Article ID Journal Published Year Pages File Type
1449357 Acta Materialia 2008 9 Pages PDF
Abstract

This paper reports on experiments and modeling predictions of polycrystalline samples of a CuAlNi shape memory alloy. Samples were loaded in four-point bending and the induced pseudoelastic martensite plates that occurred at a notch tip were observed in situ. Based upon the specific crystallography of each sample, near notch stress fields were calculated from finite element analysis. Using the calculated stress field, an available work criterion predicted which interface formed around the notch and the location the interface initiated from. Good agreement between the experimentally observed deformation and the predicted deformation shows that the available work criterion is predictive for arbitrarily oriented crystals in a polycrystalline sample.

Related Topics
Physical Sciences and Engineering Materials Science Ceramics and Composites
Authors
, ,