Microstructure and Cavitation-Erosion Mechanism of Laser Cladding NiCrSiB Coating on CrNiMo Stainless Steel

Abstract:

Article Preview

A Ni-based alloy NiCrSiB laser cladding layer was made on the surface of CrNiMo stainless steel specimens using NiCrSiB powder. Cavitation erosion behavior of the laser cladding layer and the CrNiMo stainless steel was investigated by ultrasonic vibration cavitation erosion equipment The results shown that laser cladding layer has dense microstructure and has metallurgical combination with CrNiMo stainless steel substrate. Because of impact effect of cavities collapse, micro-cracks caused material broke off from samples. NiCrSiB laser cladding layer have better micro-crack propagate resistance property than CrNiMo stainless steel.Laser cladding layer has better cavitation resistance properties because of strengthening effect by precipitated phases such as M23[CB]6、CrB、CrSi、Fe2B、B4C and work hardening effect during cavitation erosion process.

Info:

Periodical:

Advanced Materials Research (Volumes 154-155)

Edited by:

Zhengyi Jiang, Xianghua Liu and Jinglong Bu

Pages:

1788-1791

Citation:

X. B. Zhang et al., "Microstructure and Cavitation-Erosion Mechanism of Laser Cladding NiCrSiB Coating on CrNiMo Stainless Steel", Advanced Materials Research, Vols. 154-155, pp. 1788-1791, 2011

Online since:

October 2010

Export:

Price:

$38.00

[1] José Francisco dos Santos: Materials Science and Engineering Vol. A382 (2004), p.378.

[2] C J Lin, J L He: Wear Vol. 259(2005), p.154.

[3] LIU Chang sheng, CAI Qing kui: Laser Surface Modification and Synthesis of Nano Materials (Northeastern Press, Shen-Yang2001) p.38 In Chinese.

[4] K Y Chiu, F T Cheng: Materials Science and Engineering Vol. A392(2005), p.348.

[5] C T Kwok, H C Man: Materials Science and Engineering Vol. A303(2001), p.250.

[6] Kwok C T, Cheng F T and Man H C: Surface and Coatings Technology Vol. 107(1998), p.31.

[7] Wang B Q, Geng G Q and Levy A V: Wear of Materials, Vol. 1(1991), p.129.

[8] M G DiV, Cuppari, R M Souza and A Sinatora: Wear, Vol. 258(2005), p.596.

[9] LIU Wei, ZHENG Yu gui: ACTA METALLURGICAL SINICA, Vol. 39(2003), p.85.

[10] ZHANG Xiao bin, LIU Chang sheng and ZHU Jie: Journal of Northeastern University (Natural Science), Vol. 27(2006), p.1335 In Chinese.

[11] M Szkodo: Journal of Materials Processing Technology, Vol. 162-163(2005), p.410.