Title :
Investigation of cracking pattern of brittle hardening layers under tension of coated specimens
Author :
Koval, A.V. ; Panin, S.V.
Author_Institution :
Inst. of Strength Phys. & Mater. Sci., Tomsk Polytech. Univ., Russia
Abstract :
Studies were performed of the influence of interface profile as well as hardened layer thickness on the pattern of crack distribution in coating under static tension of "structural steel-hardening coating" compositions. The method of diffusion borating was used for surface hardening. Borated layers have discrete structure and consist of sequentially located phases having different strength. The interfaces had toothed, needled of plane profiles that depended on chemical content and structure of substrate as well as on surface impregnation modes. Different interface profiles were obtained on structural (3% Ni, - 1% Mo) and low-carbon steel specimens
Keywords :
alloy steel; brittle fracture; carbon steel; crack-edge stress field analysis; interface structure; surface composition; surface hardening; borated layers; brittle hardening layers; chemical content; coated specimens; crack distribution; cracking pattern; diffusion borating; discrete structure; hardened layer thickness; interface profile; low-C steel specimens; needled; plane profiles; sequentially located phases; static tension; structural Ni-Mo steel specimens; structural steel-hardening coating compositions; surface hardening; surface impregnation modes; toothed; Chemicals; Coatings; Geometry; Histograms; Materials science and technology; Physics; Steel; Stress; Surface cracks; Testing;
Conference_Titel :
Modern Techniques and Technology, 2001. MTT 2001. Proceedings of the 7th International Scientific and Practical Conference of Students, Post-graduates and Young Scientists
Conference_Location :
Tomsk
Print_ISBN :
0-7803-6346-9
DOI :
10.1109/MTT.2001.983742
