Effect of Sub-Micron TiC/B<sub>4</sub>C Particle on Microstructures and Properties of Laser Cladded Stellite Coatings

Shanshan He; Zhishui Yu; Peilei Zhang; Mingchuan Li; Hua Yan; Shaowei Li

doi:10.3788/CJL201946.0302010

Chinese Journal of Lasers, Volume. 46, Issue 3, 0302010(2019)

Effect of Sub-Micron TiC/B₄C Particle on Microstructures and Properties of Laser Cladded Stellite Coatings

Shanshan He^1,2、*, Zhishui Yu^1,2、*, Peilei Zhang^1,2、*, Mingchuan Li^1,2, Hua Yan^1,2, and Shaowei Li^1,2

Author Affiliations

¹ School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China

² Shanghai Collaborative Innovation Center of Laser Advanced Manufacturing Technology, Shanghai 201620, China

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Figures & Tables(10)

Fig. 1. XRD test results of five coatings

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Fig. 2. BSE micro-morphology of cladding coating. (a) Stellite 12; (b) Stellite 12+2%Ti/B4C; (c) Stellite 12+4%Ti/B4C; (d) Stellite 12+6%Ti/B4C; (e) Stellite 12+8%Ti/B4C

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Fig. 3. BSE morphology of typical microstructure of coating. (a) Stellite 12; (b) Stellite 12+6%Ti/B4C

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Fig. 4. SEM-EDS surface scanning results of Stellite 12+6%Ti/B4C coating. (a) Typical morphology; (b) surface scanning results

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Fig. 5. Frequency count distribution of particle phase size. (a) Stellite 12+2%Ti/B4C; (b) Stellite 12+4%Ti/B4C; (c) Stellite 12+6%Ti/B4C; (d) Stellite 12+8%Ti/B4C

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Fig. 6. Micro-hardness curves of coating

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Fig. 7. Wear resistance comparison between 304 stainless steel substrate and cladding coating

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Fig. 8. SEM morphologies of coatings after dry sliding friction and wear. (a) 304 stainless steel substrate; (b) Stellite 12; (c) Stellite 12+4%Ti/B4C; (d) Stellite 12+8%Ti/B4C

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Table 1. Chemical compositions of Stellite 12 powder (mass fraction, %)
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Table 1. Chemical compositions of Stellite 12 powder (mass fraction, %)
C Cr Fe Mn Mo Ni Si W Co
1.34 30.43 1.99 0.11 0.14 2.34 1.27 7.92 Bal.

Table 2. EDS test results at different areas of coatings (atomic fraction, %)

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Table 2. EDS test results at different areas of coatings (atomic fraction, %)

Zone	Co	Cr	W	Ni	Ti	B	C	Fe
Dendrite	47.42	25.56	3.53	4.14	-	-	2.94	13.39
Inter-dendritic	43.78	30.80	3.51	3.18	-	-	3.01	12.68
Ⅰ	27.76	25.22	2.86	5.21	1.23	-	3.41	28.46
Ⅱ	28.77	21.57	2.88	4.76	1.01	-	4.70	30.30
Ⅲ	2.63	4.20	0.39	0.44	0.09	87.25	1.45	2.91

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Shanshan He, Zhishui Yu, Peilei Zhang, Mingchuan Li, Hua Yan, Shaowei Li. Effect of Sub-Micron TiC/B₄C Particle on Microstructures and Properties of Laser Cladded Stellite Coatings[J]. Chinese Journal of Lasers, 2019, 46(3): 0302010

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