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
Modeling for Predicting Flow Stress of Al-14Cu-7Ce Alloy at Elevated Temperature
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:


Modeling for Predicting Flow Stress of Al-14Cu-7Ce Alloy at Elevated Temperature
Author:
Affiliation:

Fund Project:

National Basic Research Program of China (2005CB623705)

  • 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:

    在應變速率0.001~1 s-1、溫度573~823 K的條件下，采用Gleeble 3500熱模擬試驗機對Al-14Cu-7Ce合金進行等溫熱壓縮實驗，并根據真應力-真應變的計算數值，建立了Al-14Cu-7Ce合金高溫流變應力本構方程。結果表明，流變應力符合速率方程；其中，應變的影響通過多項式擬合方式耦合進入材料常數A，αL和n。所建立的本構方程能夠準確預測Al-14Cu-7Ce合金高溫流變應力，實驗條件下控制合金熱變形的主要機制是位錯攀移。

    Abstract:

    Isothermal hot compression tests of annealed Al-14Cu-7Ce alloy were carried out on Gleeble-3500 system in the temperature range from 573 K to 823 K and the stain rate range from 0.001 s-1 to 1 s-1. The resulted true stress-true strain data were employed to establish a constitutive equation for predicting high temperature flow stress. The results show that the flow stress follow well the rate equation . The effect of strain was taken into account by fitting of polynomials into the material parameters A, αL and n. The proposed constitutive equation can predict precisely high temperature flow stress of Al-14Cu-7Ce alloy. The control mechanism of hot deformation is dislocation climb.

    參考文獻
    相似文獻
    引證文獻
引用本文

王芝秀,李 海,孫王杰,苗芬芬,宋仁國,鄭子樵. Modeling for Predicting Flow Stress of Al-14Cu-7Ce Alloy at Elevated Temperature[J].稀有金屬材料與工程,2014,43(6):1300~1303.[Wang Zhixiu, Li Hai, Sun Wangjie, Miao Fenfen, Song Renguo, Zheng Ziqiao. Modeling for Predicting Flow Stress of Al-14Cu-7Ce Alloy at Elevated Temperature[J]. Rare Metal Materials and Engineering,2014,43(6):1300~1303.]
DOI：[doi]

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:2013-06-25
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2014-11-13
  • 出版日期: