Effect of Carbon and Nitrogen Content on Deformation and Fracture of AISI 304 Austenitic Stainless Steel
Journal Title: Frattura ed Integrità Strutturale - Year 2008, Vol 2, Issue 4
Abstract
The effect of small differences in the content of carbon and nitrogen on the room temperature tensile deformation and fracture behaviour of an AISI 304 stainless steel was studied. In the steel containing the lower amount of carbon and nitrogen, a higher amount of strain induced ’ martensite is formed, which increases strain hardening rate and both uniform and total elongation at fracture. The presence of large martensitic areas in the cross section causes strain localization at the austenite/martensite interface, which promotes the nucleation of cracks and their propagation along the interface. This results in a decrease of Ultimate Tensile Strength. Strain induced transformation slightly reduces strain rate sensitivity, as well.
Authors and Affiliations
A. Molinari, M. Composta, C. Menapace
Keywords
Related Articles
- EP ID EP97528
- DOI 10.3221/IGF-ESIS.04.02
- Views 85
- Downloads 0
A magnetorheological clutch for efficient automotive auxiliary device actuation
In this paper the results of a project funded by Regione Toscana aimed at reducing the power absorption of auxiliary devices in vehicles are presented. In particular the design, testing and application of a magneto...
A statistically self-consistent fatigue damage accumulation model including load sequence effects under spectrum loading
probabilistic methodology is proposed to evaluate fatigue damage accumulation and fatigue lives of specimens under variable amplitude loading. With probabilistic modifications in the present model, the calculative...
Competition between microstructure and defect in multiaxial high cycle fatigue
This study aims at providing a better understanding of the effects of both microstructure and defect on the high cycle fatigue behavior of metallic alloys using finite element simulations of polycrystalline aggre...
The application of the infrared thermography on titanium alloy for studying fatigue behavior
The infrared thermography is an attractive tool for studying the fatigue behavior of materials. Based on two theoretical models of fatigue damage indicators, this work studied the fatigue properties of the virgin T...
Prediction of three-dimensional crack propagation paths taking high cycle fatigue into account
Engine components are usually subject to complex loading patterns such as mixed-mode Low Cycle Fatigue Loading due to maneuvering. In practice, this LCF Loading has to be superimposed by High Cyclic Fatigue L...