Mechanical twinning in Ni-based single crystal superalloys during multiaxial creep at 1050 degrees C Academic Article

abstract

• 2018 Elsevier B.V. Multiaxial high-temperature creep tests have been performed at 1050 C on a first-generation Ni-based single-crystal superalloy through the use of asymmetric notched specimens. Mechanical twins have been observed by EBSD and TEM analyses. A finite element simulation in a crystal plasticity framework has also been carried out to better understand the presence of mechanical twins at stress concentrators depending on stress triaxiality, plastic strain rate, and damage level.

authors

• Le Graverend, Jean-Briac

published proceedings

• MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

author list (cited authors)

• le Graverend, J., Pettinari-Sturmel, F., Cormier, J., Hantcherli, M., Villechaise, P., & Douin, J.

citation count

• 22

complete list of authors

• le Graverend, Jean-Briac||Pettinari-Sturmel, Florence||Cormier, Jonathan||Hantcherli, Muriel||Villechaise, Patrick||Douin, Joel

publication date

• January 2018

publisher

• Elsevier  Publisher

published in

• Materials Science & Engineering: A  Journal

keywords

• Creep
• Deformation Mechanism
• High Temperature
• Mechanical Twinning
• Nickel Base Single Crystal Superalloy

Digital Object Identifier (DOI)

• 10.1016/j.msea.2018.02.086

start page

• 76

end page

• 87

volume

• 722

URL

• http://dx.doi.org/10.1016/j.msea.2018.02.086