Study on Macroscopic Morphology and Microstructure of Single Ni60 Laser Clad Tracks Prepared Using a Variable Laser Beam Shaper

You Zheng Sun; Si Yu Wang; Daniel Wellburn; Shuo Shang; Jian Cheng; Sui Yuan Chen; Bin Zhang; Jing Liang; C.S. LIU

doi:10.4028/www.scientific.net/AMR.887-888.1091

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 887-888Study on Macroscopic Morphology and Microstructure...

Study on Macroscopic Morphology and Microstructure of Single Ni60 Laser Clad Tracks Prepared Using a Variable Laser Beam Shaper

Abstract:

The objective of the present study was to find the influence of laser beam shape on macroscopic morphology and microstructure of single Ni60 laser clad tracks. Laser cladding of Ni60 alloy powder can be used to manufacture and remanufacture backup rollers for the steel industry. Controlling temperature distribution can assist with achieving favorable macroscopic morphology and microstructure. Five different beam profiles were used in our experiment to prepare clad tracks. The beam profiles varied in terms of the ratio of energy densities between the internal and external parts. The macroscopic morphology and microstructure was tested using SEM. The study founds decreasing the ratio is possible to achieve wider clad tracks with a larger cross section area. It was found that microstructure in upper region tended to form net-like dendrite microstructure at low energy density ratios.

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Periodical:

Advanced Materials Research (Volumes 887-888)

Pages:

1091-1095

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.887-888.1091

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Online since:

February 2014

Authors:

You Zheng Sun*, Si Yu Wang, Daniel Wellburn, Shuo Shang, Jian Cheng, Sui Yuan Chen, Bin Zhang, Jing Liang, C.S. LIU

Keywords:

Laser Beam Profiles, Macroscopic Morphology, Microstructure

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