Surface modification of Al–12.6Si alloy by high current pulsed electron beam

Hao, Yuanyuan; Gao, Bo; Tu, Gan Feng; Cao, Hongjun; Hao, Shuai; Chen, Dong

doi:10.1016/j.apsusc.2011.04.104

Cited by 58 publications

(11 citation statements)

References 23 publications

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“…Besides, some nanoscale carbides and precipitates are also visible at the boundary or the triple junctions of the cells. Such kind 7 of nanocell/grain structure was also observed in other steels, Mg, Al alloys treated by pulsed electron beams [46][47][48][49][50]. The presence of these metastable homogeneous layers with special nanostructures formed by the LEHCPEB treatment at the top surface accounts for the improved corrosion resistance of the treated samples.…”

Section: Improving Corrosion Resistance Of D2 Steel By Lehcpebsupporting

confidence: 52%

Nanostructure Formations and Improvement in Corrosion Resistance of Steels by Means of Pulsed Electron Beam Surface Treatment

Zhang

Zou

Grosdidier

2013

Journal of Nanomaterials

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The corrosion of steels has long been the topic for materials scientists. It is established that surface treatment is an efficient way to improve the corrosion resistance of steels without changing the bulk properties and with low costs. In the present paper, different kinds of surface treatment techniques for steels are briefly reviewed. In particular, the surface modification involving nanostructure formations of steels by using a low energy high pulsed electron beam (LEHCPEB) treatment is lightened in the case of an AISI 316L stainless steel and D2 steel. The overall results demonstrate the high potential of the LEHCPEB technique for improving the corrosion performance of steels.

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Section: Improving Corrosion Resistance Of D2 Steel By Lehcpebsupporting

confidence: 52%

Nanostructure Formations and Improvement in Corrosion Resistance of Steels by Means of Pulsed Electron Beam Surface Treatment

Zhang

Zou

Grosdidier

2013

Journal of Nanomaterials

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“…Indeed, further theoretical and experimental analyses concerning the LEHCPEB are required to fully understand the growth mechanisms of these grains since it is clear that their nature cannot be explained by conventional growth mechanisms. The fine austenite structure contributes to the improved tribological properties and corrosion resistance [29][30][31][32][33]. It is already established that the metastable austenite can transform to martensite during wear process and thereby hardens the worn zone and improves the wear resistance.…”

Section: Discussionmentioning

confidence: 99%

Formation of Surface Nano‐ and Textured Austenite Induced by Pulsed Electron Beam Irradiation under Melting Mode

Zhang

Zou

2013

Journal of Nanomaterials

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We report in this paper an interesting phenomenon associated with low-energy high-current pulsed electron beam (LEHCPEB) treatment: surface nanograined and textured austenite formation under the melting treatment mode. The treatment induces superfast heating and melting followed by a rapid solidification and cooling of the material surfaces. As a result, nano-structured surface layers can be achieved quite easily. Examples of nanoaustenite formation with special texture state in the modified surface layer of AISI D2 steel and NiTi alloy will show the potential for surface nanocrystallization of materials with improved properties by LEHCPEB technique.

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“…As a high-density energy source, HCPBE can achieve energy deposition on the material surface in a short time, irradiating the metal surface for rapid heating and cooling [11][12][13][14][15]. According to the literature, HCPEB treatment can refine the surface microstructure of metal, induce the melting of the aluminum matrix on the surface, fill the pores of the material and greatly improve the wear resistance, hardness and other properties [16][17][18][19][20][21]. However, few research works have reported on the effects of electron beams on the electrical conductivity of a treated sample.…”

Section: Introductionmentioning

confidence: 99%

Effect of High-Current Pulsed Electron Beam on Properties of Graphene-Modified Aluminum Titanium Carbide Composites

et al. 2022

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High-current pulse electron beam (HCPEB) is an advanced surface modification technology developed in recent decades. This paper focuses on the effect of 0.3 wt.% graphene on the electrical conductivity and microhardness of HCPEB-treated Al-20TiC composites. The SEM results show that the titanium carbide was uniformly distributed in the aluminum matrix of the initial sample. Conversely, the graphene showed a small aggregation, and there were holes and cracks on the top surface of the sample. After HCPEB modification, the agglomeration of graphene gradually improved, and the number of surface pores reduced. The X-ray diffraction results show that after HCPEB treatment, the aluminum diffraction peak widened and shifted to a higher angle and the grain was significantly refined. Compared with the initial Al-20TiC composite samples, the conductivity of graphene-modified HCPEB-treated sample increased by 94.3%. The microhardness test results show that the microhardness of the graphene-modified HCPEB-treated sample increased by 18.4%, compared with the initial Al-20TiC composite samples. This enhancement of microhardness is attributed to the joint effects of fine grain strengthening, dispersion strengthening of the second phase, solution strengthening and dislocation strengthening. In brief, HCPEB has good application prospects for powder metallurgy in future.

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Surface modification of Al–12.6Si alloy by high current pulsed electron beam

Cited by 58 publications

References 23 publications

Nanostructure Formations and Improvement in Corrosion Resistance of Steels by Means of Pulsed Electron Beam Surface Treatment

Nanostructure Formations and Improvement in Corrosion Resistance of Steels by Means of Pulsed Electron Beam Surface Treatment

Formation of Surface Nano‐ and Textured Austenite Induced by Pulsed Electron Beam Irradiation under Melting Mode

Effect of High-Current Pulsed Electron Beam on Properties of Graphene-Modified Aluminum Titanium Carbide Composites

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