Nanocrystalline steel processed by severe rolling of lath martensite

Nanocrystalline steel was developed by severe cold-rolling and subsequent annealing of low carbon steel with an original microstructure of lath martensite. X-ray diffraction (XRD) and transmission electron microscopy (TEM) indicated that steel with an average grain size of −20 to −300 nm can be obta...

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Veröffentlicht in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2006-09, Vol.432 (1), p.216-220
Hauptverfasser:	Tianfu, Jing, Yuwei, Gao, Guiying, Qiao, Qun, Li, Tiansheng, Wang, Wei, Wang, Furen, Xiao, Dayong, Cai, Xinyu, Song, Xin, Zhao
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Cross-disciplinary physics: materials science rheology Elasticity. Plasticity Exact sciences and technology Lath martensite Materials science Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Nanocrystalline steel Other heat and thermomechanical treatments Physics Severe cold-rolling Tensile strength Treatment of materials and its effects on microstructure and properties
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Zusammenfassung:	Nanocrystalline steel was developed by severe cold-rolling and subsequent annealing of low carbon steel with an original microstructure of lath martensite. X-ray diffraction (XRD) and transmission electron microscopy (TEM) indicated that steel with an average grain size of −20 to −300 nm can be obtained. The tensile tests revealed that the steel with grain size of −20 nm possess a strength of 2520 MPa and poor ductility at ambient temperature.
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2006.06.047