a與疲勞斷裂循環(huán)周次Nf之間的關(guān)系曲線,并對疲勞斷口形貌進行觀察分析。結(jié)果表明：200 ℃退火60 min超細晶工業(yè)純鈦的疲勞極限值σ-1為376.5 MP,比未退火超細晶工業(yè)純鈦的疲勞極限值提高56.5 MPa。疲勞裂紋源萌生于超細晶工業(yè)純鈦的表面, 200 ℃退火60 min超細晶工業(yè)純鈦的疲勞輝紋間距較小,疲勞裂紋不易擴展,室溫疲勞性能優(yōu)良。"/>

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
復(fù)合細化超細晶工業(yè)純鈦高周疲勞性能研究
DOI:
作者:
作者單位:

西安建筑科技大學冶金工程學院,西安建筑科技大學冶金工程學院,西安建筑科技大學冶金工程學院,西安建筑科技大學冶金工程學院

作者簡介:

通訊作者:

中圖分類號:

基金項目:

國家自然科學基金資助 (項目號51474170),陜西省教育廳專項項目(項目號15JK1409)


High-Cycle Fatigue of Ultra-fine Grained Commercial Purity Titanium by Combined refining process
Author:
Affiliation:

College of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an,College of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an,College of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an,College of Metallurgical Engineering,Xi’an University of Architecture and Technology,Xi’an

Fund Project:

  • 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:

    室溫下,超細晶工業(yè)純鈦光滑試樣在加載頻率f=25 Hz、應(yīng)力比R=-1的條件下進行高周應(yīng)力疲勞測試,擬合超細晶工業(yè)純鈦應(yīng)力幅σa與疲勞斷裂循環(huán)周次Nf之間的關(guān)系曲線,并對疲勞斷口形貌進行觀察分析。結(jié)果表明：200 ℃退火60 min超細晶工業(yè)純鈦的疲勞極限值σ-1為376.5 MP,比未退火超細晶工業(yè)純鈦的疲勞極限值提高56.5 MPa。疲勞裂紋源萌生于超細晶工業(yè)純鈦的表面, 200 ℃退火60 min超細晶工業(yè)純鈦的疲勞輝紋間距較小,疲勞裂紋不易擴展,室溫疲勞性能優(yōu)良。

    Abstract:

    Stress-controlled high-cycle fatigue performance of ultra-fine grained commercial purity titanium (UFG CP Ti) was conducted with a loading frequency of 25 Hz and a stress ratio R=-1 at room temperature. The relation between stress amplitude and cycle numbers to failure was fitted, and the fatigue fracture surface of UFG CP Ti specimen was also investigated. The results showed that the fatigue limit of annealed UFG CP Ti specimen at 200℃ for 60 min was 376.5 MPa, which increased 56.5 MPa compared with the unannealed one. Moreover, the fatigue cracks mainly initiated from the surface of fatigue specimen. The annealed UFG CP Ti specimen exhibited the smaller fatigue striation spacing and lower crack propagation rate than the unannealed one, indicating a higher room temperature fatigue performance.

    參考文獻
    相似文獻
    引證文獻
引用本文

羅雷,趙西成,楊西榮,劉曉燕.復(fù)合細化超細晶工業(yè)純鈦高周疲勞性能研究[J].稀有金屬材料與工程,2017,46(7):1929~1934.[Luo Lei, Zhao Xicheng, Yang Xirong, Liu Xiaoyan. High-Cycle Fatigue of Ultra-fine Grained Commercial Purity Titanium by Combined refining process[J]. Rare Metal Materials and Engineering,2017,46(7):1929~1934.]
DOI：[doi]

復(fù)制
文章指標
  • 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:2016-05-03
  • 最后修改日期:2016-07-25
  • 錄用日期:2016-08-18
  • 在線發(fā)布日期: 2017-11-14
  • 出版日期: