Fatigue damage cumulation in brass under variable loading
Journal Title: Archiwum Odlewnictwa - Year 2009, Vol 9, Issue 3
Abstract
In the paper there was presented the course of fatigue damage cumulation in specimens made of CuZn37 brass. During the analysis the course of damage cumulation there were used parameters of hysteresis loop and microstructure changes for different levels of fatigue damage, that were registered during the tests. Basing on the analysis of three hysteresis loop parameters (stress amplitude a, plastic strain amplitude ap and plastic strain energy Wpl) it has been found that during variable loading the smallest changes are observed for the energy Wpl. Microscopic analysis of brass specimens after various fatigue levels showed that fatigue damage cumulation is also visible in changes taking place both within grains and at their boundaries. These changes include the presence of failures at boundaries of grains and slide banding systems inside of them, which are typical for plastic strain of the material.
Authors and Affiliations
S. Mroziński, s. Dymski
Keywords
Related Articles
- EP ID EP72092
- DOI -
- Views 87
- Downloads 0
Interactions at the mould – modifying coating – molten nickel alloy interface
The study describes thermal-chemical interactions that take place in the molten nickel alloy-ceramic mould system, where the mould is either coated with a modifying coating („blue” mould) or is not („white” mould). The c...
The effect of recasting on corrosion of DUCINOX prosthetic alloy
The effect of recasting, up to two times, Ni-Cr (DUCINOX) prosthetic alloy on its corrosion properties was carried out. The corrosion measurements were done in deoxygenated Fusayama Meyer artificial saliva solution at te...
Thin Wall Austempered Ductile Iron (TWADI)
In this paper the analysis of thin walled castings made of ductile iron is considered. It is shown that thin wall austempered ductile iron can be obtained by means of short-term heat treatment of thin wall castings witho...
Effect of thickness of refractory coating on the Lost Foam Process
The analysis of the influence of the thickness of refractory coating on the production process of casts in the Lost Foam process was introduced in the work. It was conducted in the peculiarity the analysis simulating inv...
Rod and lamellar growth of eutectic
The paper presents adaptation problem of lamellar growth of eutectic. The formation of rod eutectic microstructure was investigated systematically. A new rod eutectic configuration was observed in which the rods form wit...