Influence of Plastic Zone Size on Fatigue Threshold in Steels

Janeiro 1984

Threshold and low fatigue crack growth rate data was obtained as a function of R in air and 3.5% NaCl in a medium strength plain carbon steel. The true delta K(th) value was obtained and used to establish a relationship between fatigue threshold of cracked specimens and fatigue strength S (N=10^7) of plain specimens. It was found that in this material the size of the cyclic plastic zone and the material grain size are the controlling parameters in ultralow crack growth rate tests and define the transition between Region I and Region II of crack propagation.

Autores da comunidade :

• 

  L

  Luís Manuel Guerra da Silva Rosa

  ist11630

  Afiliações e fontes

  IST > LAETA

  Laboratório Associado de Energia, Transportes e Aeronáutica

  IST > ICEMS

  Instituto de Ciência e Engenharia de Materiais e Superfícies

  IST > DEM

  Departamento de Engenharia Mecânica

• 

  C

  Carlos Augusto Gomes de Moura Branco

  ist11041

E.M.A.S. (U.K.)

This information is not available. Please contact the author for more information.

materials-engineering - Engenharia dos Materiais

eng - Inglês