Effect of Boron and Heat Treatment on Mechanical Properties of White Cast Iron for Mining Application

Zeytin, Havva Kazdal; Yildirim, Hakan; Berme, Banu; Duduoĝlu, Selim; Kazdal, Gürkan; Deniz, Adem

doi:10.1016/s1006-706x(11)60114-3

Cited by 25 publications

(4 citation statements)

References 15 publications

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“…Additionally, heat treatment can also be applied to soen the material and enhance the cutting performance of the alloy. 5 The as-cast matrix of high chromium cast iron typically consists of a signicant proportion of residual austenite and a minor amount of sheet martensite. [6][7][8] The reason for the formation of residual austenite is due to the fast cooling rate of the casting, the element is not enough to diffuse, resulting in a large amount of carbon and alloying elements in the matrix, which makes the material hardenability increase at the same time, but also makes the martensitic phase transition temperature (M s ) drop below room temperature, and the austenitic structure is retained to room temperature.…”

Section: Introductionmentioning

confidence: 99%

Effect of destability time on microstructure and properties of hypoeutectic high chromium cast iron

Xiong,

Liu,

Zeng

et al. 2024

RSC Adv.

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Section: Introductionmentioning

confidence: 99%

Effect of destability time on microstructure and properties of hypoeutectic high chromium cast iron

Xiong,

Liu,

Zeng

et al. 2024

RSC Adv.

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“…These treatments bring about noteworthy enhancements in the matrix structure and the distribution of secondary carbides within hypereutectic high-chromium cast iron. As a result, a more harmonious alignment between the matrix and carbides is achieved, leading to a substantial amelioration of mechanical properties [12][13][14][15]. Numerous scholars have extensively explored the quenching and tempering processes pertaining to hypereutectic high-chromium cast iron.…”

Section: Introductionmentioning

confidence: 99%

Effect of tempering temperature on microstructure and properties of low silicon hypereutectic high chromium cast iron

Gu,

Liu,

et al. 2024

Materialwissenschaft Werkst

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High‐chromium cast iron is a good wear‐resistant material. Its heat treatment regime has an important influence on the evolution of its microstructure and properties. This study investigates the microstructural attributes and properties of Fe–4.0 C–35.0Cr–0.5Si (wt.%) low‐silicon hypereutectic high‐chromium cast iron subsequent to quenching at 1050 °C, followed by tempering at diverse temperatures. The microstructure was examined using optical microscopy, scanning electron microscopy, and X‐ray diffractometry across varied tempering conditions. Furthermore, microhardness and wear resistance were conducted via a microhardness tester and a wear testing machine. The results show that the quenching heat treatment promotes the transformation of the matrix from austenite to martensite, while also promoting the precipitation of secondary carbides of M23C6‐type. The subsequent tempering heat treatment engenders transformations involving retained austenite to martensite, amplifies the precipitation and enlargement of secondary carbides, and induces martensite decomposition. As the tempering temperature increases, primary and eutectic carbides exhibit minimal changes, while the secondary carbide morphology evolves from granular to reticular. The matrix composition predominantly comprises martensite, interspersed with a minor fraction of austenite. It is worth noting that the alloy has the highest hardness and wear resistance after quenching at 1050 °C and then tempering at 400 °C.

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“…Currently, there are a large number of abrasion-resistant alloys, of which high-chromium Nihard cast irons and Cr-Mo steels are considered materials with excellent resistance to wear [1,2]. Such applications are typical of but not exclusive to the metallurgy and mining industries (waste disposal of by-products, mining excavations, etc.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Hardness, Sliding Wear and Strength of a Hypoeutectic White Iron with 25%Cr after Heat Treatments

González-Pociño

Lozano

Álvarez-Antolín

et al. 2021

Metals

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Hypoeutectic white cast irons with a high chrome content are commonly used in the industrial mining sector where there is a demand for both high resistance to adhesive wear and an acceptable toughness for the absorption of impacts and falls of diverse materials. Through the application of a design of experiment (DoE) technique, factors related to thermal treatment are analyzed with respect to resistance to sliding wear, maximum rupture stress and toughness. The results show that, in order to increase resistance to adhesive wear, it is convenient to use destabilization temperatures of 1050 °C and tempering of two hours at 400 °C. This foments a very hard martensite and a high proportion of highly alloyed retained austenite, which, with low tempering, achieves a precipitation of carbides from this austenite with hardly any loss of hardness of the martensite. In order to increase the energy which this material is capable of absorbing until breakage, furnace cooling set at 150 °C followed by tempering at 550 °C would be favorable. Slower cooling implies a greater quantity of conditioned retained austenite, so that, following this, it may be transformed into lower bainite with a high density of finely dispersed precipitated carbides. Furthermore, this tempering also allows the transformation of martensite into ferrite with finely dispersed carbides.

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Effect of Boron and Heat Treatment on Mechanical Properties of White Cast Iron for Mining Application

Cited by 25 publications

References 15 publications

Effect of destability time on microstructure and properties of hypoeutectic high chromium cast iron

Effect of destability time on microstructure and properties of hypoeutectic high chromium cast iron

Effect of tempering temperature on microstructure and properties of low silicon hypereutectic high chromium cast iron

Evaluation of Hardness, Sliding Wear and Strength of a Hypoeutectic White Iron with 25%Cr after Heat Treatments

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