Specimen

SASS

experimental

(specimen 1, annealed)

FSSF

experimental

(specimen 5 heated at 430˚C for 5 min)

SDSSF

experimental

(specimen 13, heated at 500˚C for 59 min)

SDSSF

calculated

Microstructure

×400 equiaxed grains

No secondary precipitates

Grain size close

×400 equiaxed grains

Secondary precipitates

Grain size close

×200 arrayed grains

Secondary precipitates

Grain size close

-

Phases

Grains: g-phase

Grains: a-phase

Precipitates: a’-phase

Grains: g-phase, a-phase

Precipitates: a’-phase in a-grains

-

Toughness

(impact)

=25 J

=22.3 J

=27 J

=0.5 × (25 + 22.3)

= 23.6 J

with 12% deviation

CWL

=Zero mg/cm²

=28.8082 mg/cm²

0.0751 mg/cm²

= 0.5 × (0 + 28.8082)

= 14.4041 mg/cm²

with 100 % deviation