Journal
ADVANCED ENGINEERING MATERIALS
Volume 13, Issue 4, Pages 296-300Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adem.201000232
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A novel strategy for designing advanced engineering superalloys using twin structure is presented. By inducing numerous annealing and deformation twins, a new advanced polycrystalline Ni-Co-base superalloy (TMW-4M3 alloy) has been developed, which has low stacking fault energy, enhanced tensile and creep strength without degrading other mechanical properties such as low cycle fatigue and crack growth resistance. Based on TEM analysis, the twin strengthening mechanism is proposed.
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