BEHAVIOUR OF TRACE Mg IN HIGH SPEED STEEL M2

Acta Metall Sin

1993, Vol. 29

Issue (11): 14-17 DOI:

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BEHAVIOUR OF TRACE Mg IN HIGH SPEED STEEL M2

MAO Weimin Beijing Polytechnic University University of Science and Technology Beijing

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MAO Weimin Beijing Polytechnic University University of Science and Technology Beijing. BEHAVIOUR OF TRACE Mg IN HIGH SPEED STEEL M2. Acta Metall Sin, 1993, 29(11): 14-17.

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Abstract An investigation was made of the eutectic microstructure during solidificationand the prespheroidization of eutectic carbide at elevated temperature of high speed steel M2inoculated with Mg. The traditional lamellar eutectic carbide M_2C in steel M2 may change in-to the fishbone eutectic carbide M_6C and block eutectic carbide MC if proper amount, saying0.012%, of Mg was added. The fishbone eutectic carbide prespheroidization may be retardedby Mg.

Key words: high speed steel M2 Mg carbide solidification prespheroidization annealing

Received: 18 November 1993

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1993/V29/I11/14

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