Investigations on Microstructure and Properties of 16 wt% Cr-3 wt% B-0.6 wt% C-1 wt% Mn-Fe Alloy

Ding, Jiawei; Qiu, Xiaoming; Ding, Gang; Ruan, Yuanyuan

doi:10.3390/met8070530

Cited by 4 publications

(3 citation statements)

References 21 publications

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“…This resulted in the successive enrichment of the liquid with transition metals and the formation of several micrometers boron phases. Similar research results were presented by Branagan et al (2006) [13] and Ding et al (2018) [31]. It seems that boron carbides were the last liquid phase that crystallized and was formed after the α-Fe dendrites.…”

Section: Discussionsupporting

confidence: 84%

“…The greater mass loss is attributed to lower hardness, deterioration of the bond between the carbides and the solid solution matrix, which made it easier to remove the M7(BC)3 and M23(BC)6 hard phases from the surface. The high resistance to impact loads of the heattreated coating is attributed to the stress relieving process which increases the ductility of the material [31]. It should be noted that commercial materials for PTA surfacing contains particles of carbide ceramic mixed with a metallic matrix, which often causes additional problems in wetting the hard phase with liquid metal and leads to a reduction in fracture toughness.…”

Section: Discussionmentioning

confidence: 99%

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Characterization of a New High Abrasion and Erosion Resistance Iron-Based Alloy for Pta Hardfacing

Czupryński¹,

Poloczek²,

Urbańczyk³

2022

IJMMT

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The article presents the results of research on an innovative iron-based alloy for industrial arc surfacing using the Plasma Transferred Arc (PTA) hardfacing process. The use of high cooling rates makes it possible to obtain a structure partially similar to metallic glass. Thus, it was possible to avoid the conventional dendritic solidification, resulting in the grain refinement through a eutectoid growth of laths of bainitic ferrite. The surface layer consisted of the fine structure of a Feα, Feγ and a high-volume fraction of borocarbide phases. An even distribution of borocarbide phases in a ductile iron matrix appears to be particularly desirable for achieving high hardness and resistance to metal-mineral abrasive wear (ASTM G-65). The surface layer showed a hardness of up to 69 HRC and resistance to abrasive wear that was more than 14 times higher than of steel type AR 400. In addition, the surfacing layer is characterized by high erosion resistance (ASTM G 76-95) and resistance to impact loads up to 200 J. The developed PTA hardfacing alloy is expected to be useful in applications requiring high abrasion and erosion resistance combined with high impact strength.

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Section: Discussionsupporting

confidence: 84%

Section: Discussionmentioning

confidence: 99%

Characterization of a New High Abrasion and Erosion Resistance Iron-Based Alloy for Pta Hardfacing

Czupryński¹,

Poloczek²,

Urbańczyk³

2022

IJMMT

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“…Jian et al [ 43 , 44 ] studied the effect of manganese and deduced that adding 2.0 wt.% Mn into an Fe-B-C alloy increases its “three-body-abrasive” wear resistance under different applied loads, mostly because it enhances the fracture toughness of Fe 2 B particles. The effect of boron on the microstructure and properties of high-Cr cast irons was described in many works [ 45 , 46 , 47 , 48 ]; the increased hardness and wear resistance of the B-added alloys were highlighted.…”

Section: Introductionmentioning

confidence: 99%

Investigations of Abrasive Wear Behaviour of Hybrid High-Boron Multi-Component Alloys: Effect of Boron and Carbon Contents by the Factorial Design Method

et al. 2023

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This paper is devoted to the evaluation of the “three-body-abrasion” wear behaviour of (wt.%) 5W–5Mo–5V–10Cr-2.5Ti-Fe (balance) multi-component (C + B)-added alloys in the as-cast condition. The carbon (0.3 wt.%, 0.7 wt.%, 1.1 wt.%) and boron (1.5 wt.%, 2.5 wt.%, 3.5 wt.%) contents were selected using a full factorial (32) design method. The alloys had a near-eutectic (at 1.5 wt.% B) or hyper-eutectic (at 2.5–3.5 wt.% B) structure. The structural micro-constituents were (in different combinations): (a) (W, Mo, and V)-rich borocarbide M2(B,C)5 as the coarse primary prismatoids or as the fibres of a “Chinese-script” eutectic, (b) Ti-rich carboboride M(C,B) with a dispersed equiaxed shape, (c) Cr-rich carboboride M7(C,B)3 as the plates of a “rosette”-like eutectic, and (d) Fe-rich boroncementite (M3(C,B)) as the plates of “coarse-net” and ledeburite eutectics. The metallic matrix was ferrite (at 0.3–1.1 wt.% C and 1.5 wt.% B) and “ferrite + pearlite” or martensite (at 0.7–1.1 wt.% C and 2.5–3.5 wt.% B). The bulk hardness varied from 29 HRC (0.3 wt.% C–1.5 wt.% B) to 53.5 HRC (1.1 wt.% C–3.5 wt.% B). The wear test results were mathematically processed and the regression equation of the wear rate as a function of the carbon and boron contents was derived and analysed. At any carbon content, the lowest wear rate was attributed to the alloy with 1.5 wt.% B. Adding 2.5 wt.% B led to an increase in the wear rate because of the appearance of coarse primary borocarbides (M2(B,C)5), which were prone to chipping and spalling-off under abrasion. At a higher boron content (3.5 wt.%), the wear rate decreased due to the increase in the volume fraction of the eutectic carboborides. The optimal chemical composition was found to be 1.1 wt.% C–1.5 wt.% B with a near-eutectic structure with about 35 vol.% of hard inclusions (M2(B,C)5, M(C,B), M3(C,B), and M7(C,B)3) in total. The effect of carbon and boron on the abrasive behaviour of the multi-component cast alloys with respect to the alloys’ structure is discussed, and the mechanism of wear for these alloys is proposed.

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Influence of boron addition on microstructure and mechanical properties of medium-Mn advanced high-strength steel

Zabihi-Gargari,

Emami,

Shahverdi

et al. 2024

Journal of Materials Research and Technology

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Investigations on Microstructure and Properties of 16 wt% Cr-3 wt% B-0.6 wt% C-1 wt% Mn-Fe Alloy

Cited by 4 publications

References 21 publications

Characterization of a New High Abrasion and Erosion Resistance Iron-Based Alloy for Pta Hardfacing

Characterization of a New High Abrasion and Erosion Resistance Iron-Based Alloy for Pta Hardfacing

Investigations of Abrasive Wear Behaviour of Hybrid High-Boron Multi-Component Alloys: Effect of Boron and Carbon Contents by the Factorial Design Method

Influence of boron addition on microstructure and mechanical properties of medium-Mn advanced high-strength steel

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