文献类型：期刊文献

英文题名：Effect of Oxide Growth Strain in Residual Stresses for the Deflection Test of Single Surface Oxidation of Alloys

作者：Maharjan, Sanjeev[1];Zhang, Xiancheng[1];Wang, Zhengdong[1]

机构：[1]E China Univ Sci & Technol, Coll Mech & Power Engn, MOE, Key Lab Safety Sci Pressurized Syst, Shanghai 200237, Peoples R China

年份：2012

卷号：77

期号：1-2

起止页码：93

外文期刊名：OXIDATION OF METALS

收录：;EI(收录号：20120714762747);WOS:【SCI-EXPANDED(收录号:WOS:000301518600008)】；

语种：英文

外文关键词：Residual stresses; Growth strain; Creep strain; Isothermal oxidation; Relaxation

摘要：Residual stresses developed in FeCrAlY and Ni80Cr20 alloys have been predicted considering growth strain and creep strain in oxide layer and creep strain in alloy or metal. Such stresses, a net compressive stress developed in oxide scales and a net tensile stress developed in alloy strip, produce deflection of a single surface oxidized specimen during high temperature isothermal oxidation. Stresses generated in these alloys and oxide scales were compared with creep deflections. Introducing oxide growth strain in the oxide scales increase the oxide stress value during the initial oxidation stage, during which creep analysis lacks prediction. Oxide stress reaches maximum value at certain oxidation time in the initial oxidation stage. After that oxidation time relaxation of oxide stress occurs considerably in later oxidation stage.