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The Evaluation of Structure – Property Relationships in the Dual Matrix Ductile Iron by Magnetic Barkhausen Noise Analysis

By C. Hakan Gür, Melika Ozer and Mehmet Erdogan

Abstract

Structure-property relationships in ferritic ductile iron with a dual-matrix (ferrite, martensite) structure were evaluated by Magnetic Barkhausen Noise (MBN) analysis. Specimens were partially austenitised in the ferrite-austenite region at 795°C and 815°C for 20 minutes, and then quenched in 100ºC-oil to obtain different phase contents. The specimens were subjected to tempering at 500ºC for 1 and 3 h. The results showed that the volume fraction of phases can be controlled to modify the mechanical properties, and any change in the microstructure can be monitored by MBN. Keywords: Dual-matrix ductile iron, Microstructure, Magnetic Barkhausen Noise.

Year: 2012
OAI identifier: oai:CiteSeerX.psu:10.1.1.216.5526
Provided by: CiteSeerX

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