Investigation of average growth stresses inCr2O3 scales measured by a novel deflection method
来源期刊：中国有色金属学报(英文版)2002年第3期
论文作者：钱余海 李美栓 刘光明 辛丽
文章页码：441 - 444
Key words：growth stress; deflection test; creep analysis; Cr2O3 scale
Abstract: The stress in the oxide film plays an important role to keep it intact so it is necessary to determine the stress in the oxide scale. Average growth stresses in Cr2O3 scales formed on Ni-base alloy (Ni80Cr20) at 1000℃ in air w ere investigated by a novel deflection technique. It is found that the growth stress in the oxide scale is basically compressive and its average order is 100MPa. The stress values are high for the thin scales and become low for thick scales after oxidized for 10h. The planar stress distribution in metals is complex. It is both compressive and tensile at the beginning of oxidation procedure, and then become only tensile during further oxidation.
