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噴丸對鎢面對等離子體材料表面強(qiáng)化研究
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1.徐州工程學(xué)院;2.中南林業(yè)科技大學(xué)

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基金項(xiàng)目:

國家自然科學(xué)基金資助(項(xiàng)目號11875230)


Study on Surface Strengthening of Tungsten Plasma Facing Material by Shot Peening
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Xuzhou University of Technology

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    摘要:

    利用機(jī)械噴丸技術(shù)對鎢核聚變面對等離子體材料進(jìn)行表面強(qiáng)化研究，結(jié)合噴丸前后鎢性能改善進(jìn)行強(qiáng)化效果分析及噴丸參數(shù)的優(yōu)化。主要包括微觀形貌、晶粒細(xì)化、表面粗糙度、表面硬化和表面殘余壓應(yīng)力等表征參數(shù)。其結(jié)果顯示，對鎢脆而硬的材料而言，在100%覆蓋率情況下，0.3MPa噴丸壓力、0.4mm陶瓷丸、100mm垂直噴丸距離是比較合適的噴丸參數(shù)，其材料表面性能提高顯著。表面硬度提高高達(dá)53.3%，殘余壓應(yīng)力提高8.3倍，表面細(xì)化晶?，F(xiàn)象明顯，而且對表面粗糙度影響不大，最高1.5μm左右。

    Abstract:

    The mechanical shot peening technology is applied to study the surface strengthening of tungsten plasma facing materials for fusion device. The strengthening effect of tungsten after shot peening was discussed in detail, which included micro morphology, grain refinement, surface roughness, surface hardness and surface residual compressive stress. And the shot peening process parameters were also optimized. The results indicate that it is the optimum shot peening parameters for the brittle and hard tungsten that air pressure of 0.3 MPa, ceramic pellet with the diameter of 0.4 mm and 100 mm pellet distance, which induces the performance enhancement of tungsten plasma facing material. The surface grain refinement phenomenon is obvious. The surface hardness increasement of about 53.5% is obtained, and the residual compressive stress is increased by 8.3 times. And the influence of shot peening technology on surface roughness is not obvious. The maximum roughness is about 1.5μm.

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紀(jì)素艷,種法力,廖凱,陳家偉.噴丸對鎢面對等離子體材料表面強(qiáng)化研究[J].稀有金屬材料與工程,2021,50(10):3714~3719.[Ji Suyan, Chong Fali, Liao Kai, Chen Jiawei. Study on Surface Strengthening of Tungsten Plasma Facing Material by Shot Peening[J]. Rare Metal Materials and Engineering,2021,50(10):3714~3719.]
DOI：10.12442/j. issn.1002-185X.20200819

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歷史
  • 收稿日期:2020-10-23
  • 最后修改日期:2020-11-26
  • 錄用日期:2020-12-23
  • 在線發(fā)布日期: 2021-10-28
  • 出版日期: 2021-10-25