The influence of particle diameter on the powder melting process in diode laser cladding

Tanigawa, Daichi; Abe, Nobuyuki; Tsukamoto, Masahiro; Hayashi, Yoshihiko; Yamazaki, Hiroyuki; Tatsumi, Yoshihiro; Yoneyama, M.

doi:10.1364/jsap.2014.19p_c4_4

Cited by 1 publication

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“…The Ni–Cr–B–Si alloys have been widely used because boron and silica are strong reductants which can suppress metal oxides in molten pool while forming borosilicate possessing low density, low melting point, and high liquidity. In addition, the borosilicate can serve as slag float on the surface of the cladding layer under the convection action of the laser molten pool, preventing further oxidation of the molten pool . However, cracks are easy to appear in the coating when the boron and silica content is higher than what the laser cladding is adopted, especially in the network distribution of brittle boride with low melting point .…”

Section: Introductionmentioning

confidence: 99%

Effects of Carbon and Boron on Structure and Properties of Austenitic Stainless Steel Coatings Fabricated by Laser Remanufacturing

Chen

Qiu

et al. 2018

steel research int.

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The coatings are fabricated using austenitic stainless steel powder with various contents of carbon and boron via laser remanufacturing technique. A new synchronous lateral powder feeding device is adopted to avoid surface oxidation of molten pool. The authors find that the strength can be increased but plasticity is decreased of with the rise of boron content due to the formation of lamellar borides phase structures, which are very brittle and have high hardness. In addition, the authors also find that the tensile strength and hardness are enhanced by increasing the content of carbon, while the plasticity is deteriorated due to the formed carbide in the grain of the austenitic stainless steel coating.

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Section: Introductionmentioning

confidence: 99%