The unique failure behavior of Ni–Mo–Cr-Gd superalloy during hot compression at ultrahigh temperatures
The unique failure behavior of the Ni–Mo–Cr-Gd superalloy deformed at 0.01 s− 1 and 0.5
strain with ultra-high temperatures has been investigated. The samples compressed at 0.01
s− 1 and 0.5 strain are severely cracked at 1230° C, and almost completely crushed at
1250° C. The microstructure observations show that the divorced γ/Ni 5 Gd eutectic phase
transforms into the lamellar γ/Ni 5 Gd eutectic phase, and the Ni 5 Gd phase disappears in
the center of samples, especially at 1250° C. Here, the eutectic transformation is attributed to …
strain with ultra-high temperatures has been investigated. The samples compressed at 0.01
s− 1 and 0.5 strain are severely cracked at 1230° C, and almost completely crushed at
1250° C. The microstructure observations show that the divorced γ/Ni 5 Gd eutectic phase
transforms into the lamellar γ/Ni 5 Gd eutectic phase, and the Ni 5 Gd phase disappears in
the center of samples, especially at 1250° C. Here, the eutectic transformation is attributed to …
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