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
電磁鑄造鎂合金大規(guī)格板坯偏析與組織研究
DOI:
作者:
作者單位:

東北大學(xué),東北大學(xué),東北大學(xué),東北大學(xué),東北大學(xué),東北大學(xué)

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

TG146.2

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）遼寧省自然科學(xué)基金資助項(xiàng)目(201202072，2014028027)；遼寧省高等學(xué)校優(yōu)秀人才支持計(jì)劃資助(LJQ2012023)；中央高?；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)資金資助(N120509002)


Study on macrosegregation and Macrostructure of large scale Magnesium slab by LFEC process
Author:
Affiliation:

Northeastern University,Northeastern University,Northeastern University,Northeastern University,Northeastern University,Northeastern University

Fund Project:

  • 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:

    研究了不同鑄造速度條件下截面尺寸為300 mm?800 mm的大規(guī)格AZ31鎂合金板坯的宏觀偏析及組織。結(jié)果表明，偏析區(qū)域出現(xiàn)在距離錠坯表面20 mm ~ 30mm范圍內(nèi)，板坯心部偏析小。宏觀組織可分為表面激冷區(qū)，粗大的柱狀晶區(qū)和內(nèi)部等軸晶區(qū)。低速鑄造可減輕宏觀偏析，隨鑄造速度增加，整體晶粒尺寸先增大后減小，表面粗晶區(qū)寬度減小。高速鑄造時(shí)晶粒尺寸最小，但不均勻。合理的鑄造速度為32 mm/min。

    Abstract:

    The low frequency electromagnetic casting(LFEC) process was used in casting the large scale AZ31 magnesium slab with the cross section of 300mm×800mm, and its macrostructure and macrosegregation were investigated at different casting velocities. The result shows that the segregation was slight in the centre and become serious in region about 20mm~30mm near the slab surface, There exist three zone in AZ31 magnesium alloy slab, surface chill zone, columnar crystal zone, internal equiaxed crystal zone. With the casting velocity increasing, the size of grain increases first and then decreases, the width of columnar crystal zone decreases drastically as well as the macrosegregation. At high casting velocity, the grain size is finer, but more uneven. Thus, the appropriate casting velocity in this process is 32mm/min.

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

胡文義,樂啟熾,劉軒,張志強(qiáng),寶磊,崔建忠.電磁鑄造鎂合金大規(guī)格板坯偏析與組織研究[J].稀有金屬材料與工程,2016,45(9):2434~2438.[huwenyi, leqichi, liuxuan, zhangzhiqiang, beolei, cuijianzhong. Study on macrosegregation and Macrostructure of large scale Magnesium slab by LFEC process[J]. Rare Metal Materials and Engineering,2016,45(9):2434~2438.]
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:2014-07-19
  • 最后修改日期:2014-09-24
  • 錄用日期:2014-10-30
  • 在線發(fā)布日期: 2016-10-09
  • 出版日期: