3Ti析出相的非均相形核，晶粒尺寸范圍減小到2.5 μm以內(nèi)。隨著小角度晶界的增大，晶格畸變能增大，平均納米硬度和楊氏模量分別提高到2.36 和92.72 GPa。添加3% Ti后，LPBF處理的Al基合金<100>織構(gòu)略有增強(qiáng)，但仍有一個(gè)隨機(jī)的晶體取向。獲得了α-Al向Al3Ti的相變。"/>

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(jí)檢索
LPBF成型加Ti鋁基合金的組織特性及其對(duì)納米硬度的影響
作者:
作者單位:

江蘇科技大學(xué) 海洋裝備研究院，江蘇 鎮(zhèn)江 212003

作者簡介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

The Natural Science Foundation for Colleges and Universities of Jiangsu Province (Grants No. 22KJB430023). the Youth Science and Technology Innovation Project of Jiangsu University of Science and Technology (1172922101) ，the Initial Funding of the Research from Jiangsu University of Science and Technology.


Microstructure Characteristic and Its Impact on Nano-hardness of LPBF-Processed Al-based Alloy with Ti Addition
Author:
Affiliation:

Marine Equipment and Technology Institute, Jiangsu University of Science and Technology, Zhenjiang 212003, China

Fund Project:

Natural Science Foundation for Colleges and Universities of Jiangsu Province (22KJB430023); Youth Science and Technology Innovation Project of Jiangsu University of Science and Technology (1172922101)

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計(jì)
    • |
  • 參考文獻(xiàn)
    • |
  • 相似文獻(xiàn)
    • |
  • 引證文獻(xiàn)
    • |
  • 資源附件
    • |
  • 文章評(píng)論
    摘要:

    論述了在激光粉末床熔融（LPBF）成型Al基合金中添加Ti的影響。采用掃描電鏡、電子背散射衍射、X射線衍射、透射電鏡和納米壓痕測試等方法，研究了Ti含量為3%（質(zhì)量分?jǐn)?shù)，下同）和不含Ti的LPBF制備樣品的顯微組織特征、相分布和納米硬度。結(jié)果表明，該方法可獲得較細(xì)的晶粒組織和較小的平均晶粒尺寸。由于Al3Ti析出相的非均相形核，晶粒尺寸范圍減小到2.5 μm以內(nèi)。隨著小角度晶界的增大，晶格畸變能增大，平均納米硬度和楊氏模量分別提高到2.36 和92.72 GPa。添加3% Ti后，LPBF處理的Al基合金<100>織構(gòu)略有增強(qiáng)，但仍有一個(gè)隨機(jī)的晶體取向。獲得了α-Al向Al3Ti的相變。

    Abstract:

    The influence of Ti addition into Al-based alloy fabricated by laser powder bed fusion (LPBF) technique was demonstrated. The microstructure characteristics, phase identification and nano-hardness of the LPBF-processed samples without or with 3wt% Ti addition were investigated by scanning electron microscope, electron backscatter diffraction, X-ray diffraction, transmission electron microscope and nano-indentation tests. The results reveal that a refined grain microstructure and lower average grain sizes can be obtained. Due to the heterogeneous nucleation provided by Al3Ti precipitated phases, the ranges of grain sizes are reduced within 2.5 μm. As the low angle grain boundary increases, higher crystal lattice distortion energy contributes to the increase in average nano-hardness (to 2.36 GPa) and Young's modulus (to 92.72 GPa) values. The <100> texture of LPBF-processed Al-based alloy with 3wt% Ti addition is slightly enhanced, while there is still a random crystal orientation. The phase transformation from α-Al to Al3Ti can be obtained.

    參考文獻(xiàn)
    相似文獻(xiàn)
    引證文獻(xiàn)
引用本文

王秋平,關(guān)杰仁.LPBF成型加Ti鋁基合金的組織特性及其對(duì)納米硬度的影響[J].稀有金屬材料與工程,2024,53(3):676~684.[Wang Qiuping, Guan Jieren. Microstructure Characteristic and Its Impact on Nano-hardness of LPBF-Processed Al-based Alloy with Ti Addition[J]. Rare Metal Materials and Engineering,2024,53(3):676~684.]
DOI：10.12442/j. issn.1002-185X.20230371

復(fù)制
文章指標(biāo)
  • 點(diǎn)擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2023-06-12
  • 最后修改日期:2024-02-19
  • 錄用日期:2023-10-07
  • 在線發(fā)布日期: 2024-03-22
  • 出版日期: 2024-03-20