발간논문

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Vol.20, No.1, 32 ~ 40, 1982
Title
Creep - rupture Behavior of Mechanically alloyed Ni - Base superalloy ( MA6000E )
김영길Y . G . KIm, H . F . MerrickH . F . Merrick
Abstract
An advanced Ni-base superalloy, MA6000E, combining both gamma prime and oxide dispersion strengthening has been developed by using mechanical alloying process at INCO. The nominal composition of the alloy is Ni-15Cr-2Mo-4W-4.5Al-2.5Ti-2Ta-0.15Zr-0.05C-0.01B-1.1Y₂O₃. The 100 hours rupture strength at 1093℃ of the alloy (165 MPa) is about three times higher than that of the best conventional superalloy. Creep stress exponent at 1093℃ is about 40, and the apparent creep activation energy is about 160 ㎉/mole at intermediate temperature. Stress-rupture properties are not degraded significantly after thermal cycling.
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