Investigation of the Effect of Small Hardening Spots Created on the Sample Surface by Laser Complex with Solid-State Laser

4th International Conference on Advanced Engineering and Technology

Nozdrina, O.^1 ; Zykov, I.^1 ; Melnikov, A.^1 ; Tsipilev, V.^1 ; Turanov, S.^1

Tomsk Polytechnic University, Tomsk, Russia^1

关键词: Deformation and strength;    Laser treatment;    Plastic property;    Sample surface;    Steel samples;    Surface inhomogeneity;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/317/1/012002/pdf
DOI  :  10.1088/1757-899X/317/1/012002

来源: IOP

【 摘 要 】

This paper describes the results of an investigation of the effect of small hardening spots (about 1 mm) created on the surface of a sample by laser complex with solid-state laser. The melted area of the steel sample is not exceed 5%. Steel microhardness change in the region subjected to laser treatment is studied. Also there is a graph of the deformation of samples dependence on the tension. As a result, the yield plateau and plastic properties changes were detected. The flow line was tracked in the series of speckle photographs. As a result we can see how mm surface inhomogeneity can influence on the deformation and strength properties of steel.