Free ferrite in pearlitic ductile iron—morphology and its influence on mechanical properties

Galarreta, I; Boeri, Roberto Enrique; Sikora, Jorge Antonio

doi:10.1080/13640461.1997.11819677

Cited by 21 publications

(11 citation statements)

References 1 publication

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“…If the austenitising temperature is in the subcritical range (α + γ + G) below the lower critical temperature, the matrix will contain pre-eutectoid ferrite ( Fig. 1) [4]. The result of this phenomenon is the reduced strength and hardness of the casting.…”

Section: Introductionmentioning

confidence: 99%

ADI after Austenitising from Intercritical Temperature

Kluska-Nawarecka¹,

Regulski²,

Kowalska³

2013

Archives of Foundry Engineering

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ADI subjected to austenitising at intercritical temperatures contains in its matrix the precipitates of pre-eutectoid ferrite. Studies were carried out on the ductile iron of the following chemical composition: C = 3,80%, Si = 2,30%, Mn = 0,28%, P = 0,060%, S = 0,010%, Mg = 0,065%, Ni = 0,60%, Cu = 0,70%, Mo = 0,21% This cast iron was austenitised at three different temperatures, i.e. 800, 815 and 830 o C and austempered at 360 and 380 o C. For each variant of the cast iron heat treatment, the mechanical properties, i.e. YS, TS, EL and Hardness, were measured, and structure of the matrix was examined. Higher plastic properties were obtained owing to the presence of certain amount of pre-eutectoid ferrite. The properties were visualised using fuzzy logic model in a MATLAB. software.

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Section: Introductionmentioning

confidence: 99%

ADI after Austenitising from Intercritical Temperature

Kluska-Nawarecka¹,

Regulski²,

Kowalska³

2013

Archives of Foundry Engineering

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“…Taking into account the results reported by Galarreta et al [15] for pearlitic DI, "dual-phase ADI" matrices are expected to optimize elongation and toughness with respect to conventional completely ausferritic ADI microstructures. This is the main objective of this new line of research currently being undertaken by the authors.…”

Section: Influence Of Chemical Composition On Phase Morphologiesmentioning

confidence: 96%

“…Galarreta et al [15] reported the results of mechanical tests performed on pearlitic matrices containing a continuous net of ferrite. The authors revealed a noticeable enhancement of the mechanical properties in this kind of microstructure, with respect to completely pearlitic matrices, and attributed such an improvement to the fact that the fine ferrite net favours elongation and toughness, leaving strength and hardness almost unaffected.…”

Section: Review Of Concepts On Recrystallized and Non-recrystallized mentioning

confidence: 99%

Influence of chemical composition and holding time on austenite (γ)→ferrite (α) transformation in ductile iron occurring within the intercritical interval

Basso

Martinez

Sikora

2011

Journal of Alloys and Compounds

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“…Furthermore, the tensile strength, among the mechanical properties already evaluated in these varieties of DI, could be mentioned, bend, impact Charpy (notched and unnotched), fracture toughness (K IC ), and response to cyclic loads 2–7 …”

Section: Introductionmentioning

confidence: 99%

Evaluation of quenched ductile iron mechanical behavior under compressive loads

Martinez

2021

Mat Design & Process Comms

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Among the mechanical properties already evaluated in ductile iron, could be mentioned tensile strength, bend, impact Charpy, fracture toughness and fatigue. However, an aspect no longer explored over the mechanical properties of these materials is concerned with the behavior under compressive loads. In this work, compressive properties are evaluated on quenched ductile iron, which is considered at first as an appropriate alternative for mechanical applications with this kind of load. The evaluation was performed by means of compression tests on cylindrical samples. Further application of compressive loads was explored using the tests known as the Brazilian test, which involves the use of a disc compressed along the diameter line. The results obtained are the first attempt of a complete study involving the different choices of ductile iron.

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Free ferrite in pearlitic ductile iron—morphology and its influence on mechanical properties

Cited by 21 publications

References 1 publication

ADI after Austenitising from Intercritical Temperature

ADI after Austenitising from Intercritical Temperature

Influence of chemical composition and holding time on austenite (γ)→ferrite (α) transformation in ductile iron occurring within the intercritical interval

Evaluation of quenched ductile iron mechanical behavior under compressive loads

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