A neutron-diffraction study of the low-cycle fatigue behavior of HASTELLOY® C-22HSTM alloy

✍ Scribed by E.-Wen Huang; Bjørn Clausen; Yandong Wang; Hahn Choo; Peter K. Liaw; Michael L. Benson; Lee M. Pike; Dwaine L. Klarstrom

• Publisher: Elsevier Science
• Year: 2007
• Tongue: English
• Weight: 772 KB
• Volume: 29
• Category: Article
• ISSN: 0142-1123
• DOI: 10.1016/j.ijfatigue.2007.01.025

✦ Synopsis

The HASTELLOY Ò 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 De = 2% and a strain ratio of R = À1 (R = e min /e max , where e min and e 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.