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  • 1
    Electronic Resource
    Electronic Resource
    Hardness of Oxide Scales on Fe-Si Alloys at Room- and High-Temperatures (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 522-523 (Aug. 2006), p. 469-476 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Hardness of oxide scales on Fe-(0, 0.5, 1.5, 3.0)Si alloys was studied at room temperature afteroxidation at 1273 K for 18 ks in oxygen, and at 1073 and 1273 K for 180 and 1080 ks in dry air, bymicro-Vickers hardness measurements. After oxidation at 1273 K for 18 ks, high-temperature hardness ofoxide scales on Fe-(0, 1.5, 3.0)Si alloys was also measured at 1273 K. Oxide scales on Fe-Si alloys weremainly Fe2O3, Fe3O4, FeO and Fe2SiO4. Hardness of Fe2O3, Fe3O4 and FeO on Fe was 6.7, 4.0 and 3.5 (GPa),respectively, and hardness of Fe2O3 on Fe-Si alloys slightly increased with increasing silicon content at roomtemperature. At 1273 K, hardness of Fe3O4 and FeO on Fe was 0.08 and 0.05 (GPa), respectively, andhardness of Fe2O3 on Fe-1.5Si alloy was 0.32 (GPa), and that of Fe2O3 and Fe2SiO4 on Fe-3.0Si alloy was0.53 and 0.63 (GPa), respectively
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.522-523.469.pdf
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  • 2
    Electronic Resource
    Electronic Resource
    Coarsening Behavior of Nanometer-Sized Carbides in Hot-Rolled High Strength Sheet Steel (2007)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 539-543 (Mar. 2007), p. 4813-4818 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: This study deals with a relationship between strength and coiling temperature ofhigh strength hot-rolled sheet steels consisting of ferrite and nanometer-sized carbides inorder to evaluate the stability of the strength against the variation of the coiling temperature.Ti-Mo-bearing and Ti-bearing steels were prepared to form (Ti,Mo)C and TiC in ferrite matrix,respectively. Ti-Mo-bearing steel exhibited the high strength even under the high temperaturecoiling while the strength of Ti-bearing steel decreased significantly. Ti-bearing steel just aftertransforming at 923K had the same hardness as that at 898K. In addition, hardness ofTi-bearing steel coiled at 898K decreased significantly by holding at 923K for 8.64ks whileTi-Mo-bearing steel did not represent a large change in hardness. These results confirm that(Ti,Mo)C is not coarsened easily by Ostwald ripening at the high coiling temperature unlikeTiC. Consequently the retardation of Ostwald ripening of (Ti,Mo)C is attributed to the smallamount of titanium in solution in Ti-Mo-bearing steel
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.4813.pdf
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of Scale Microstructure on Scale Adhesion of Low Carbon Sheet Steel (2006)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 522-523 (Aug. 2006), p. 409-416 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: For industrial purposes, the adhesion control of secondary scale on hot rolled steel sheetis important. A basic study was carried out to clarify the effect of scale microstructure on the scaleadhesion of low carbon steel (0.03%C-0.2%Mn). When scale of FeO (about 8μm thickness) wasgenerated at 800°C and transformed by continuous cooling from 250~600°C to 200°C, the scaletransformed from 400°C showed good adhesion. The scale consisted of magnetite seam from thesteel substrate, lamellar structure of magnetite and α-Fe, and magnetite layer from the scale surface.The orientation analysis by TEM showed the relationship {110}Fe // {100}Fe3O4, 〈110〉Fe //〈100〉Fe3O4, and the lattice strain was calculated as 4%. On the other hand, FeO/Fe substrateshowed the relationship {100}Fe // {110}FeO, 〈110〉Fe // 〈110〉FeO, and 25% lattice strain wascalculated. It is considered that the adhesion of scale should be affected by the lattice strain, thusFe3O4/Fe substrate showed better adhesion than FeO/Fe substrate. The temperature of FeOformation also affects the scale adhesion through the extent of Fe super saturation in FeO
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/13/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.522-523.409.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Effect of Grain Refinement and its Application to Commercial Steels (2003)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 426-432 (Aug. 2003), p. 1207-1212 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/07/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.426-432.1207.pdf
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