IN SITU OBSERVATION OF LOWER BAINITIC CARBIDES PRECIPITATION

Acta Metall Sin

1988, Vol. 24

Issue (6): 447-449 DOI:

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IN SITU OBSERVATION OF LOWER BAINITIC CARBIDES PRECIPITATION

KANG Mokuang;SUN Jialin Northwestern Polytechnic University; Xi'an Manuscript received 16 December; 1987

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KANG Mokuang;SUN Jialin Northwestern Polytechnic University; Xi'an Manuscript received 16 December; 1987. IN SITU OBSERVATION OF LOWER BAINITIC CARBIDES PRECIPITATION. Acta Metall Sin, 1988, 24(6): 447-449.

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Abstract The lower bainitic carbides precipitation in 40CrMnSiMoV steel previouslyaustempered at 310℃ was observed in situ under high temperature stage on high voltage TEM.The typical lower bainitic carbides can precipitate from within bainitic ferrite tempered attemperature higher than isothermal transformation for certain period. It revealed that the lowerbainitic ferrite is supersaturated with C. The carbides may also precipitate from austenite, butthey have no typical feature ofthe lower bainitic carbides.

Key words: carbide precipitation supersaturation lower bainitic carbide high voltge transmission electron microscopy

Received: 18 June 1988

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1988/V24/I6/447

1 Hehemann R F, Kinsman K R, Aaronson H I. Metall Trans, 1972; 3: 1077
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3 Honeycombe R W K. Metall Trans, 1976; 7A: 915
4 孙加林,马世良,康沫狂,金属学报,(待发表

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