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
W、B、Y微合金化高鈮TiAl基合金高溫抗氧化性研究
DOI:
作者:
作者單位:

作者簡介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

國家自然科學(xué)基金（50801047）


High-Temperature Oxidation Resistance of W, B, Y Microalloyed TiAl Based Alloys with High Nb Content
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(píng)論
    摘要:

    使用元素W、B、Y對(duì)Ti-45Al-8Nb合金進(jìn)行了微合金化，研究了微合金化后高鈮TiAl基合金在900 ℃靜止空氣中的斷續(xù)氧化行為。結(jié)果表明，與Ti-45Al-8Nb合金相比，經(jīng)過0.2B與0.1Y聯(lián)合微合金化后合金的氧化增重小，氧化膜與基體的粘附性強(qiáng)，抗氧化性明顯改善；經(jīng)過0.2W與0.1Y微合金化后合金氧化增重明顯，氧化膜容易脫落，合金抗氧化性下降；經(jīng)過0.2B、0.2W、0.1Y聯(lián)合微合金化后合金抗氧化性沒有明顯變化。對(duì)氧化膜進(jìn)行的掃描電鏡(SEM)、能譜分析(EDS)及X射線衍射（XRD）分析表明，聯(lián)合添加B、Y促進(jìn)了合金中的連續(xù)致密的Al2O3條帶的形成，W、Y聯(lián)合微合金化的合金中靠近基體處未形成連續(xù)的Al2O3條帶，并且混合層中形成了較厚的低鈮含量的TiO2層。W、B、Y聯(lián)合微合金促進(jìn)了混合層中富Al2O3層的形成。

    Abstract:

    The interrupted oxidation behavior of B, W and Y micro-alloyed TiAl-based alloys with high Nb content at 900 oC in static air was investigated. The results show that the combined addition of 0.2wt%B and 0.1wt%Y improves the oxidation resistance obviously with less oxidation weighting and enhanced adherence of the oxide scale, while the combined addition of 0.2wt%W and 0.1wt%Y leads to poor oxidation resistance with higher oxidation weighting and impairing adherence of the oxide scale. Besides, the oxidation resistance of the alloy with combined addition of 0.2wt%B, 0.2wt%W and 0.1wt%Y does not change significantly. Oxidized samples were examined by scanning electron microscopy (SEM), energy dispersive X-ray analysis (EDX) and X-ray diffraction analysis (XRD). It is found that the combined addition B and Y can promote the formation of continuous and compact Al2O3 oxide scale. The combined addition W and Y produces continuous Al2O3 layer near to the matrix and thick TiO2 layer with low Nb content in the mixed layer. Combined addition W, B and Y promotes the formation of Al2O3 oxide scale in the mixed layer.

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

王艷晶,柳 樂,宋玫錦,王繼杰,杜興蒿. W、B、Y微合金化高鈮TiAl基合金高溫抗氧化性研究[J].稀有金屬材料與工程,2014,43(8):1871~1875.[Wang Yanjing, Liu Le, Song Meijin, Wang Jijie, Du Xinghao. High-Temperature Oxidation Resistance of W, B, Y Microalloyed TiAl Based Alloys with High Nb Content[J]. Rare Metal Materials and Engineering,2014,43(8):1871~1875.]
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:2013-09-17
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2015-01-04
  • 出版日期: