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Information × Registration Number 0202U006400, 0199U002752 , R & D reports Title Effect of pulse treatment on martensitic transformations characteristics and structural state of surface layers of metastable alloys popup.stage_title Head Danilchenko Vitaliy Efimovich, Registration Date 23-07-2002 Organization Institute for metal physics NAS Ukkraine popup.description2 It is experimentally established, that the structural-and-phase state of electrospark coverings on steel C7 essentially differs from a state of an alloyed electrode T15K6 owing to complete dissociation of WC-carbide on half-carbide W2C and pure W, and owing to interaction of products of erosion with elements of interelectrode environment (carbon, nitrogen and oxygen), and also at the expense of mutual diffusion of elements of a covering and substrate. In phase components during the formation of a covering there were residual stresses of different magnitude and marks. During electroerosive processing of cobalt in mineral oil a Co-C solid solution was formed with bcc lattice, hdp-cobalt and not identified phase. The pulse laser heating initiated disintegration of a carbom solid solution in cobalt alloys. The laser heating of monocrystals of low-carbon steel resulted in them recrystallization with formation of polycrystalline a-phase with parameter of a vcc lattice, which corresponds to initial, and monocrystal y-phase with increased parameter of a lattice. The character of distribution of residual stresses after laser processing correlated with changes of microhardness and dislocations density. Product Description popup.authors popup.nrat_date 2020-04-02 Close