Young’s Modulus Enhancement and Measurement in CNT/Al Nanocomposites

Yu, Ziyun; Tan, Zhanqiu; Fan, Genlian; Lin, Renbang; Xiong, Ding‐Bang; Guo, Qiang; Su, Yishi; Li, Zhiqiang; Zhang, Di

doi:10.1007/s40195-018-0730-8

Cited by 13 publications

(3 citation statements)

References 46 publications

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“…Both of them had a secondary hardening peak at approximately 520 8C, while 1Ni had stronger secondary hardening effects than 0Ni in the range of 500 8C-560 8C. According to available lit- erature, secondary hardening has a close relationship with the precipitation of M 2 C and MC type carbides, of which M 2 C type carbides play a more significant role [12][13][14][15][16]. Because MC type carbides precipitate at higher tempering temperature above 520 8C [17].…”

Section: Tempering Curvesmentioning

confidence: 98%

Influence of nickel on secondary hardening of a modified AISI H13 hot work die steel

Xia

Pengpeng

Yan

et al. 2019

Materialwissenschaft Werkst

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This paper focuses on the effects of nickel on secondary hardening of a modified H13 hot work die steel. Both the non‐nickel steel and the nickel‐added steel get a secondary hardening peak at 520 °C, and the secondary hardening peak trends to increase in the nickel‐added steel. On the basis of scanning electron microscope and transmission electron microscope observation, the rise of the secondary hardening peak is in connection with the precipitation of M3C type carbides. More strip‐shaped and needle‐shaped M3C type carbides precipitated from matrix. By means of internal friction, the result suggests that nickel does not affect the position of the Snoek‐Kê‐Köster peak, but the height of Snoek‐Kê‐Köster peak of the nickel‐added steel is higher, which indicates nickel enhances the interaction between dislocations and interstitial atoms, promoting the precipitation of carbides.

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Section: Tempering Curvesmentioning

confidence: 98%

Influence of nickel on secondary hardening of a modified AISI H13 hot work die steel

Xia

Pengpeng

Yan

et al. 2019

Materialwissenschaft Werkst

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“…However, those studies just focused on the relation between TC and the volume fraction of G f and failed to quantitatively study the effect of G f inclination angle. Flake powder metallurgy is a newly developed method to fabricate composites [16][17][18], and Chamroune et al [8] fabricated G f /Al composites with this method. Using Al flake particle as the matrix while the milling time was fixed at 30 min, he found that the in-plane TC improved slightly compared to the spherical Al matrix, but fairly remarkable (from ~ 400 to ~ 450 Wm −1 K −1 ) when the fraction of G f is 50 vol%.…”

Section: Introductionmentioning

confidence: 99%

Governing the Inclination Angle of Graphite Flakes in the Graphite Flake/Al Composites by Controlling the Al Particle Size via Flake Powder Metallurgy

Liu

Wang

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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The inclination angle of the flake particle has a significant impact on the in-plane thermal conductivity of composites. The graphite flake/Al composites (50 vol%) with different inclination angles were fabricated via flake powder metallurgy, and the results show that with increasing the size of Al particle from 25.6 to 50.7 μm, the inclination angle of graphite flake decreases from 7.3° to 4.4°, while the in-plane thermal conductivity of composites increases from 473 to 555 Wm −1 K −1 . Based on the rules of mixture, an effective model was established to qualify and quantify the relation between the inclination angle and the in-plane thermal conductivity of the corresponding composites. This model can also be applied to other flake particle-reinforced composites.

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“…Controlling the metal solidification process is one of the effective ways to refine solidification structure and improve the ingot properties [1]. In recent years, using electromagnetic field to modify solidification structure has attracted more and more attention because this technology is convenient and environmentally friendly [2][3][4]. Pulsed magneto-oscillation (PMO) is a newly developed metal solidification control technology after electric current pulse [5] and pulsed magnetic field [6].…”

Section: Introductionmentioning

confidence: 99%

Improving the Solidified Structure by Optimization of Coil Configuration in Pulsed Magneto-Oscillation

Zhao

Han

et al. 2018

Acta Metall. Sin. (Engl. Lett.)

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Using both numerical and experimental methods, we studied the effect of coil configuration of pulsed magneto-oscillation (PMO) on distribution of electromagnetic field, flow field and solidification structure with the same pulse current parameters in Al ingots. We designed and constructed three types of coils: surface pulsed magneto-oscillation, hot-top pulsed magneto-oscillation (HPMO) and combined pulsed magneto-oscillation (CPMO). PMO treatment refined the solidification structure in all the ingots. The configuration of the PMO, however, introduced differences in magnetic field intensity, electromagnetic force, Joule heat, flow field, equiaxed grain zone, grain size and growth direction of columnar grains. The largest equiaxed grain zone was found in CPMO treated ingot, and the smallest grain size was found in both HPMO and CPMO treated ingots. Numerical simulation indicated that difference in electromagnetic field and flow field resulted in differences in solidification structure. HPMO is more advantageous over others for large ingot production.

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Young’s Modulus Enhancement and Measurement in CNT/Al Nanocomposites

Cited by 13 publications

References 46 publications

Influence of nickel on secondary hardening of a modified AISI H13 hot work die steel

Influence of nickel on secondary hardening of a modified AISI H13 hot work die steel

Governing the Inclination Angle of Graphite Flakes in the Graphite Flake/Al Composites by Controlling the Al Particle Size via Flake Powder Metallurgy

Improving the Solidified Structure by Optimization of Coil Configuration in Pulsed Magneto-Oscillation

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