Characterization of hardness for GCr15 steel based on laser-induced breakdown spectroscopy

doi:10.13251/j.issn.0254-6051.2022.01.048

Abstract

Abstract: Spectral stability, characteristic line intensity, plasma temperature and electron density of GCr15 steel after tempering at different temperatures were analyzed by using laser-induced breakdown spectroscopy method, and the relationships between characteristic line intensity ratio, plasma temperature and hardness were studied. The results show that the spectral and plasma characteristics of the specimens tempered at different temperatures are different, however, with the increase of tempering temperature, the atomic spectral line intensity increases, while the ion spectral line intensity decreases. Meanwhile, The characteristic line intensity ratio and plasma temperature have good positive correlation with the hardness of the specimens, which shows that the hardness of the GCr15 steel after heat treatment can be measured by laser-induced breakdown spectroscopy method.

Key words: laser-induced breakdown spectroscopy, heat treatment, spectral analysis, plasma temperature, GCr15 steel

CLC Number:

TG142.1

Li Zhu, Zhang Qingyong, Kong Linghua, Lian Guofu, Yang Jinwei. Characterization of hardness for GCr15 steel based on laser-induced breakdown spectroscopy[J]. Heat Treatment of Metals, 2022, 47(1): 284-289.

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