Process Characterization of 40Cr Steel Roller by Laser Surface Alloying with Rare Earths Oxide Y2O3

An Qi Wu; Qi Bin Liu; Shui Jie Qin

doi:10.4028/www.scientific.net/AMR.295-297.520

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 295-297Process Characterization of 40Cr Steel Roller by...

Process Characterization of 40Cr Steel Roller by Laser Surface Alloying with Rare Earths Oxide Y₂O₃

Abstract:

To increase the mechanical properties of the metal rollers, Mo and Mo+Y₂O₃ alloy powders were designed. And a kind of coating fabricated by a continuous wave CO₂ laser surface alloying(LSA) on 40Cr steel roller was obtained. The effect of Mo and Mo+Y₂O₃ on microstructure, hardness and wearing resistance of alloying coating were studied by OM, SEM, XRD, microhardness tester and wearing tester. The experimental results indicate that the grain size in alloying coating is obviously fined, and the grain boundary is strengthened. The uniformity and density of microstructure are improved. The microhardness and wear resistance of alloying coating are significantly increased.

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Manufacturing Science and Technology, AEMT2011

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Periodical:

Advanced Materials Research (Volumes 295-297)

Pages:

520-526

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.295-297.520

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Online since:

July 2011

Authors:

An Qi Wu, Qi Bin Liu, Shui Jie Qin

Keywords:

40Cr Steel, Laser Surface Alloying, Laser Technique, Rare Earth Oxide Y₂O₃

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