Premium
Scanning electron microscopy and transmission electron microscopy study of hot‐deformed γ‐TiAl‐based alloy microstructure
Author(s) -
CHRAPOŃSKI J.,
RODAK K.
Publication year - 2006
Publication title -
journal of microscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.569
H-Index - 111
eISSN - 1365-2818
pISSN - 0022-2720
DOI - 10.1111/j.1365-2818.2006.01660.x
Subject(s) - microstructure , transmission electron microscopy , materials science , scanning electron microscope , alloy , optical microscope , microscopy , recrystallization (geology) , electron microscope , metallurgy , dislocation , scanning transmission electron microscopy , crystallography , composite material , chemistry , optics , nanotechnology , physics , paleontology , biology
Summary The aim of this work was to assess the changes in the microstructure of hot‐deformed specimens made of alloys containing 46–50 at.% Al, 2 at.% Cr and 2 at.% Nb (and alloying additions such as carbon and boron) with the aid of scanning electron microscopy and transmission electron microscopy techniques. After homogenization and heat treatment performed in order to make diverse lamellae thickness, the specimens were compressed at 1000 °C. Transmission electron microscopy examinations of specimens after the compression test revealed the presence of heavily deformed areas with a high density of dislocation. Deformation twins were also observed. Dynamically recrystallized grains were revealed. For alloys no. 2 and no. 3, the recovery and recrystallization processes were more extensive than for alloy no. 1.