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Physical and chemical performances of high Al steels

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Abstract

The effects of acid-soluble Al content on the physical and chemical performances of high Al steels were investigated. The results show that the distribution of acid-soluble Al in steel substrate is uniform. With increasing Al content, the strength and toughness of steels decrease a little but the hardness increases. The average yield strength and tensile strength are 425 MPa and 570 MPa, respectively, and the Rockwell hardness is 89. 7. For non-Al steels the average oxidation rate is up to 0.421 mg/(cm2 · h) at 1373 K. For high Al steels, when the mass fraction of Al is less than 5%, there is a thinner gray oxidized layer on surface and the oxidation rate is high; when the mass fraction of Al is more than 8.0%, the thin, close and yellow glossing film still exists, and the average oxidation rate is only 0.016 mg/(cm2 · h).

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Authors and Affiliations

  1. Anhui Provincial Key Laboratory for Metallurgical Engineering and Resource Recycling, Anhui University of Technology, 243002, Maanshan, China

    Wang Hai-chuan PhD (Professor), Dong Yuan-chi, Zhang Wen-ming, Wang Shi-jun & Zhou Yun

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  1. Wang Hai-chuan PhD
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  2. Dong Yuan-chi
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  3. Zhang Wen-ming
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  4. Wang Shi-jun
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  5. Zhou Yun
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Correspondence to Wang Hai-chuan PhD.

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Foundation item: Project (200202) supported by the Science and Technology Foundation for Excellent Youth of Anhui Province; project (2003kj077) supported by the Education Office of Anhui Province

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Wang, Hc., Dong, Yc., Zhang, Wm. et al. Physical and chemical performances of high Al steels. J Cent. South Univ. Technol. 12, 385–388 (2005). https://doi.org/10.1007/s11771-005-0166-y

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  • DOI: https://doi.org/10.1007/s11771-005-0166-y

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