Abstract
The regularities of high-temperature fatigue in heat-resistant nickel alloy EI607A under full-time conditions (for 22 773, 25 778, 80 000, 95 223, 105 227, 109 594 hours) have been investigated. The regularities of material degradation with increasing service life, accompanied by the occurrence of heterogeneity in the distribution of microhardness, the manifestation of the hardening and softening effects in the thermally loaded zone, as well as microbrittleness, which contribute to reducing the survivability of the alloy, were established.
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