Microstructures of Low Angle Boundaries of the Second Generation Single Crystal Superalloy DD6
2011 ◽
Vol 284-286
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pp. 1584-1587
Keyword(s):
The specimens of low angle boundaries were machined from the second generation single crystal superalloy DD6 blades. The microstructures of low angle boundaries (LAB) were investigated from three scales of dendrite, γ′ phase and atom with optical microscopy (OM), scanning electron microscope (SEM), transition electron microscope (TEM) and high resolution transmission electrion microscopy (HREM). The results showed that on the dendrite scale LAB is interdendrite district formed by three dimensional curved face between the adjacent dendrites. On the γ′ phase scale LAB is composed by a thin layer γ phase and its bilateral imperfect cube γ′ phase. On the atom scale LAB is made up of dislocations within several atom thickness.
2012 ◽
Vol 535-537
◽
pp. 1019-1022
1991 ◽
Vol 30
(Part 1, No. 9A)
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pp. 2112-2117
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1973 ◽
Vol 31
◽
pp. 302-303
1991 ◽
Vol 49
◽
pp. 478-479
1996 ◽
Vol 211
(6)
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1988 ◽
Vol 54
(507)
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pp. 2061-2068
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