Effect of scanning strategy on texture formation in Ni-25 at.% Mo alloys fabricated by selective laser melting

Variations in the crystallographic texture in Ni-25 at.% Mo alloys fabricated by selective lasermelting with different scanning strategieswere designed for the first time. Single-crystalline-like texturewith a short-range order of Mo atoms can be produced via bidirectional scanning along one axis (X-scan) and bidirectional scanning with a 90 degrees rotation in each layer (XY-scan), while only fiber texture was formed in bidirectional scanning with a 67 degrees rotation (Rot-scan). The aligned crystal orientation along the build direction can be varied by the scanning strategy; < 001 > is preferred in the XY-and Rot-scan samples, while < 101 > is preferred in the X-scan sample. The controlling mechanisms of the texture, focusing on the preferential growth directions of the columnar cells and the following epitaxial growth, are discussed. (C) 2017 The Authors. Published by Elsevier Ltd.