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| Mechanical properties and microstructural characters of hot--rolled plates of an acicular ferrite steel for line pipe |
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| 南方冶金学院 |
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Cite this article:
;. Mechanical properties and microstructural characters of hot--rolled plates of an acicular ferrite steel for line pipe. Chin J Mater Res, 2004, 18(3): 322-326.
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Abstract Mechanical properties and microstructural characters of hot--rolled plates of
an acicular ferrite steel for line pipe were investigated by transmission
electron micrographs (TEM). The experimental results showed that hot--rolled
plates of the acicular ferrite steel for line pipe possess excellent strength and
toughness behaviors. Moreover, its microstructural characters
possess several configurations under TEM, which are (1) ferrite
laths with obvious interface, (2) ferrite laths without obvious
interface, but the interface can be discerned faintly from the
linear arrangment of those directional islands, (3) the coexistence of
ferrite laths and non--equiaxed grains. These are somewhat different from
those of weld structures, which are generally thought to consist of an
assemblage of interwoven ferrite laths.
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Received: 19 July 2004
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