Effect of carbides on erosion resistance of 23-8-N steel

Bulletin of materials science

Ashok Sharma¹  C P Sharma¹  D B Goel²  Aniruddha A Gadhikar¹ 

[1] Department of Metallurgical and Materials Engineering, Malaviya National Institute of Technology, Jaipur 302 017, India$$Department of Metallurgical and Materials Engineering, Malaviya National Institute of Technology, Jaipur 302 017, IndiaDepartment of Metallurgical and Materials Engineering, Malaviya National Institute of Technology, Jaipur 302 017, India$$;Department of Metallurgical and Materials Engineering, Malaviya National Institute of Technology, Jaipur 302 017, India$$Former Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee 247 667, India (Now at BRCM College of Engineering & Technology, Bahal 127 028, India)$$Department of Metallurgical and Materials Engineering, Malaviya National Institute of Technology, Jaipur 302 017, IndiaDepartment of Metallurgical and Materials Engineering, Malaviya National Institute of Technology, Jaipur 302 017, India$$Former Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee 247 667, India (Now at BRCM College of Engineering & Technology, Bahal 127 028, India)$$Former Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee 247 667, India (Now at BRCM College of Engineering & Technology, Bahal 127 028, India)Department of Metallurgical and Materials Engineering, Malaviya National Institute of Technology, Jaipur 302 017, India$$Former Department of Metallurgical and Materials Engineering, Indian Institute of Technology, Roorkee 247 667, India (Now at BRCM College of Engineering & Technology, Bahal 127 028, India)$$

关键词: Nitronic steel;    carbides;    slurry erosion;    erosion testing.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

Microstructure is one of the most important parameters influencing erosion behaviour of materials. The role of carbides in the matrix is very complicated in controlling the erosion rate of the materials. Conflicting results have been reported in the literature about the effect of carbides on erosion resistance. Carbides are of great importance especially as obstacles against the penetration of erosive particles into the material surface. However, they are susceptible to cracking and causing matrix decohesion which may increase the overall erosion rate. In 23-8-N nitronic steel, carbides present in the form of bands are observed to accelerate the erosion rate. Coarse carbides cause depletion of carbon in the austenite matrix which adversely affects the strain hardening tendency thus causing deterioration in erosion resistance of the bulk material. The dissolution of carbides in the austenitic matrix after solution annealing is observed to improve the erosion resistance of 23-8-N nitronic steel.

【 授权许可】

Unknown