A neutron-diffraction study of the low-cycle fatigue behavior of HASTELLOY (R) C-22HS (TM) alloy

作者：Huang E Wen^*; Clausen Bjorn; Wang Yandong; Choo Hahn; Liaw Peter K; Benson Michael L; Pike Lee M; Klarstrom Dwaine L

来源：International Journal of Fatigue, 2007, 29(9-11): 1812-1819.

DOI：10.1016/j.ijfatigue.2007.01.025

• low-cycle fatigue
• in situ neutron diffraction
• cyclic hardening
• cyclic softening

The HASTELLOY (R) C-22HS (TM) alloy is a face-centered cubic (fcc), nickel-based, corrosion-resistant superalloy. In the present study, the low-cycle-fatigue behaviors of the alloy were examined by in situ neutron diffraction at room temperature. The fatigue parameters included a total strain range of Delta epsilon=2% and a strain ratio of R = -1 (R = epsilon(min)/epsilon(max), where epsilon(min) in and epsilon(max) are the applied minimum and maximum strains, respectively). The effect of cyclic deformation on the lattice strains was studied as a function of cyclic straining. The cyclic hardening and softening behaviors during fatigue is discussed in light of the relationship between the peak widths and lattice strains.

• 出版日期2007-11
• 单位Los Alamos