Deformation twinning during high temperature compression tests of the Ni-base superalloy ATI 718Plus®
نویسندگان
چکیده
This study discusses the deformation mechanisms active during high temperature compression tests of Ni-base superalloy ATI 718Plus®. Deformation twins were observed in deformed grains across a range temperatures and strain rates by use transmission electron microscopes (TEM). Even at as low 0.01 s?1 up to 1025?C microstructure contained which twinning. It was concluded that stacking fault energy alloy, measured be 15mJm?2 caused formation twins. In addition, several examples early stages twin captured. The twinning partials most cases emitted from grain boundaries. second instance cross-slip events Frank-Read source lead formed faults.
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ژورنال
عنوان ژورنال: Acta Materialia
سال: 2022
ISSN: ['1873-2453', '1359-6454']
DOI: https://doi.org/10.1016/j.actamat.2019.12.047