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
基于納米動力學(xué)分析的鈦薄膜力學(xué)行為和疲勞性能研究
作者:
作者單位:

1.哈爾濱工程大學(xué);2.陸軍裝甲兵學(xué)院

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學(xué)基金(51535011, 51705095, 51775554), 國家基礎(chǔ)研究計劃 (973 項目) (No. 61328303), 黑龍江省博士后科研發(fā)展基金 (LBH-Q18036), 黑龍江省自然科學(xué)基金聯(lián)合引導(dǎo)項目(LH2019E031), 中央高校基礎(chǔ)研究基金 (HEUCF 3072019CF1010).


Nanoscale Dynamic-Mechanical-Analysis Characterization of the Mechanical Behavior and Fatigue Property for Ti Films
Author:
Affiliation:

1.Institute of Surface/Interface Science and Technology,School of Materials Science and Chemical Engineering,Harbin Engineering University,Harbin Heilongjiang;2.National Key Laboratory for Remanufacturing,Academy of Armored Forces Engineering

Fund Project:

National Natural Science Foundation of China (51535011, 51705095, 51775554), National Basic Research Program of China (973 Program) (No. 61328303), Postdoctoral Scientific Research Developmental Fund of Heilongjiang Province (LBH-Q18036), Natural Science Foundation of Heilongjiang Province (LH2019E031), Fundamental Research Funds for the Central Universities (HEUCF 3072019CF1010).

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

    利用納米壓痕試驗研究了不同厚度鈦薄膜的力學(xué)行為和疲勞性能。在納米級動態(tài)力學(xué)分析的基礎(chǔ)上，根據(jù)儲存剛度的變化定量計算了薄膜的疲勞壽命。結(jié)果表明，薄膜的疲勞壽命與殘余應(yīng)力有顯著的關(guān)系。壓痕原位掃描圖像顯示，薄膜出現(xiàn)明顯堆積分層，長裂紋從壓頭中心向壓頭邊緣垂直延伸。而且，壓痕周圍積累了大量的應(yīng)力，納米級動態(tài)加載過程產(chǎn)生了高度局域化的塑性變形和應(yīng)力釋放。薄膜內(nèi)部的殘余壓應(yīng)力將抵消部分載荷應(yīng)力，提高薄膜的疲勞壽命。

    Abstract:

    The mechanical behavior and the fatigue property of Ti films with different thickness were investigated by nanoindentation test. The fatigue property of the films was quantitatively calculated according to the changes of storage stiffness under the nanoscale dynamic mechanical analysis. The results showed that the fatigue life of the films depends on the residual stress remarkably. In situ scanning images showed the thin film was significantly stacked and layered, and long cracks radiated from the center of the indenter perpendicular to the indenter edge. Additionally, there was a sizable pile up around the indentions which demonstrated that a highly localized plastic deformation and stress release occurred in the process of the nanoscale dynamic loading process. The existence of the internal compressive residual stress will offset part of the load stress to improve the fatigue life of films.

    參考文獻
    相似文獻
    引證文獻
引用本文

劉金娜,王海斗,邢志國,徐濱士,崔秀芳,金國.基于納米動力學(xué)分析的鈦薄膜力學(xué)行為和疲勞性能研究[J].稀有金屬材料與工程,2020,49(6):1938~1945.[Jin-na Liu, Hai-dou Wang, Zhi-guo Xing, Bin-shi Xu, Xiu-fang Cui, Guo Jin. Nanoscale Dynamic-Mechanical-Analysis Characterization of the Mechanical Behavior and Fatigue Property for Ti Films[J]. Rare Metal Materials and Engineering,2020,49(6):1938~1945.]
DOI：10.12442/j. issn.1002-185X.20190203

復(fù)制
文章指標(biāo)
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2019-03-13
  • 最后修改日期:2019-06-24
  • 錄用日期:2019-06-24
  • 在線發(fā)布日期: 2020-07-09
  • 出版日期: