Investigation of the effect of cyclic laser heating for creating dispersed structures in the austenitic-martensitic alloys based on Fe-Cr-Ni system

2nd Conference on Plasma & Laser Research and Technologies

Andreev, A.O.^1 ; Mironov, V.D.^1 ; Petrovskii, V.N.^1 ; Orlov, A.V.^1 ; Libman, M.A.^2

National Research Nuclear University, MIPhI, Moscow, Russia^1

FGUP, TsNIIchermet Im. I. P. Bardina, Moscow, Russia^2

关键词: Austenitic;    Dispersed structure;    High-strength characteristics;    Martensitic alloys;    Multiple lasers;    Strength characteristics;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/747/1/012052/pdf
DOI  :  10.1088/1742-6596/747/1/012052

来源: IOP

【 摘 要 】

The effect of cyclic laser heating on the formation of the austenite structure in the austenitic-martensitic alloys based on Fe-Cr-Ni system is investigated. It is shown that under the influence of ultra-fast laser heating on the martensite, which was formed during plastic deformation, the reverse martensitic transformation occurs, and austenite with high strength characteristics is formed. Repeated and multiple laser heating effectively grinds areas of austenite to a size close to the large nanoparticles. There is an additional increase in the strength characteristics of austenite as a result of this fragmentation.