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
Ti-6.5Al-3.5Mo-1.5Zr-0.3Si合金β加工動態(tài)再結(jié)晶行為研究
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項目:

江西省自然科學(xué)基金資助（2007GQC1575）；江西省材料科學(xué)與工程中心基金資助（ZX200601002）


Dynamic Recrystallization of β Phase of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si Alloy
Author:
Affiliation:

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:

    利用Thermecmastor-Z熱模擬試驗機，在變形溫度1020~1080 ℃和應(yīng)變速率0.001~70 s-1范圍內(nèi)對原始等軸組織的Ti-6.5Al-3.5Mo-1.5Zr-0.3Si合金進行等溫恒應(yīng)變速率壓縮實驗，分析高溫流動行為，構(gòu)建基于動態(tài)材料模型的功率耗散圖，并結(jié)合微觀組織觀察對其β加工的動態(tài)再結(jié)晶行為進行研究。結(jié)果表明，Ti-6.5Al-3.5Mo-1.5Zr-0.3Si合金在β單相區(qū)變形時，不同溫度和應(yīng)變速率下的流動應(yīng)力曲線均呈穩(wěn)態(tài)流動特征，但僅根據(jù)流動應(yīng)力曲線并不能確定是否發(fā)生動態(tài)再結(jié)晶。根據(jù)功率耗散圖分析和微觀組織觀察可知，Ti-6.5Al-3.5Mo-1.5Zr-0.3Si合金β加工易發(fā)生動態(tài)再結(jié)晶的熱力參數(shù)范圍為：變形溫度1020～1080 ℃，應(yīng)變速率0.01～0.1 s-1，此區(qū)域功率耗散功率η值都大于0.4，為實際β加工時優(yōu)化的熱力參數(shù)范圍；應(yīng)變速率過高或過低，均不易發(fā)生動態(tài)再結(jié)晶

    Abstract:

    An isothermal and constant strain rate compression test is carried out for the Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy with an equiaxed α+β microstructure in the temperature range of 1020~1080 ℃ and the strain rate range of 0.001~70 s-1. A power dissipation map is developed on the basis of flow stress data and by using the principles of dynamic material model. The results show that the steady state flow characteristics exist during hot compression deformation for the Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy in the temperature range 1020~1080 ℃. The dynamic recrystallization regime was identified in the power dissipation map and the microstructure examination was performed for validation. In the β phase field, the dynamic recrystallization occured in the temperature range of 1020~1080 ℃ and the strain rate range of 0.01~0.1 s-1 with the efficiency of power dissipation η mostly larger than 0.4, which is the optimum β forging processing parameters. It is proved that the power dissipation map based on dynamic material model is an effective method for successful β-forging and microstructure control

    參考文獻
    相似文獻
    引證文獻
引用本文

王克魯,魯世強,李 鑫,楊化娟,董顯娟. Ti-6.5Al-3.5Mo-1.5Zr-0.3Si合金β加工動態(tài)再結(jié)晶行為研究[J].稀有金屬材料與工程,2009,38(2):219~223.[Wang Kelu, Lu Shiqiang, Li Xin, Yang Huajuan, Dong Xianjuan. Dynamic Recrystallization of β Phase of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si Alloy[J]. Rare Metal Materials and Engineering,2009,38(2):219~223.]
DOI：[doi]

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:2008-01-26
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: