Cyclic crack growth behavior under repeated thermal shock in cemented carbides : Comparison with those under mechanical fatigue tests
Details
Repeated thermal shock tests were performed using cemented carbides with two different WC grain sizes to study a cyclic crack growth behavior. The results were compared with those obtained by a rotating bending fatigue tests (stress ratio=-1) as well as pulsating fatigue tests in tension at stress ratio of 0.1. The cyclic growth rates under the repeated thermal shock correspond well with those obtained by a rotating bending fatigue tests, however they are faster than those of the pulsating fatigue.
