Title of article
Influence of smelting processes on precipitation behaviors and mechanical properties of low activation ferrite steels
Author/Authors
Xia، نويسنده , , Z.X. and Zhang، نويسنده , , C. and Lan، نويسنده , , H. and Yang، نويسنده , , Z.G. and Wang، نويسنده , , P.H. and Chen، نويسنده , , J.M. and Xu، نويسنده , , Z.Y. and Li، نويسنده , , X.W and Liu، نويسنده , , S.، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2010
Pages
6
From page
657
To page
662
Abstract
In this paper, the influence of smelting processes on precipitation behaviors and mechanical properties of CLF-1 (China low activation ferrite) steel was investigated. Mechanical properties of CLF-1 steels melted by vacuum induction melting (VIM, CS25 steel) and vacuum induction melting followed by consumable electrode remelting (VIM + ESR, CS350 steel) had been studied. The results indicated that the steels showed similar values of hardness and tensile strength, however, creep properties of CLF-1 steel were obviously improved by VIM + ESR process. M23C6 and M7C3 Carbides were precipitated in the CS25 steel, and M23C6 carbides were precipitated in CS350 steel after high-temperature tempering at 1013 K for 90 min. Creep properties of CS25 steel were shown to be dramatically deteriorated by the existence of rod M7C3 precipitates, which was due to W macrosegregation in the CS25 steel melted by VIM. M7C3 was replaced by M23C6 after ageing at 823 K for 5000 h.
Keywords
CLF-1 steel , Precipitation behaviors , Smelting processes , macrosegregation , Creep properties
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Serial Year
2010
Journal title
MATERIALS SCIENCE & ENGINEERING: A
Record number
2166999
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