|Comparison of low-cycle fatigue behaviors between two nickel-based single-crystal superalloys|
|P. Li; Q. Q. Li; T. Jin; Y. Z. Zhou; J. G. Li; X. F. Sun; Z. F. Zhang
|Source Publication||International Journal of Fatigue
|Abstract||The deformation mechanisms of nickel-base single-crystal superalloys containing 3 wt.% Re (3Re) and without Re (0Re) were systematically investigated in the temperature range from room temperature to 900 degrees C. At all testing temperatures, the alloy 3Re showed higher stress amplitudes and longer fatigue lives. With increasing temperature, slip mode gradually changes from planar to wavy slip. Dislocation climb and cross-slip, even by-passing became dominant deformation mechanisms of the two alloys and the addition of Re further reinforced this trend. In this process, the deformation homogenization became dominant, which resulted in the transition of cracking mode from shear fracture to normal fracture. At low temperature the specimen eventually cracks along the slip bands by shear, but at high temperature the specimen cracks by normal and shows mode I cracking. (C) 2014 Elsevier Ltd. All rights reserved.|
; li, q. q.
; zhang, z. f.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. [li, q. q.
; jin, t.
; zhou, y. z.
; li, j. g.
; sun, x. f.] chinese acad sci, inst met res, superalloy div, shenyang 110016, peoples r china.
; li, p (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, 72 wenhua rd, shenyang 110016, peoples r china.
High Temperature Low-cycle Fatigue (Lcf)
P. Li,Q. Q. Li,T. Jin,et al. Comparison of low-cycle fatigue behaviors between two nickel-based single-crystal superalloys[J]. International Journal of Fatigue,2014,63:137-144.
P. Li.,Q. Q. Li.,T. Jin.,Y. Z. Zhou.,J. G. Li.,...&Z. F. Zhang.(2014).Comparison of low-cycle fatigue behaviors between two nickel-based single-crystal superalloys.International Journal of Fatigue,63,137-144.
P. Li,et al."Comparison of low-cycle fatigue behaviors between two nickel-based single-crystal superalloys".International Journal of Fatigue 63(2014):137-144.
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