Microstructure and wear properties of Fe–15Cr–2.5Ti–2C–xBwt.% hardfacing alloys

Liu, Dashuang; Liu, Renpei; Wei, Yanhong; Ma, Yan; Zhu, Kun

doi:10.1016/j.apsusc.2013.01.169

Cited by 62 publications

(27 citation statements)

References 19 publications

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“…The more solidification latent heat is released due to the formation of Ti(C,B), the higher nucleation rate of austenite grains due to the reduction of the undercooling of solid-liquid interface. On the other hand, it is reported that the Ti(C,B) particles can promote heterogeneous nucleation of austenite, which further enhances the nucleation rate of austenite grains during solidification [25]. decreases with increasing distance from the fusion zone and forms a series of isotherm lines in the surface of hardfacing layer [32].…”

Section: Microstructure Of the Hardfacing Layermentioning

confidence: 99%

“…Besides, boron was also added into the iron base hardfacing alloy to improve their hardness and wear resistance due to the formation of harder carbides and borides. Liu et al [25] investigated the effect of boron content on microstructure and wear properties of hardfacing alloys and discovered that boron could increase the carbide volume fraction (CVF) and improve the wear resistance. Although some progresses on the study about the influence of B on the hardfacing layer have been achieved [26,27], the effect of different boron contents on the microstructure and wear properties of hardfacing layer remains lack of in-depth research.…”

Section: Introductionmentioning

confidence: 99%

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Effect of B Content on Microstructure and Wear Resistance of Fe-3Ti-4C Hardfacing Alloys Produced by Plasma-Transferred Arc Welding

Zong

Guo

et al. 2019

Coatings

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The Fe-3Ti-xB-4C (x = 1.71, 3.42, 5.10, 6.85 wt. %) hardfacing alloys are deposited on the surface of a low-carbon steel by plasma transferred arc (PTA) weld-surfacing process. Microstructure, hardness and wear resistance have been investigated using scanning electron microscopy (SEM), X-ray diffraction (XRD), Rockwell hardness tester and abrasive wear testing machine, respectively. The results show that the microstructure in all alloys is composed of austenite, martensite, Fe23(C,B)6, Ti(C,B) and Fe2B. The volume fraction of eutectic borides and Ti(C,B) carbides increases with increasing B content. Many brittle bulk Fe2B phase arises when the boron content increases to 6.85%, which causes the formation of microcracks in the hardfacing layer. The microhardness of the hardfacing alloys is significantly improved with the B addition, however, the wear resistance of hardfacing alloys increases firstly and then decreases with increasing of B content. The hardfacing alloy with the 5.10% B content has the best wear resistance, which is attributed to high volume fraction of eutectic borides and fine Ti(C,B) particles distributed in the austenite and lath martensite matrix with high hardness and toughness. The formation of brittle bulk Fe2B particles in the hardfacing alloy with the 6.85% B leads to the fracture and spalling of hard phases during wear, thus, reducing the wear resistance.

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Section: Microstructure Of the Hardfacing Layermentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of B Content on Microstructure and Wear Resistance of Fe-3Ti-4C Hardfacing Alloys Produced by Plasma-Transferred Arc Welding

Zong

Guo

et al. 2019

Coatings

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“…The phases desired in microstructure are as follows: WC, TiC, SiC, Cr 7 C 3 , Fe 3 C, FeB, and Fe 2 B. The alloying elements added to obtain these phases include such elements as: Ti, Nb, Cr, V, Mo, W, and B [13,14]. Modification of the microstructure affects the change of mechanical properties of hard coatings, which in turn affects the improvement of tribological properties.…”

Section: Introductionmentioning

confidence: 99%

Wear Characteristics of Hardfacing Coatings Obtained by Tungsten Inert Gas Method

Dziedzic¹,

Jóźwik²,

Barszcz³

et al. 2019

Adv. Sci. Technol. Res. J.

