Comments on 'Selective evolution of secondary gamma ' precipitation in a Ni-based single crystal superalloy both in the gamma matrix and at the dislocation nodes'

abstract

• 2016 Elsevier Ltd. In a recent paper, Sisi Xiang & al. [Acta Materialia 116 (2016) 343] studied microstructure evolutions of precipitates during creep of a Ni-based single crystal superalloy, with a special focus on hyperfine particles nucleating in the matrix channels. This paper is misleading, claiming that hyperfine particles nucleate during high temperature creep exposure at 1100C. The aim of the present comments is to reconsider these results based on the available literature on hyperfine particles nucleation mechanisms and subsequent morphological evolutions at high temperature.

authors

• Le Graverend, Jean-Briac

published proceedings

• SCRIPTA MATERIALIA

altmetric score

• 2.1

author list (cited authors)

• Cormier, J., Caccuri, V., le Graverend, J., & Villechaise, P.

citation count

• 5

complete list of authors

• Cormier, Jonathan||Caccuri, Vincenzo||le Graverend, Jean-Briac||Villechaise, Patrick

publication date

• January 2017

publisher

• Elsevier  Publisher

published in

• Scripta Materialia  Journal

keywords

• Creep
• Hyperfine Gamma ' Precipitation
• Ni-based Single Crystal Superalloys

Digital Object Identifier (DOI)

• 10.1016/j.scriptamat.2016.10.012

start page

• 100

end page

• 103

volume

• 129

URL

• http://dx.doi.org/10.1016/j.scriptamat.2016.10.012