Title of article :
A new approach to strengthen grain boundaries for creep improvement of a Ni–Cr–Co–Mo superalloy at 950 °C
Author/Authors :
Lee، نويسنده , , J.W. and Kim، نويسنده , , D.J. and Hong، نويسنده , , H.U.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2015
Abstract :
Damage-tolerant microstructure containing serrated grain boundaries (GBs) has been developed in a solid-solution-strengthened Ni–Cr–Co–Mo superalloy by proprietary thermomechanical treatment. The creep life was found to be 2.8 times longer by mitigation of GB cavitational damage. The factors affecting creep properties at 950 °C are discussed in terms of GB strengthening.
Keywords :
Grain boundaries , Electron microscopy , nickel based superalloys , thermomechanical processing , Dislocations , Creep
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
Journal title :
MATERIALS SCIENCE & ENGINEERING: A
