Article ID Journal Published Year Pages File Type
1450552 Acta Materialia 2006 10 Pages PDF
Abstract

The mechanical data of novel alloys based on the pseudo-ternary system Ni3Al–Ni3Ti–Ni3V was assessed. This alloy system exhibits dual multi-phase microstructures and was described in part I of this paper [Acta Mater 2005:53]. The mechanical characterization was performed on as-cast and hot-worked material. The new alloys show extremely high yield stresses with good temperature retention, when compared with conventional nickel-based alloys. Over a broad temperature range fracture preferentially occurred along grain boundaries. The compressive creep test conducted at temperatures between 1150 and 1250 K showed the presence of threshold stress and also extremely low creep rates when compared with the conventional Ni-based superalloys with dispersed oxide particles. The obtained results are promising for the development of a new type of high-temperature structural material.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
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