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This paper evaluates the wear characteristics of hardfacing coatings. Regenerative hardfacing coatings were applied with the TIG (Tungsten Inert Gas) method. The solid welding wires were used to obtain the coatings marked as: EL-500 HB, EL-650 HB, and EL-3348. The tribological analysis of samples was conducted at room temperature. The wear rate was evaluated with a THT 1000 Anton Parr ball-on-disc tribotester, in accordance with the ASTM G-133 standard. The counterbody (static partner) consisted of balls with the diameter of 6 mm made of Al2O3. The test was performed with the sliding speed of the friction pair 0.4 m/s, track radius 10 mm, normal load 20 N, acquisition rate 10 Hz and sliding distance 2000 m. During the test, the friction coefficient and wear rate were recorded. The multi-criteria assessment of the construction materials discussed, while taking into account five criteria, showed that EL-3348 HB is the best material. Computer applications were used for multi-criteria assessment and statistical processing of data.

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“…En estos tipos de recubrimientos duros se ha evaluado la influencia que la composición química tiene en cuanto a las propiedades del recubrimiento, en este sentido se ha analizado la influencia que tiene el cromo (Cr) y el tungsteno (W) en la resistencia al desgaste abrasivo [5,6], además de las variables mencionadas, se encuentra un gran interés en estudiar la relación existente entre la entrada de corriente, definida por el amperaje y las propiedades antidesgaste del recubrimiento obtenido.…”

Section: Introductionunclassified

Influencia de la microestructura en el comportamiento a desgaste abrasivo de depósitos de soldadura antidesgaste aplicados sobre sustratos de acero de baja aleación y bajo carbono

Cepeda

Espejo

2019

DYNA

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En la reconstrucción de piezas de maquinarias es esencial determinar la mejor opción en cuanto a material depositado por soldadura para recuperación de geometrías perdidas se refiere. El presente trabajo se desarrolló para mejorar las aplicaciones de recubrimientos duros y materiales de relleno para la reconstrucción de “sprockets”, pero que se pueda extrapolar al uso en industrias de diferente tipo. Se tomaron en cuenta dos (2) factores, material depositado y temperatura de aplicación, que afectan las características finales de los recubrimientos duros aplicados por soldadura. Los resultados obtenidos de la aplicación del ensayo de desgaste fueron pérdida en peso en milímetros cúbicos (mm3) del material, lo cual brindó la resistencia al desgaste de cada una de las capas depositadas. Tomando la probeta que más se acercó al promedio obtenido del ensayo de desgaste se cortó para caracterizarla microestructuralmente, tomar mediciones de microdureza en zona cercana a la cara de desgaste, analizar la superficie por microscopia SEM, medir la composición química en la capa desgastada y determinar su estructura por difracción de rayos X. Los recubrimientos obtenidos a partir de electrodos con altos contenidos de cromo mostraron las mejores propiedades antidesgaste, seguidos de los recubrimientos aplicados con electrodos con contenidos de manganeso del 15% (aceros Hadfield) y en menores valores los recubrimientos aplicados con electrodos de bajo carbono y baja aleación mostraron los resultados más bajos según las condiciones de laboratorio aplicadas.

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Microstructure and wear properties of Fe–15Cr–2.5Ti–2C–xBwt.% hardfacing alloys

Cited by 62 publications

References 19 publications

Effect of B Content on Microstructure and Wear Resistance of Fe-3Ti-4C Hardfacing Alloys Produced by Plasma-Transferred Arc Welding

Effect of B Content on Microstructure and Wear Resistance of Fe-3Ti-4C Hardfacing Alloys Produced by Plasma-Transferred Arc Welding

Wear Characteristics of Hardfacing Coatings Obtained by Tungsten Inert Gas Method

Influencia de la microestructura en el comportamiento a desgaste abrasivo de depósitos de soldadura antidesgaste aplicados sobre sustratos de acero de baja aleación y bajo carbono

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