stacking faults, twinning edges, deformation bands and mechanical twinning. In addition, the magnetic martensite takes shape directly from the austenite. Research limitations/implications: A suggestion for future research is to increase the number of samples for deformations larger than 0.30 equivalent strain, due to the significative percentage of α′-martensite from this strain. Practical implications: A crescent parabolic behavior in relation between percentage of α′-martensite and equivalent deformation was observed by VSM. The increase of equivalent deformation increases the austenite transformation in α′-martensite. Originality/value: The behavior in relation between percentage of α′-martensite and equivalent deformation, and the study of α′-martensite nucleation.

Słowa kluczowe

EN

AISI 304; austenitic stainless steel; TRIP effect; martensite; formability

PL

AISI 304; stal austenityczna nierdzewna; efekt TRIP; martenzyt; plastyczność

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2015
• Tom: Vol. 71, nr 1
• Strony: 34--38
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Lischka F. T.

• Universidade Federal de Santa Catarina, Campus Reitor João David Ferreira Lima; Florianópolis; Santa Catarina; Brasil CEP: 88040-900

autor

de Oliveira C. A. S.

• Universidade Federal de Santa Catarina, Campus Reitor João David Ferreira Lima; Florianópolis; Santa Catarina; Brasil CEP: 88040-900

Bibliografia

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