Characterization of Original Position Statistical Distribution of Composition in Train Wheel Steel by Laser-Induced Breakdown Spectrum

Jia LIU; Xue-jing SHEN; Guan-zhen ZHANG; Fei-fei GUO; Dong-ling LI; Hai-zhou WANG

doi:10.3964/j.issn.1000-0593(2021)07-2269-06

Spectroscopy and Spectral Analysis, Volume. 41, Issue 7, 2269(2021)

Characterization of Original Position Statistical Distribution of Composition in Train Wheel Steel by Laser-Induced Breakdown Spectrum

Jia LIU^1、1;, Xue-jing SHEN^{1、1; 2;}, Guan-zhen ZHANG^3、3;, Fei-fei GUO^2、2;, Dong-ling LI^{1、1; 2;}, and Hai-zhou WANG^{1、1; *;}

Author Affiliations

¹1. Central Iron and Steel Research Institute, Beijing 100081, China

²2. NCS Testing Technology Corporation Limited, Beijing 100081, China

³3. Metals & Chemistry Research Institute, China of Railway Sciences Corporation Limited, Beijing 100081, China

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Figures & Tables(12)

Fig. 1. Schematic diagram of LIBSOPA system

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Fig. 2. Schematic diagram of the sample
(a): Schematic diagram of sample preparation; (b): Low times inspection sample; (c): LIBSOPA experimental sample

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Fig. 3. The low-times inspection
(a): Low times inspection drawing of rim section;(b): Local enlargment drawing of low times inspection

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Fig. 4. Relationship between different ablation pulses and spectral signal intensity

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Fig. 5. Relationship between different ablation pulses and spectral signal stability

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Fig. 6. Calibration curve of elements

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Fig. 7. Actual sample and scanning mode of wheel trerd

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Fig. 8. Two-dimensional component distribution map

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Fig. 9. Schematic diagram of statistical analysis of subregions

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Table 1. Reference material composition

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Table 1. Reference material composition

Element	Reference Material/%
Element	SRM1761a	SRM1762	SRM1763	SRM1765	SRM1766	SRM1767
Si	0.182	0.35	0.63	0.004	0.001	0.026
Mn	0.679	2	1.58	0.144	0.067	0.022
P	0.042	0.034	0.012	0.005 2	0.002	0.003 1
S	0.037	0.03	0.033	0.003 8	0.002 4	0.009
Cr	0.222	0.92	0.5	0.051	0.024	0.001 5
Ni	1.981	1.15	0.51	0.154	0.021	0.002
Mo	0.103	0.35	0.5	0.005	0.003 5	0.02
Cu	0.298	0.12	0.043	0.001 3	0.015	0.001 4
V	0.054	0.2	0.3	0.004	0.009	0.033

Table 2. Quantitative results of LIBSOPA
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Table 2. Quantitative results of LIBSOPA
Element Results of Spark source
optical emission
spectrum ω/% Results of
LIBSOPA 200
ω/%
Si 0.34 0.37
Mn 0.74 0.77
P 0.007 0.006 5
S 0.002 0.002 5
Cr 0.19 0.21
Ni 0.17 0.15
Mo 0.03 0.034
Cu 0.20 0.18
V 0.02 0.024

Table 3. Statistic segregation degree
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Table 3. Statistic segregation degree
Element Statistic segregation
degree of A Statistic segregation
degree of B
Si 0.047 2 0.056 3
Mn 0.039 5 0.053 6
P 0.2 0.248
S 0.58 0.731
Cr 0.043 9 0.057 8
Ni 0.023 7 0.029 5
Mo 0.125 0.164
Cu 0.033 8 0.043 2
V 0.1 0.134

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Jia LIU, Xue-jing SHEN, Guan-zhen ZHANG, Fei-fei GUO, Dong-ling LI, Hai-zhou WANG. Characterization of Original Position Statistical Distribution of Composition in Train Wheel Steel by Laser-Induced Breakdown Spectrum[J]. Spectroscopy and Spectral Analysis, 2021, 41(7): 2269

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