A STUDY OF LASER CLADDING BUCKYTUBES/DUCTILE IRON

Acta Metall Sin

1996, Vol. 32

Issue (9): 980-984 DOI:

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A STUDY OF LASER CLADDING BUCKYTUBES/DUCTILE IRON

ZHANG Jihong; WEI Bingqing; LIANG Ji; GAO Zhidong; WU Dehai (Tsinghua University; Beijing 100084)

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ZHANG Jihong; WEI Bingqing; LIANG Ji; GAO Zhidong; WU Dehai (Tsinghua University; Beijing 100084). A STUDY OF LASER CLADDING BUCKYTUBES/DUCTILE IRON. Acta Metall Sin, 1996, 32(9): 980-984.

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Abstract Laser melting and subsequent heat-treatment have been used to modify the pearlite ductile iron coated with Buckytubes. The hardness of the samples can reach HRC65. Studies through SEM indicated that the main structures are martensite and net carbide. Meanwhile, the number of nodular graphite decreases obviously. Circular structures composed of martensite and carbide are found around nodular graphite. A new phase with regular shape has been observed. The new phase is devoid of Fe, Mn, Cr, Ni, Cu and its formation relates with the martensitic transformation.

Key words: buckytube ductile iron laser cladding

Received: 18 September 1996

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1996/V32/I9/980

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