CRYSTALLOGRAPHY AND SUBSTRUCTURE OF LATH MARTENSITE FORMED IN CARBON STEELS.

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作者
Sandvik, B.P.J. [1 ]
Wayman, C.M. [1 ]
机构
[1] Department of Metallurgy and Mining Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801, United States
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Metallography | 1983年 / 16卷 / 02期
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摘要
Crystallographic observations have been made for two carbon steels containing 0. 2% and 0. 4% C using transmission electron microscopy and diffraction, both steels exhibit the same austenite-martensite orientation relationship, this indicates that there are four possible relative orientations between adjacent laths in a packet. Contrary to earlier reports, adjacent twin-related laths were never observed. Instead, heavy deformation twinning localized to one side of a lath was observed. Retained austenite was observed between adjacent laths, indicating that growth by a self-accommodation process does not occur. It appears that all ferrous lath martensites have common crystallographic features.
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页码:199 / 227
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