The fracture and fatigue properties of cast irons used for trunk mains in the water industry

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

卷:527

Article

Mohebbi, H.¹  Jesson, D. A.¹  Mulheron, M. J.¹  Smith, P. A.¹ 

[1] Univ Surrey A1, Fac Engn & Phys Sci, Guildford GU2 7XH, Surrey, England

关键词: Cast iron;    Microstructure;    S-N curves;    Fractography;   

DOI  :  10.1016/j.msea.2010.05.071

来源: Elsevier

【 摘 要 】

In order to assess the remaining life of cast iron assets in the water sector, an understanding of their fracture and fatigue characteristics is necessary. The present work is concerned with the toughness and Paris crack growth behaviour of cast iron materials with a range of micro-structures, taken from trunk mains currently in service. When considered with other data from the literature, the results from the present study enable the range of fatigue crack growth behaviour likely to be seen in service to be quantified. The role of microstructure in fracture and fatigue behaviour is discussed. Calculations of fatigue life based on integration of the Paris law are then carried out and compared with previously published data for samples from cast iron distribution mains. The results from these investigations support the development of asset management tools for use in the water industry. (C) 2010 Elsevier B.V. All rights reserved.

【 授权许可】

Free