最新色国产精品精品视频,中文字幕日韩一区二区不卡,亚洲有码转帖,夜夜躁日日躁狠狠久久av,中国凸偷窥xxxx自由视频

+高級檢索
采用動態(tài)圖像分析技術對高溫合金粉末形狀定量表征
作者:
作者單位:

中國航發(fā)北京航空材料研究院 先進高溫結構材料重點實驗室，北京 100095

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家重大研發(fā)計劃,國家自然科學基金項目the National Key R&D Program of China (No. 2017YFB0305800), National Natural Science Foundation of China (No. 52071310), National Natural Science Foundation of China (No. 91860131)


Quantitative Characterization of Superalloy Powder Particle Shape Using Dynamic Image Analysis Technique
Author:
Affiliation:

Science and Technology on Advanced High Temperature Structural Materials Laboratory, AECC Beijing Institute of Aeronautical Materials, Beijing 100095, China

Fund Project:

National Key R&D Program of China (2017YFB0305800); National Natural Science Foundation of China (52071310, 91860131)

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    采用場發(fā)射掃描電子顯微鏡（FE-SEM）和動態(tài)圖像分析（DIA）技術，選用8個形狀參數對高溫合金粉末形狀進行了定性及定量表征。結果表明，Krumbein球形度（SPHT_K），長寬比（AR），緊湊度（Compct）和Krumbein圓潤度（RDNS_C）對高溫合金粉末形狀具有顯著的區(qū)分度，可以作為粉末形狀表征的關鍵參數使用。此外，發(fā)現圓度（C）、球形度（SPHT）、SPHT_K三者之間的區(qū)分度依次增加，尤其是SPHT_K的區(qū)分度最高。通過對比8個形狀表征參數的區(qū)分度差異，發(fā)現C、SPHT，凹凸度（Conv_A）和堅固性（Solid）的區(qū)分度并不顯著。最終，將SPHT_K，AR，Compct和RDNS_C 4個參數組合用于定量表征高溫合金粉末顆粒形狀變化，為霧化參數的有效調整提供粉末形狀的定量表征依據，促進增材制造和先進粉末冶金技術的研發(fā)。

    Abstract:

    Eight shape parameters were selected to qualitatively and quantitatively characterize the particle shape of superalloy powders using field emission scanning electron microscopy (FE-SEM) and dynamic image analysis (DIA) technique. The results show that Krumbein sphericity (SPHT_K), aspect ratio (AR), compactness (Compct) and Krumbein roundness (RDNS_C) demonstrate a significant distinction degree of superalloy powder particle shape, and can be used as critical parameters for the characterization of particle shape.In addition, the distinction degree of circularity (C), sphericity (SPHT) and SPHT_K increases gradually. In particular, the SPHT_K has the highest distinction degree among the three shape parameters. By comparing the difference in distinction degree among eight shape parameters, it is found that the distinction degree of circularity (C), sphericity (SPHT), convexity (Conv_A) and solidity (Solid) is not significant.Therefore, the SPHT_K, AR, Compct and RDNS_C are selected as the shape parameter combination to quantitatively characterize the particle shape. The combination of these four shape parameters can be used to quantitatively characterize the change of superalloy powder particle shape. Meanwhile, it provides a data basis to effectively optimize the atomization processing parameters. The promotion of the development of additive manufacturing and advanced powder metallurgy technology in future was discussed in the end.

    參考文獻
    相似文獻
    引證文獻
引用本文

張利沖,許文勇,李周,鄭亮,張強,張國慶.采用動態(tài)圖像分析技術對高溫合金粉末形狀定量表征[J].稀有金屬材料與工程,2021,50(12):4193~4200.[Zhang Lichong, Xu Wenyong, Li Zhou, Zheng Liang, Zhang Qiang, Zhang Guoqing. Quantitative Characterization of Superalloy Powder Particle Shape Using Dynamic Image Analysis Technique[J]. Rare Metal Materials and Engineering,2021,50(12):4193~4200.]
DOI：10.12442/j. issn.1002-185X.20200742

復制
文章指標
  • 點擊次數:
  • 下載次數:
  • HTML閱讀次數:
  • 引用次數:
歷史
  • 收稿日期:2020-09-23
  • 最后修改日期:2021-01-09
  • 錄用日期:2021-01-18
  • 在線發(fā)布日期: 2021-12-30
  • 出版日期: 2021-12-24