Lifetime Assessment of Cylinder Heads for Efficient Heavy Duty Engines Part I: A Discussion on Thermomechanical and High-Cycle Fatigue as Well as Thermophysical Properties of Lamellar Graphite Cast Iron GJL250 and Vermicular Graphite Cast Iron GJV450

2017 ◽  
Vol 10 (2) ◽  
pp. 359-365 ◽  
Author(s):  
Thomas Seifert ◽  
Philipp von Hartrott ◽  
Kristopher Boss ◽  
Paul Wynthein
Keyword(s):  
Cast Iron ◽  
Thermophysical Properties ◽  
High Cycle Fatigue ◽  
Cycle Fatigue ◽  
Heavy Duty ◽  
Graphite Cast Iron ◽  
Lamellar Graphite

scholarly journals Study on High-Cycle Fatigue Behaviors and Fracture Mechanism of RuT450

2020 ◽  
Author(s):  
MengXiao Zhang ◽  
JianChao Pang ◽  
Meng Lingjian ◽  
Li Shouxin ◽  
Liu Qingyi ◽  
...  
Keyword(s):  
Cast Iron ◽  
Fatigue Strength ◽  
High Cycle Fatigue ◽  
Prediction Method ◽  
Threshold Value ◽  
Fatigue Properties ◽  
Cycle Fatigue ◽  
Graphite Phase ◽  
Graphite Cast Iron ◽  
Different Temperatures

Fatigue failure is the most common failure mode of structural materials. In this study, the high-cycle fatigue properties at different temperatures, fracture surface morphologies and corresponding damage mechanisms of a widely used vermicular graphite cast iron RuT450 were investigated. It is found that the fatigue strength of RuT450 decreases with the increase of temperature, and the decreasing rate is affected by the change of morphology and content of graphite. In general, the cracks initiated from the graphite phase boundary and propagated through the pearlite lamellae. In addition, according to the change of matrix micro-structure and the slight change of graphite morphology at different temperatures, and combined with the change of crack propagation threshold value under different temperature conditions, a fatigue strength prediction method for vermicular graphite cast iron at different temperatures was proposed in this work, which has high prediction accuracy.

Theory of Graphite Nucleation in Lamellar Graphite Cast Iron

2009 ◽  
Vol 3 (4) ◽  
pp. 39-47 ◽  
Author(s):  
A. Sommerfeld ◽  
B. Tonn
Keyword(s):  
Cast Iron ◽  
Graphite Cast Iron ◽  
Lamellar Graphite
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