Effects of ball milling parameters on microstructural evolution and mechanical properties of W-3% Y composites

Zhao, Mi; Zhou, Zhangjian; Tan, Jieqing; Ding, Qingming; Zhong, Minlin

doi:10.1016/j.jnucmat.2015.05.018

Cited by 9 publications

(4 citation statements)

References 23 publications

(20 reference statements)

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“…Recent research has shown that the refinement of tungsten grain size can improve its mechanical properties, such as the enhancement of its ductility [9][10][11][12]. Many methods have been proposed to refine the grain size, such as equal channel angular extrusion (ECAE) [13,14], high-pressure torsion (HPT) [15,16], accumulative roll bonding (ARB) [17,18], surface mechanical attrition treatment (SMAT) [19,20], and high-energy ball milling [21][22][23][24][25][26].…”

Section: Introductionmentioning

confidence: 99%

“…Both Oda and Ameyama selected a low milling speed of 200 rpm and small BPR (3.6:1 and 10:1) in their refinement process [21,22]. Zhao et al used the MA method to ball mill W-3 wt % Y, and the grain size of tungsten was decreased from 1675 nm to 594 nm after 30 h of ball milling with a milling speed of 380 rpm [24]. Chen et al used the MA method to refine the grain of W-15 wt % Nb alloy and obtained tungsten with a grain size of 28.3 nm when the rotation speed was 400 rpm [25].…”

Section: Introductionmentioning

confidence: 99%

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Effect of Ball Milling Parameters on the Refinement of Tungsten Powder

Liang

et al. 2018

Metals

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The high-energy ball milling method was adopted to explore the influence of ball milling parameters, such as milling speed and additive amounts of process control agent (PCA) on tungsten powder. The morphology and microstructure of tungsten powder in the process of refinement were characterized by field-emission scanning electron microscope (FE-SEM), field-emission transmission electron microscope (FE-TEM), and X-ray diffractometer (XRD). Results revealed that the ball milling process and the refinement of tungsten particle and grain can be largely influenced by these two parameters. The milling efficiency was found to be highest with the milling speed of 700 rpm and additive amounts of 8% PCA. The mechanisms for the effect of these two parameters and milling time on the refinement process were discussed. Nanocrystalline tungsten powder with a particle size and grain size smaller than 100 nm was obtained, and the grain size of 5-15 nm was fabricated successfully under the highest milling efficiency conditions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Ball Milling Parameters on the Refinement of Tungsten Powder

Liang

et al. 2018

Metals

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“…This result affirms our expectation that the addition of Y will consume the harmful impure oxygen. Our previous work on Y-alloyed tungsten also demonstrated this phenomenon [ 37 ]. Figure 5 d shows the dispersed particle size within the grain.…”

Section: Resultsmentioning

confidence: 63%

“…The mixed powders were put into WC jars of 500 mL in volume, then mechanically alloyed (MA) in a horizontal planetary ball mill (QM-WX, Instrument Factory of Nanjing University, China) for 40 h under an argon atmosphere. The milling time and other milling parameters were determined via a literature review and an assessment of our previous works [ 17 , 36 , 37 ]. The material of the milling balls was TZM alloy.…”

Section: Methodsmentioning

confidence: 99%

The Effect of Cr Addition on the Strength and High Temperature Oxidation Resistance of Y2O3 Dispersion Strengthened Mo Composites

Guan,

Lv,

Ding

et al. 2024

Materials

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Y2O3 dispersion-strengthened Molybdenum (Mo) composites were prepared by the mechanical alloying of Mo and Y powders then consolidation by spark plasma sintering. The effects of Chromium (Cr) addition (0 wt. %, 5 wt. %, 10 wt. % and 15 wt. %, respectively) on the mechanical performance and high-temperature oxidation resistance of Mo-Y2O3 were investigated. The introduction of Cr had a significant influence on the mechanical property and oxidation resistance of the Mo-Y2O3 composite. The highest bending strength reached 932 MPa when the addition of Cr content was 5 wt. % (Mo–5Cr–1Y sample). This improvement is likely attributable to the dual mechanism of grain refinement and solid solution strengthening. Moreover, the Mo–5Cr–1Y sample showed the thinnest oxide layer thickness after high-temperature oxidation tests, and exhibited the best oxidation resistance performance compared with the other samples. First principle calculation reveals that Cr could improve the Mo–MoO3 interface bonding to prevent rapid spalling of the oxide layer. Meanwhile, Cr also facilitates the formation of the dense Cr2(MoO4)3 layer on the surface, which can inhibit further oxidation.

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