Paper Title:
Microstructure of Flame-Spray Welded Ni-Based Alloy Coating and Base Metal
  Abstract

One-step spray welding process was used to deposit Ni60 Ni-based self-fluxing alloy coating on 35CrMo wedge disc. According to different microstructure characters the cross-section of spray-welded specimen can be divided into three areas: spray welded coating, transition region and base metal. For the influence of welding thermo, base metal shows pearlite area, incomplete recrystallized area and original pearlite+ferrite area, the hardness of which is between 200HV to 165HV. The hardness of coating is about 865HV, which ensure good wear resistance. Because of the particles incomplete packing and the viscidity of melted metal, micro cavities formed near transition region and combine to form cavity chains, which will decrease the wear resistance and corrosion resistance of coating.

  Info
Periodical
Chapter
Chapter 8: Material Processing Technology
Edited by
Huixuan Zhang, Ye Han, Fuxiao Chen and Jiuba Wen
Pages
1662-1665
DOI
10.4028/www.scientific.net/AMM.117-119.1662
Citation
X. Li, H. B. Zhou, B. Chen, "Microstructure of Flame-Spray Welded Ni-Based Alloy Coating and Base Metal", Applied Mechanics and Materials, Vols. 117-119, pp. 1662-1665, 2012
Online since
October 2011
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Price
$35.00
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