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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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초록· 키워드
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The effect of heat treatment on the micro-structures and the mechanical properties of 0.002% boron added low carbon steel was investigated. The tensile strength reached the peak at about $880-890^{\circ}C$ with the rising quenching temperature and then the hardness decreased sharply, but the tensile strength hardly decreased. The tensile and yield strength decreased and the total elongation increased with a rising tempering temperature, but the tensile and yield strength sharply fell and the total elongation prominently increased from above a $400-450^{\circ}C$ tempering temperature. Tempered martensite embrittlement (TME) was observed at tempering condition of $350-400^{\circ}C$. In the condition of quenching at $890^{\circ}C$ and tempering at $350^{\circ}C$, the boron precipitates were observed as Fe-C-B and BN together. The hardness decreased in proportion to the tempering temperature untill $350^{\circ}C$ and dropped sharply above $400^{\circ}C$ regardless of the quenching temperature.
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참고문헌 (18)
참고문헌 신청
N. E. Hannerz / 1985 / ISIJ Int 25:149
D. T. Liewllyn / 1993 / Ironmaking and Steelmaking 20:136
B. M. Kapadia / 1978 / Hardenability Concepts with Application to Steel / AIME :448
J. E. Morral / 1980 / Boron hardenability mechanisms, in Boron in Steel :19
Ph. Maitrepierre / 1975 / Metall. Mater. Trans 6:287
D. T. Liewllyn / 1993 / Ironmaking and Steelmaking 20:136
B. M. Kapadia / 1978 / Hardenability Concepts with Application to Steel / AIME :448
J. E. Morral / 1980 / Boron hardenability mechanisms, in Boron in Steel :19
Ph. Maitrepierre / 1975 / Metall. Mater. Trans 6:287
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