Stress determination in a thermally grown oxide on Ni38Cr alloy by use of micro/nanogauge gratings

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING

卷:812

Article

Panicaud, Benoit¹  Hmima, Abdelhamid¹  Rampelberg, Cecile²  Ngom, Mbaye¹  Lebel, Florimonde²  Geandier, Guillaume²  Maurer, Thomas³  Grosseau-Poussard, Jean-Luc⁴  Guyot, Emmanuel¹  Beal, Jeremie³  Marae-Djouda, Joseph⁵  Le Joncour, Lea¹  Alhussein, Akram⁶ 

[1] Univ Technol Troyes, Life Assessment Struct Mat Mech & Integrated Syst, 12 Rue Marie Curie,CS,42060, F-10004 Troyes, France

[2] Univ Lorraine, CNRS, UMR 7198, Inst Jean Lamour IJL, Campus ARTEM,2 Allee Andre Guinier,BP 50840, F-54011 Nancy, France

[3] Univ Technol Troyes, CNRS ERL 7004, Light Nanomat Nanotechnol L2n, 12 Rue Marie Curie,CS 42060, F-10004 Troyes, France

[4] Univ La Rochelle, Lab Sci Ingenieur Environm LaSIE, CNRS UMR 7356, Ave Michel Crepeau, F-17042 La Rochelle 1, France

[5] Ecole Ingenieur ES, ERMESS, EPF, 3 Bis Rue Lakanal, F-92330 Sceaux, France

[6] Univ Technol Troyes, Life Assessment Struct Mat Mech & Integrated Syst, Pole Technol Sud Champagne, 26 Rue Lavoisier, F-52800 Nogent, France

关键词: High temperature behavior;    Growth stress determination;    Microgauges;    Local strain;    2D mapping;   

DOI  :  10.1016/j.msea.2021.141079

来源: Elsevier

【 摘 要 】

Residual stresses in thermal oxide layer may be significant and can influence the lifetime of systems in high temperature environments. It is thus relevant to determine locally stress and strain mechanisms and especially the mechanical relation between the oxide layer and the metallic substrate. To achieve such a goal, an innovative approach is proposed by use of micro/nano-gratings. Monitoring experimentally the gauges displacement during high temperature oxidation and considering a specific model, we are able to determine thermomechanical quantities both in oxide Cr2O3 and in metallic alloy Ni38Cr, as well as their evolution during the oxidation time. Parameters values for calculations of the stress versus time evolution are also provided.

【 授权许可】

Free