Fatigue Behaviour of Cast Iron with Globular Graphite

2004 ◽  
Vol 6 (7) ◽  
pp. 541-544 ◽  
Author(s):  
P. Hübner ◽  
G. Pusch ◽  
L. Krodel
Keyword(s):  
Cast Iron ◽  
Fatigue Behaviour ◽  
Globular Graphite

Fatigue behaviour assessment of ductile cast iron smooth specimens

2021 ◽  
pp. 106459
Author(s):  
Sabrina Vantadori ◽  
Camilla Ronchei ◽  
Daniela Scorza ◽  
Andrea Zanichelli ◽  
Andrea Carpinteri
Keyword(s):  
Cast Iron ◽  
Fatigue Behaviour ◽  
Ductile Cast Iron

INVESTIGATION OF THE SPECIFICITY OF ULTRASONIC TESTING OF CAST IRON WITH GLOBULAR GRAPHITE USING LONGITUDINAL ELASTIC WAVES

2020 ◽  
pp. 6-25 ◽  
Author(s):  
V. N. Danilov ◽  
L. V. Voronkova
Keyword(s):  
Cast Iron ◽  
Ultrasonic Testing ◽  
Rayleigh Scattering ◽  
Frequency Spectra ◽  
Longitudinal Waves ◽  
Globular Graphite ◽  
Useful Signal ◽  
Two Samples ◽  
Standard Normal ◽  
Experimental Values

On the basis of the previously developed model for estimating the attenuation coefficient of elastic longitudinal waves in cast iron due to their Rayleigh scattering on graphite inclusions, the influence of such attenuation for cast iron with globular graphite on the characteristics of signals with frequency spectra of different widths depending on the nominal pulse frequencies, cast iron models and the distance traveled by the ultrasonic wave is studied. Computer modeling acoustic channel for environment – cast iron with globular graphite for standard normal probes of two types for studying influence of such environment on characteristics real transmitting and registered signals at the ultrasonic testing. Comparison of results of calculations of spectrums and pulses of registered bottom signals with their experimental values for two samples of cast iron with globular graphite has shown an opportunity of use of the applied settlement model for description of the actual physical phenomena quite adequate for practice. Influence of attenuation of longitudinal waves in cast iron with globular graphite on the directivity characteristic of their radiation is shown on model of cast iron and duration of a pulse. The estimation of the relation of levels of a registered signal and structural noise for various reflectors and characteristics of controllable cast iron has shown performance of recommendations by I. N. Ermolov on reliable detection of a useful signal on a background of noise for thickness, before established experimentally. Features of DGS-diagrams for cast iron with globular graphite, caused by higher, than in steel, attenuation of longitudinal waves and a little smaller speeds of their distribution are marked.

EFFECT OF WATER ON DUCTILITY AND FATIGUE STRENGTH OF AUSTEMPERED DUCTILE CAST IRON (ADI)

2006 ◽  
Vol 20 (25n27) ◽  
pp. 4571-4576
Author(s):  
TERUTOSHI YAKUSHIJI ◽  
W. GEORGE FERGUSON ◽  
MASAHIRO GOTO
Keyword(s):  
Cast Iron ◽  
Fatigue Strength ◽  
Carbon Steel ◽  
Water Environment ◽  
Fatigue Behaviour ◽  
Fatigue Tests ◽  
Ductile Cast Iron ◽  
Tension Test ◽  
Wet Condition ◽  
Austempered Ductile Cast Iron

In order to study the mechanism of decreasing tensile strength and elongation of Austempered Ductile Cast Iron (ADI) in the wet condition, various tension tests and impact tests were carried out. Three point bending fatigue tests were carried out on ADI and annealed 0.55% carbon steel to clarify the influence of water on fatigue strength. The main conclusions are as follow. Embrittlement by water begins when plastic deformation starts in a tension test. The fatigue limit of ADI in water showed a lower value than that in air. The influence of a water environment on fatigue behaviour was similar to that of annealed 0.55% carbon steel. Embrittlement such as that in a tension test was not observed in a fatigue test.

Fatigue Behaviour of Laser Beam Welded Circular Weld Seams under Multi-Axial Loading

2014 ◽  
Vol 891-892 ◽  
pp. 1397-1402 ◽  
Author(s):  
Martina Zimmermann ◽  
Jörg Bretschneider ◽  
Gunter Kirchhoff ◽  
Uwe Stamm ◽  
Jens Standfuss ◽  
...  
Keyword(s):  
Cast Iron ◽  
Laser Beam ◽  
Welding Process ◽  
Axial Loading ◽  
Fatigue Behaviour ◽  
Test System ◽  
Cyclic Strength ◽  
Hardened Steel ◽  
Torsional Loading ◽  
Welding Processes

With modern laser beam sources welding processes can be developed, that allow the joining of otherwise barely realisable material and geometrical constellations such as dissimilar welded, thick-walled shaft-hub joints for powertrain systems. Current design recommendations do not offer solutions to account for the cyclic strength under torsional loading for welded structures. In order to bridge the gap between cost and time consuming prototype testing and laboratory tests of basic homogeneous material samples, a test system combining axial and torsional loading was used. For this purpose application oriented test parts are designed to mimic the weld seam geometry, stiffness and heat dissipation conditions of the real structural part at its best. The dissimilar joints were realised for two material combinations: cast iron GJS-600-3 with case hardened steel 16MnCr5 and 42CrMo4 with 16MnCr5. The latter combination showed only a slightly higher cyclic strength compared to the cast iron/steel combination. A systematic optimization of the laser beam welding process leads to a fatigue behaviour under multi-axial loading conditions, where the cast iron/case hardened steel combination still met the strength specification required.

Tribological Research of Properties of Heat – Treated Cast Irons with Globular Graphite

2015 ◽  
Vol 818 ◽  
pp. 209-212 ◽  
Author(s):  
Jozef Bronček ◽  
Peter Fabian ◽  
Norbert Radek
Keyword(s):  
Cast Iron ◽  
Metal Matrix ◽  
Mechanical Energy ◽  
Basic Metal ◽  
Cast Irons ◽  
Globular Graphite ◽  
Treated Steel ◽  
Heat Treated ◽  
Properties Of Materials ◽  
Heat Treated Steel

The contribution deals with the evaluation of tribological properties of materials: isothermally heat-treated cast iron ADI, heat-treated cast iron with globular graphite HTDI with sorbitic structure of the basic metal matrix and heat-treated steel C45. The aim of the research is to gain another knowledge for the application of materials in the condition where the loss of mechanical energy and the loss of material caused by parts wear are being appeared.

Structural Changes Under Heat Treatment of High-Strength Cast Iron with Globular Graphite

2016 ◽  
Vol 58 (7-8) ◽  
pp. 383-388
Author(s):  
V. V. Tsukanov ◽  
A. I. Ziza ◽  
M. S. Mikhailov ◽  
L. K. Tsyganko ◽  
G. A. Shandyba
Keyword(s):  
Heat Treatment ◽  
Cast Iron ◽  
Structural Changes ◽  
High Strength ◽  
Globular Graphite

Cast iron with globular graphite ? A material for components used in petroleum-industry equipment

1992 ◽  
Vol 28 (11) ◽  
pp. 677-680
Author(s):  
L. A. Solntsev ◽  
R. D. Dzhabarov ◽  
O. Yu. Rafiev ◽  
Yu. A. Ishchuk
Keyword(s):  
Cast Iron ◽  
Petroleum Industry ◽  
Globular Graphite
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