EDP Sciences Journals List
Issue J. Phys. IV France
Volume 10, Number PR6, April 2000
The Sixth Japan-France Materials Science Seminar
JFMSS-6
Microstructural Design for Improved Mechanical Behaviour of Advanced Materials
Page(s) Pr6-41 - Pr6-46
DOI http://dx.doi.org/10.1051/jp4:2000608

The Sixth Japan-France Materials Science Seminar
JFMSS-6
Microstructural Design for Improved Mechanical Behaviour of Advanced Materials

J. Phys. IV France 10 (2000) Pr6-41-Pr6-46

DOI: 10.1051/jp4:2000608

Grain boundary engineering for high performance structural and functional materials

T. Watanabe

Laboratory of Materials Design and Interface Engineering, Department of Machine Intelligence and Systems Engineering, Graduate School of Engineering, Tohoku University, 980-8579, Japan


Abstract
Recent progress in grain boundary engineering is discussed focussing on several key issues associated with development of high performance structural and functional materials. The control of intergranular brittleness has been found to be generally applicable by the introduction of a higher fraction of fracture-resistant special boundaries like low-∑ boundaries and by the reduction of the fraction of weak random boundaries. The most recent achievement of the control of oxidation-induced intergranular brittleness in a Ni-40at.%Fe alloy and of the development of a high performance ferromagnetic shape-memory Fe-30at.%Pd alloy by grain boundary engineering, has been introduced.



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