TY - JOUR
T1 - Effects of microstructure on long and short crack growth in nickel base superalloys
AU - Brown, C.W.
AU - King, J.E.
AU - Hicks, M.A.
PY - 1984/7
Y1 - 1984/7
N2 - The use of engineering materials in critical applications necessitates the accurate prediction of component lifetime for inspection and renewal purposes. In fatigue limited situations, it is necessary to be able to predict the growth rates of cracks from initiation at a defect through to final fracture. To this end, fatigue crack growth data are presented for different microstructures of typical nickel base superalloys used in gas turbine engines. Crack growth behaviour throughout the life history of the crack, i.e. from the short crack through to the long crack propagation regime, is described for each microstructural condition and discussed in terms of current theories of fatigue crack propagation.
AB - The use of engineering materials in critical applications necessitates the accurate prediction of component lifetime for inspection and renewal purposes. In fatigue limited situations, it is necessary to be able to predict the growth rates of cracks from initiation at a defect through to final fracture. To this end, fatigue crack growth data are presented for different microstructures of typical nickel base superalloys used in gas turbine engines. Crack growth behaviour throughout the life history of the crack, i.e. from the short crack through to the long crack propagation regime, is described for each microstructural condition and discussed in terms of current theories of fatigue crack propagation.
KW - jet and turbine aircraft engines
KW - microstructures nickel metallography
KW - nickel chromium cobalt molybdenum alloys
UR - http://www.scopus.com/inward/record.url?scp=0021468813&partnerID=8YFLogxK
UR - http://www.maneyonline.com/doi/abs/10.1179/030634584790419881
U2 - 10.1179/030634584790419881
DO - 10.1179/030634584790419881
M3 - Article
SN - 0306-3453
VL - 18
SP - 374
EP - 380
JO - Metal Science
JF - Metal Science
IS - 7
ER -