PT  - JOURNAL ARTICLE
AU  - Peković, Michal
AU  - Jirková, Hana
AU  - Rubešová, Kateřina
AU  - Janda, Tomáš
AU  - Bureš, Radovan
TI  - Microstructural Evolution in 42SiCr Steel in a High-Temperature Chamber Under Microscope Objective
DP  - 2020 Sep 7
TA  - Manufacturing Technology Journal
PG  - 355--360
VI  - 20
IP  - 3
AID - 10.21062/mft.2020.053
IS  - 12132489
AB  - Thanks to today's computer programs, engineers can derive a large amount of information from chemical com-position of a material. This information includes phase transformation temperatures Ac1, Ac3, Ms and Mf. CCT and TTT diagrams for austenite decomposition can be determined as well. When steel is heated, austenite grains nu-cleate and grow in the initial microstructure. On cooling, the grains decompose into pearlite, ferrite, cementite and hardening phases. Transformations of this kind are thoroughly described in literature: the ways the individual phases form and the speed of their formation and temperatures involved. However, in-situ visual recordings of such transformations are relatively rare. With Linkam TS1400XY high-temperature stage and chamber integrat-ed in an optical microscope, one can observe phase transformations in situ during heating and cooling. This paper explores microstructural evolution in 42SiCr steel in the course of heat treatment in a high-temperature chamber on an optical microscope stage which offers observation of changes in the material right under the microscope objective.