The crack initiation and growth behavior of Ni-based heat-resisting alloy was investigated in a vacuum environment at 1073 K using double edge notch test specimens, with varying holding times T//h at maximum stress during the cycle. The results showed that the crack growth rate could be evaluated by the C*-integral because of the good correspondence of the crack growth rate and the notch opening displacement rate; however, the crack growth rate did not correspond to the deformation of the test specimen in the other range of T//h. Relative notch opening displacement at the crack initiation, RNOD//C, indicated almost constant value and agreed with the results of SUS 304 stainless steel, except for the fatigue region.
|Number of pages||4|
|Journal||Nippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A|
|Publication status||Published - 1986 May|
ASJC Scopus subject areas
- Mechanical Engineering