期刊
MATERIALS LETTERS
卷 65, 期 21-22, 页码 3285-3288出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2011.07.021
关键词
Oxidation; Surface; Austenitic stainless steel; Tensile strength
资金
- State Key Lab of Advanced Metals and Materials
- university natural science research project of Anhui province [KJ2009B132]
A new alumina-forming austenitic stainless steel with greatly improved high-temperature oxidation resistance and strength was developed via alloying 3.0 wt.% Al in the Fe-25Ni-18Cr based alloy. Continuous, stable and exclusive alumina scale was formed in either dry air or air with 10% water vapor mixed environment at 800 degrees C. The long-term high-temperature oxidation performance is appreciably enhanced which is associated with the high density of the B2-NiAl precipitation phase maintaining the Al(2)O(3) surface layer. Moreover, when tested at 750 degrees C in dry air environment, the new steel showed high yield and fracture tensile strength of 310-335 and 480-500 MPa, respectively. (C) 2011 Elsevier B.V. All rights reserved.
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