Preliminary study for flaw detection in nodular cast iron by cyclic loading and thermography

2013 ◽  
Vol 56 ◽  
pp. 28-37 ◽  
Author(s):  
Wolfgang Tillmann ◽  
Xiaoqun Feng ◽  
Gottfried Fischer ◽  
Jens Nellesen
Keyword(s):  
Cast Iron ◽  
Cyclic Loading ◽  
Flaw Detection ◽  
Nodular Cast Iron ◽  
Preliminary Study

scholarly journals PRELIMINARY STUDY ON EFFECT OF ROD GEOMETRY IN FHPP BETWEEN FE55006 NODULAR CAST IRON AND SAE 8620 STELL

2019 ◽  
Vol 16 (31) ◽  
pp. 642-650
Author(s):  
Douglas MARTINAZZI ◽  
Guilherme V. B LEMOS ◽  
Renan M LANDELL ◽  
Diogo T BUZZATTI ◽  
André BRUSIUS ◽  
...  
Keyword(s):  
Cast Iron ◽  
Base Material ◽  
Nodular Cast Iron ◽  
Lower Surface ◽  
Fusion Welding ◽  
Plastic State ◽  
Cast Irons ◽  
Preliminary Study ◽  
Sae 8620 Steel ◽  
Made In

Nodular cast irons are an excellent alternative in manufacturing process of axels due to their characteristics and good mechanical properties. However, the necessity of joining the axels to the gears and other components, made in carbon steel, is a great challenge. Traditional fusion welding methods applied to dissimilar ferrous materials are not deeply studied. In this context, it is well known that different materials have distinct melting points which can cause difficulty in welding, besides of defects formation from solidification. Therefore, modern joining processes such as Friction Hydro Pillar Processing (FHPP) are a great alternative. In this technology, a consumable rod is rotated against to a base material, generating the heat due to the friction, promoting materials in the plastic state and then producing the weld. Hence, this work presents a preliminary study of FHPP between the FE55006 nodular cast iron and SAE 8620 steel and evaluates the rod geometry influence on microstructure and surface stresses of the welded joints. Two rod geometries were used and two welds were further produced. The results indicated that an increase in the rod contact area promoted a lower surface stress as well as a better welded joint.

scholarly journals Fatigue Properties of Nodular Cast Iron at Low Frequency Cyclic Loading

2017 ◽  
Vol 62 (4) ◽  
pp. 2205-2210 ◽  
Author(s):  
A. Vaško
Keyword(s):  
Cast Iron ◽  
Cyclic Loading ◽  
High Frequency ◽  
Stress Ratio ◽  
Low Frequency ◽  
Nodular Cast Iron ◽  
Fatigue Tests ◽  
Fatigue Properties ◽  
Charge Composition ◽  
Cast Irons

Abstract Three melts of ferrite-pearlitic nodular cast iron with different charge composition were used for fatigue tests. Wöhler fatigue curves and fatigue strength were obtained, and microstructure and fracture surfaces were investigated. The aim of the paper is to determine the influence of charge composition on microstructure, mechanical and fatigue properties of synthetic nodular cast irons and their micromechanisms of failure. Fatigue tests were realised at low frequency sinusoidal cyclic push-pull loading (stress ratio R = −1) at ambient temperature (T = 20 ±5°C). They were carried out with using the fatigue experimental machine Zwick/Roell Amsler 150HFP 5100 at frequency f ≈ 120 Hz. The results of fatigue tests at low frequency cyclic loading are compared with fatigue properties at high frequency cyclic loading.

scholarly journals Comparison of Fatigue Properties of Nodular Cast Iron at Low and High Frequency Cyclic Loading

2017 ◽  
Vol 177 ◽  
pp. 576-581 ◽  
Author(s):  
Alan Vaško ◽  
Milan Vaško ◽  
Juraj Belan ◽  
Eva Tillová
Keyword(s):  
Cast Iron ◽  
Cyclic Loading ◽  
High Frequency ◽  
Nodular Cast Iron ◽  
Fatigue Properties

scholarly journals Microstructure and Fatigue Properties of Nodular Cast Iron at Low Frequency Cyclic Loading

2016 ◽  
Vol 16 (5) ◽  
pp. 1188-1193 ◽  
Author(s):  
Alan Vaško ◽  
Juraj Belan ◽  
Lenka Markovičová ◽  
Eva Tillová
Keyword(s):  
Cast Iron ◽  
Cyclic Loading ◽  
Low Frequency ◽  
Nodular Cast Iron ◽  
Fatigue Properties

Effective properties of nodular cast-iron: A multi-scale computational approach

2014 ◽  
Vol 82 ◽  
pp. 378-390 ◽  
Author(s):  
F.D. Carazo ◽  
S.M. Giusti ◽  
A.D. Boccardo ◽  
L.A. Godoy
Keyword(s):  
Cast Iron ◽  
Effective Properties ◽  
Nodular Cast Iron ◽  
Computational Approach ◽  
Multi Scale
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