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Orientation relationship, texture and microstructure in electromagnetic processed materials (EPM)

journal contribution
posted on 2008-01-01, 00:00 authored by Y Zhang, C Esling, Daoyong Cong, X Zhao, L Zuo
In this work, some of our recent results in microstructure, texture and orientation relationship resulting from the application of an external high magnetic field during diffusional and non-diffusional phase transformation in both steel and functional metallic materials have been summarized. A 12-T magnetic field was applied to the diffusional decomposition of austenite in 0.81C-Fe alloy and martensitic transformation of a Ni-Mn-Ga magnetic shape memory alloy. For the 0.81C-Fe alloy, it was found that the magnetic field induces the formation of proeutectoid ferrite and slightly enhances the <001> fiber component in ferrite in the transverse field direction. The magnetic dipolar interaction between Fe atoms in the transverse field direction accounts for this phenomenon. The magnetic field favors the formation of pearlite with Pitsch-Petch 2 (P-P 2) and Isaichev (IS) orientation relationships (OR) between the lamellar ferrite and cementite. For the Ni-Mn-Ga magnetic shape memory alloy, the magnetic field makes the martensite lamellas to grow in some specific directions with their c-axes [001] orientated to the field direction and transverse field direction.

History

Journal

Archives of metallurgy and materials

Volume

53

Issue

1

Pagination

17 - 23

Publisher

Akademia Gorniczo-Hutnicza im. Stanislawa Staszica

Location

Krakow, Poland

ISSN

1733-3490

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

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