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关于X12Cr铁素体耐热钢长期时效投稿
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求教关于关于X12Cr铁素体耐热钢长期时效投稿交流。 最近投递一篇文章，关于X12Cr铁素体耐热钢长期时效，下面是编辑的意见，求教交流，请虫友提些回复意见，谢谢大家了！！ Reviewer #1: The manuscript reports on the effect of long term aging (4000h / ca. 6 months)at 650 and 700 degC on the strength of 10%Cr martesitic/ferrite steel. The authors use TEM and EBSD to track the microstructure differences in the initial and after creep stages. Their main conclusion is that decrease of strength is due to increase of subgrain widths connected to a coarsening of M23C6. This conclusion is based on the fact that the decrease of dislocation density can not fully explained the abrupt decrease of strength at high temperatures. This conclusion is not fully new since it has been oserved by other authors. The authors discuss the connection between microstructure evolution and creep strength with the works of other groups on the field (such as Kostka/Eggeler et al (Ref 1,2,19 of this work); Abe (Ref 14,30,31 in this paper) but commit other interesting works on Laves, M23C6, MX and its correlation with microstructure/evolution and creep strength that need to be discussed in this manuscript such as: Isik et al (Acta Mat 90 (2015) 94-104) LAves/M23C6 effect; Abe et al (J. Press Vessel Pip 84 (2007) 3-12) M23C6 coarsening; Prat et al (Acta Mat 58 (2010) 6142-6153) Kinetics of M23C6/Laves growth; Rojas et al (MAt Scie Eng A 528 (2011) 1372-1381) Dislocation/subgrain evolution during creep. All these works can support the observations and enhance the discussion of this manuscript. Additionally a phase diagram of the steel with the composition investigated could be added to visualize the abscense of the Laves phase at 700 degC as postulated by the authors. Some minor English typing mistakes were found, please check speeling in the manuscript. |
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