Nanocrystalline Advanced High Strength Steel Produced by Cold Rolling and Annealing
An advanced high strength steel of composition Fe-0.11C-2.46Si-11.5Mn-0.38Al-0.029N (wt pct) was produced with a yield strength of 790 MPa, an ultimate tensile strength of 1300 MPa, and a total elongation of 28 pct. Conventional processing of hot-band steel by cold rolling and annealing at 873 K (600 °C) was used to produce a nanocrystalline structure with an average grain diameter 112 ± 25 nm (68 pct confidence level). Electron backscatter diffraction (EBSD) and X-ray diffraction (XRD) were utilized to characterize the nanocrystalline steel, which consisted of γ-austenite, ε-martensite, and α-ferrite.
D. M. Field and D. C. Van Aken, "Nanocrystalline Advanced High Strength Steel Produced by Cold Rolling and Annealing," Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, vol. 47, no. 5, pp. 1912 - 1917, Springer Boston, May 2016.
The definitive version is available at https://doi.org/10.1007/s11661-016-3394-x
Materials Science and Engineering
Keywords and Phrases
Cold rolling; Gamma rays; Hot rolling; Nanocrystals; Tensile strength; X ray diffraction, Advanced high strength steel; Average grain diameter; Conventional processing; Electron back scatter diffraction; Epsilon martensite; Nano-crystalline structures; Nanocrystalline steels; Ultimate tensile strength, High strength steel
International Standard Serial Number (ISSN)
Article - Journal
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01 May 2016