Determination of oxide growth stress by a novel deflection method

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	Determination of oxide growth stress by a novel deflection method
	M. S. Li; T. F. Li; W. Gao; Z. Y. Liu
	1999
发表期刊	Oxidation of Metals
ISSN	0030-770X
卷号	51 期号:5-6 页码:333-351
摘要	A new technique has been developed to monitor the growth stresses ill oxide scales by measuring specimen deflection. Compared ed to the conventional deflection method, the new technique does not require a coating for pl protecting one side of the specimen front oxidation. This new method does not have temperature limits and has improved precision for stress measurement in alumina scales. Two, alumina-forming alloys, Fe-22Cr-5Al-0.3Y and Fe-22.6Cr-4.42Al-0.21Ti ere studied with this method. During oxidation at 1000 degrees C in air, the average compressive stresses in the alumina scales were found to decrease from similar to 1000 to similar to 100 MPa with increasing scale thickness on the two alloys. The growth stress in alumina scales was directly proportional to the oxide grow th rates, The stresses in the substrate alloys were much lower, on the order of I MPa. Creep occurred in the substrate alloys and was taken into consideration in the stress analysis. It is believed that deep in the alloy, substrates allowed stresses in the oxide scales to relax. Annealing tests showed that the stresses related much easier in thin than in thick scales.
部门归属	chinese acad sci, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china. univ auckland, dept chem & mat engn, auckland 1, new zealand.;li, ms (reprint author), chinese acad sci, inst corros & protect met, state key lab corros & protect, shenyang 110015, peoples r china
关键词	Oxidation Al2o3 Scale Growth Stress Fe-cr-al Alloy Specimen Deflection Oxidation Scales Alloys
URL	查看原文
WOS记录号	WOS:000079686800001
引用统计	被引频次：21[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/37403
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. S. Li,T. F. Li,W. Gao,et al. Determination of oxide growth stress by a novel deflection method[J]. Oxidation of Metals,1999,51(5-6):333-351.
APA	M. S. Li,T. F. Li,W. Gao,&Z. Y. Liu.(1999).Determination of oxide growth stress by a novel deflection method.Oxidation of Metals,51(5-6),333-351.
MLA	M. S. Li,et al."Determination of oxide growth stress by a novel deflection method".Oxidation of Metals 51.5-6(1999):333-351.