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
Al、Ti含量對(duì)鍛態(tài)Incoloy825合金組織和耐腐蝕性能的影響
DOI:
作者:
作者單位:

南京航空航天大學(xué) 材料科學(xué)與技術(shù)學(xué)院,南京航空航天大學(xué) 材料科學(xué)與技術(shù)學(xué)院,南京航空航天大學(xué) 材料科學(xué)與技術(shù)學(xué)院,南京航空航天大學(xué) 材料科學(xué)與技術(shù)學(xué)院

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

TG146.1+5

基金項(xiàng)目:

江蘇省六大高峰人才項(xiàng)目(2014-XCL-005), 江蘇高校優(yōu)勢(shì)學(xué)科建設(shè)工程資助項(xiàng)目


The effect of varying Al, Ti contents on the microstructure and corrosion resistance property of as-forged Incoloy825 alloy
Author:
Affiliation:

Institute of materials science and technology,Nanjing university of aeronautics and astronautics,Institute of materials science and technology,Nanjing university of aeronautics and astronautics,Institute of materials science and technology,Nanjing university of aeronautics and astronautics,Institute of materials science and technology,Nanjing university of aeronautics and astronautics

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:

    在熱力學(xué)模擬Incoloy825合金成分范圍內(nèi)不同Al、Ti含量對(duì)合金析出相析出規(guī)律的基礎(chǔ)上，采用光學(xué)顯微鏡(OM)、掃描電鏡(SEM)觀察了合金顯微組織和腐蝕試樣的表面形貌，采用電化學(xué)工作站和靜態(tài)失重法測(cè)試了合金在1mol/L、3mol/L HCl溶液中的動(dòng)電位極化曲線、電化學(xué)阻抗譜和腐蝕速率。結(jié)果表明，終鍛溫度下Incoloy825合金由基體γ相和少量Ti(C,N)析出相組成。隨著Al、Ti含量提高，塊狀Ti(C,N)析出量增加，組織細(xì)化；鍛態(tài)Incoloy825合金的腐蝕電流密度增大，耐蝕性下降，發(fā)生點(diǎn)蝕的傾向增大。合金的腐蝕優(yōu)先從組織中塊狀Ti(C,N)部位出現(xiàn)點(diǎn)蝕。隨著Al、Ti含量提高，合金表面的腐蝕產(chǎn)物逐漸由致密變得疏松多孔，對(duì)基體的保護(hù)作用下降。

    Abstract:

    In this work, the effect of varying Al and Ti contents of Incoloy825 alloy on the phase transformations that might occur in the material was simulated using a thermodynamic modelling tool. Employ optical microscope (OM), scanning electron microscope (SEM) to observe the microstructure as well as the corrosion morphology of the tested alloy. Potentiodynamic polarization curves, electrochemical impedance spectroscopy and corrosion rate of the tested alloy were investigated by electrochemical workstation and static weight-loss method in 1mol/L, 3mol/L HCl solutions. The results indicate that the microstructure of as-forged Incoloy825 is composed of γ substrate and a small quantity of Ti(C,N) at final forging temperature. With the improvement of Al, Ti contents, precipitation volume of blocky Ti(C,N) increased gradually, grain is refined; corrosion current density increased gradually, corrosion resistance decreased significantly, tendency to pitting of the tested alloy is increased. Large, faceted Ti(C,N) particles in Incoloy825 alloy provide preferred sites for pit initiation in the chloride environments. With the improvement of Al, Ti contents, corrosion products on the tested alloy surface became more porous, the protection to matrix is decreased.

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

孫楠,溫宸,劉子利,劉希琴. Al、Ti含量對(duì)鍛態(tài)Incoloy825合金組織和耐腐蝕性能的影響[J].稀有金屬材料與工程,2018,47(3):860~866.[Sun Nan, Wen Chen, Liu Zili, Liu Xiqin. The effect of varying Al, Ti contents on the microstructure and corrosion resistance property of as-forged Incoloy825 alloy[J]. Rare Metal Materials and Engineering,2018,47(3):860~866.]
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:2016-01-22
  • 最后修改日期:2016-08-05
  • 錄用日期:2016-08-17
  • 在線發(fā)布日期: 2018-04-11
  • 出版日期: