High-Temperature Wear Behavior of Laser-Cladding Stellite 6 Coating

Ting Yu; Zixiang Zhang; Xixin Rao; Jie Chen

doi:10.3788/LOP56.141403

Laser & Optoelectronics Progress, Volume. 56, Issue 14, 141403(2019)

High-Temperature Wear Behavior of Laser-Cladding Stellite 6 Coating

Ting Yu^*, Zixiang Zhang, Xixin Rao, and Jie Chen

Author Affiliations

School of Mechatronics Engineering, Nanchang University, Nanchang, Jiangxi 330031, China

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Figures & Tables(10)

Fig. 1. Macro morphology of laser-cladding Stellite 6 coating

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Fig. 2. Microstructures of Stellite 6 coating after heat treating at different temperatures. (a) RT; (b) 700 ℃; (c) 800 ℃; (d) 900 ℃

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Fig. 3. XRD analysis of Stellite 6 coating after heat treating at different temperatures

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Fig. 4. Effect of high temperature on microhardness

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Fig. 5. Wear loss of Stellite 6 coating at different temperatures with load of 90 N and rotational speed of 63 r/min

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Fig. 6. Surface morphologies of coating after high-temperature wear. (a) RT; (b) 600 ℃; (c) 700 ℃; (d) 800 ℃; (e) 900 ℃

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Fig. 7. Frictional coefficient as function of time for Stellite 6 coating at different temperatures

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Table 1. Mass fractions of elements in substrate and cladding materials%
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Table 1. Mass fractions of elements in substrate and cladding materials%
Element C Cr Si W Fe Mo Ni Co Mn
Stellite 6 1.15 29.00 1.10 4.00 3.00 1.00 3.00 Bal. 0.50
Substrate 0.08 20.00 1.00 - Bal. - 11.00 - 2.00

Table 2. Mass-fraction analysis of elements in eutectic structures before and after heat treating%
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Table 2. Mass-fraction analysis of elements in eutectic structures before and after heat treating%
Element Co Ni Cr Fe W Mn Si C Mo
RT 38.01 0.73 39.24 1.54 5.72 1.43 0.82 11.94 0.57
700 ℃ 42.24 1.18 40.76 1.75 5.24 1.65 0.58 6.36 0.25
800 ℃ 46.04 1.17 40.28 1.95 3.66 1.49 0.55 4.75 0.10
900 ℃ 50.22 1.25 36.05 2.07 2.99 1.29 0.67 5.24 0.22

Table 3. Mass fraction of elements in oxides on coating surface%

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Table 3. Mass fraction of elements in oxides on coating surface%

Element	Co	O	Ni	Cr	Fe	W	Mn	Si	C	Mo	Al
RT	52.95	5.62	2.23	26.49	5.39	2.48	1.26	0.67	2.46	0.28	0.17
600 ℃	38.30	32.87	1.32	18.30	4.93	2.32	0.75	0.72	-	0.19	0.29
700 ℃	42.15	33.07	-	18.50	3.08	1.69	0.79	-	-	0.42	0.30
800 ℃	43.79	33.11	0.30	16.79	2.89	2.23	0.59	-	-	0.13	0.17
900 ℃	38.77	34.93	1.54	19.08	3.85	-	0.66	0.93	-	0.24	-

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Ting Yu, Zixiang Zhang, Xixin Rao, Jie Chen. High-Temperature Wear Behavior of Laser-Cladding Stellite 6 Coating[J]. Laser & Optoelectronics Progress, 2019, 56(14): 141403

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