|About this Abstract
||2nd International Conference on Technological Innovations in Metals Engineering (TIME)
||Technological Innovations in Metals Engineering (TIME)
||Novel Heat Treatment Technology for Increasing Impact Strength of Bulk Grey Cast Irons
||Igor Tkachenko, Kostyantin Tkachenko, Victoria Miroshnichenko
|On-Site Speaker (Planned)
Potentials of the existing heat treatment technologies in reaching the highest performance of modern irons and steels are limited due to impossibility to improve critical for the most cases, but typical microstructure features: - undesirable second phase morphology; - spacial nonuniformity; chemical inhomogenuity; robust matrix grain size. Typical illustration is provided by the industrial Grey Irons. Some effects of the developed heat treatment on the impact strength of bulk pearlitic Grey Irons are considered. Full decomposition of the pearlite matrix cementite; solving the original graphite plate like inclusions; formation of uniformly distributed fine graphite particles within the ferrite matrix are observed in optimally treated irons. Unprecedented increase of the impact resistance from KCU 65 kJ/m2. up to 520 kJ/m2 is also reached General character of the observed phenomena mechanisms is grounded for various polymorphic metallic materials. Necessity of further precise and deep investigations is emphasized.