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
鑄態(tài)AZ31B鎂合金中厚板熱軋制溫度場數(shù)學(xué)模型
DOI:
作者:
作者單位:

太原科技大學(xué)山西省冶金設(shè)備設(shè)計(jì)理論與技術(shù)重點(diǎn)實(shí)驗(yàn)室,太原科技大學(xué)山西省冶金設(shè)備設(shè)計(jì)理論與技術(shù)重點(diǎn)實(shí)驗(yàn)室

作者簡介:

通訊作者:

中圖分類號(hào):

TG146.22

基金項(xiàng)目:

國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃（973計(jì)劃）;中國博士后科學(xué)基金;國家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）；山西省高校青年學(xué)術(shù)帶頭人計(jì)劃（TYAL）、山西省科技攻關(guān)（20130321010-03）


Mathematical Temperature Field Model about Cast AZ31B Magnesium Alloy during Hot Rolling of Plate
Author:
Affiliation:

Taiyuan University of Science and Technology, Heavy machinery engineering research center of the ministry education,Taiyuan University of Science and Technology, Heavy machinery engineering research center of the ministry education

Fund Project:

Fundamental Research Funds for the Central Universities (12MS11); Program for New Century Excellent Talents in University (NCET-12-0849); National Basic Research Program of China (2011CB710706); the Open Fund of Key Laboratory of Low-grade Energy Utilization Technologies and Systems of Ministry of Education (KH3381)

  • 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:

    采用Gleeble1500D熱/力模擬試驗(yàn)機(jī)對(duì)鑄態(tài)AZ31B鎂合金圓柱試樣在變形溫度250-450℃、應(yīng)變速率0.005-5s下進(jìn)行高溫壓縮試驗(yàn)，基于高精度流變應(yīng)力模型，依托于剛塑性有限元分析軟件針對(duì)鎂板不同初軋溫度、不同道次壓下率以及不同軋制速度條件下的中厚板熱軋制過程進(jìn)行了熱力耦合數(shù)值分析，利用數(shù)學(xué)解析的方法建立了不同工藝條件下鎂板變形區(qū)域的溫度場數(shù)學(xué)模型。研究結(jié)果表明，不同熱軋工藝條件下軋制變形區(qū)域溫度的分布有很大區(qū)別，溫度場數(shù)學(xué)模型需要?jiǎng)澐植煌に嚄l件針對(duì)軋制后滑區(qū)和前滑區(qū)來分別建立；用簡單數(shù)學(xué)方程來表征鎂合金的傳熱過程，使得溫度在線控制機(jī)理模型形式上更為簡單，并且能夠精確表征中厚規(guī)格鎂板寬范圍軋制條件下的傳熱機(jī)制。

    Abstract:

    The cast magnesium alloy AZ31B cylindrical samples of high temperature compression tests were taken under the deformation temperature 250-450℃and strain rate 0.005-5 using Gleeble-1500D thermal/mechanical simulation testing machine. Based on the high precision flow stress models and the rigid-plastic finite element analysis software, numerical analysis of coupled thermal-stress of hot rolling process under different initial rolling temperatures, different rolling reductions and different rolling speeds was carried on. Under different conditions, models of temperature field of magnesium plate deformation region were established by using mathematical analysis methods. The results showed that, under different conditions of hot rolling processes and rolling zone, regional distribution of rolling deformation temperature was so different that mathematical models of temperature field should be divided into different process conditions to establish. The mechanism of temperature controlled online was more simple by using mathematical equations to characterize the magnesium alloy heat transfer process ,and heat transfer mechanism of magnesium plate rolling in wide ranges was accurately characterized.

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

賈偉濤,馬立峰.鑄態(tài)AZ31B鎂合金中厚板熱軋制溫度場數(shù)學(xué)模型[J].稀有金屬材料與工程,2016,45(3):702~708.[Jia Wei-tao, Ma Li-feng. Mathematical Temperature Field Model about Cast AZ31B Magnesium Alloy during Hot Rolling of Plate[J]. Rare Metal Materials and Engineering,2016,45(3):702~708.]
DOI：[doi]

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:2014-09-11
  • 最后修改日期:2014-10-25
  • 錄用日期:2014-11-21
  • 在線發(fā)布日期: 2016-07-07
  • 出版日期: