FRACTURE OF NI-BASED VZH175 SUPERALLOY UNDER STRAIN LOW CYCLE FATIGUE TESTS
Investigation of fracture character of specimens of Ni-based VZH175 superalloy tested under low cyclic fatigue (LCF) at the set total deformation of a cycle was carried out. The nature of destruction of specimens was investigated on specimens tested at two temperatures, different strain amplitude and number of cycles. The nature of destruction of specimens was investigated by SEM TESCAN VEGA// <sub>SB</sub>. At 20°С fractured surface has a character of rough, ductile failure. At 650°С was observing mixed character of fracturing ductile and quasi-brittle.