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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. WatanabeLaboratory 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.
© EDP Sciences 2000