Hao-yue JIA, Gu-qing GUO, Fu-qiang ZHAO, Yong HU, Chuan-liang LI. Investigation on Hardness of D2 Steel Based on Laser-Induced Breakdown Spectroscopy[J]. Spectroscopy and Spectral Analysis, 2020, 40(12): 3895
- Spectroscopy and Spectral Analysis
- Vol. 40, Issue 12, 3895 (2020)
Fig. 1. The microstructure of 6 samples for group 1
(a): Martensite in as-cast; (b): Pearlite+ferrite; (c): Martensite in quenching; (d): Martensite in tempering; (e): Tempered troostite+tempering
(a): Martensite in as-cast; (b): Pearlite+ferrite; (c): Martensite in quenching; (d): Martensite in tempering; (e): Tempered troostite+tempering
Fig. 2. The experimental setup of LIBS for the detection of D2 steel
Fig. 3. Typical LIBS spectrum of sample 1
Fig. 4. Spectral line intensities of Fe, Mn element for 6 samples
Fig. 5. Spectral line intensities of Fe, Mn elements for 6 samples versus hardness
Fig. 6. Ferrum Ionic to atomic intensity ratio versus the surface hardness of D2 steel
Fig. 7. Boltzmann plots of the studied samples
Fig. 8. Plasma excitation temperatures versus sample hardness
Fig. 9. The hardness and LIBS spectrum versus different increment of manganese samples
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Table 1. Main chemical compositions of D2 steel(wt. %)
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Table 2. Microstructure and hardness of experimental samples for group 1(HRC)
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Table 3. Five samples with different content of manganese and their hardness respectivelyzz
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Table 4. Atomic and ionic spectral lines of the analyzed elements
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