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
硼含量及冷卻速度對TiAl合金十字形鑄件組織的影響
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:


Influences of Boron Concentration and Cooling Rate on Structure of TiAl Alloy Crisscross Casting
Author:
Affiliation:

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
    • |
  • 文章評論
    摘要:

    采用真空感應(yīng)磁懸浮熔煉法制備Ti-47Al-2Cr-2Nb-xB (x=0,0.15,0.8,1.5) (at%)十字形不同壁厚(2、5、10、20 mm)的鑄件。借助體視顯微鏡、掃描電子顯微鏡(SEM)對鑄件的組織進(jìn)行分析，研究硼含量和冷卻速度對鑄件硼化物形態(tài)、晶粒細(xì)化效果的影響。結(jié)果表明：硼含量越高，冷卻速度越快，細(xì)化效果越好。隨著硼含量的增加，硼化物的形態(tài)從彎曲條帶狀逐漸轉(zhuǎn)變?yōu)槎贪魻罨蚱瑺睢i-47Al-2Cr-2Nb-0.8B鑄件硼化物尺寸隨冷卻速度的降低而減小，Ti-47Al-2Cr-2Nb-0.15B和Ti-47Al-2Cr-2Nb-1.5B鑄件硼化物隨冷卻速度的變化規(guī)律不明顯

    Abstract:

    Ti-47Al-2Cr-2Nb-xB (x=0, 0.15, 0.8, 1.5) (at%) crisscross casting with different thickness (2, 5, 10 and 20 mm) were prepared by a vacuum induction skull furnace. Influences of the cooling rate and the boron concentration on the boride shape and the grain size of the casting were studied by means of stereo microscope and scanning electron microscopy (SEM). The results show that the higher boron concentration and the faster cooling rate lead to smaller grain size. Waved-flake borides change into stick- or plate-like ones when the boron concentration increases. Boride size of Ti-47Al-2Cr-2Nb-0.8B casting is reduced with the cooling rate decreasing, but the change of boride size of Ti-47Al-2Cr-2Nb-0.15B and Ti-47Al-2Cr-2Nb-1.5B casting is unobvious

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

楊莉莉,鄭立靜,張 虎.硼含量及冷卻速度對TiAl合金十字形鑄件組織的影響[J].稀有金屬材料與工程,2011,40(9):1565~1567.[Yang Lili, Zheng Lijing, Zhang Hu. Influences of Boron Concentration and Cooling Rate on Structure of TiAl Alloy Crisscross Casting[J]. Rare Metal Materials and Engineering,2011,40(9):1565~1567.]
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:2010-09-20
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期:
  • 出版日期: