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
預(yù)回復(fù)對Al-10.78Zn-2.78Mg-2.59Cu-0.22Zr-0.047Sr鋁合金組織與性能的影響
DOI:
作者:
作者單位:

江蘇大學(xué)先進制造與現(xiàn)代裝備技術(shù)工程研究院,江蘇大學(xué)先進制造與現(xiàn)代裝備技術(shù)工程研究院

作者簡介:

通訊作者:

中圖分類號:

TG146.2

基金項目:

國家自然科學(xué)資金(51074079)；江蘇省高?？蒲谐晒a(chǎn)業(yè)化推進項目(JH10-37)；江蘇高校優(yōu)勢學(xué)科建設(shè)工程項目；江蘇省高校研究生科研創(chuàng)新計劃項目(CXLX12-0620)；


The research of the effects of prerecovery to aluminum alloy Al-10.78Zn-2.78Mg-2.59Cu-0.22Zr-0.047Sron microstructure and properties
Author:
Affiliation:

Engineering Institute of Advanced Manufacturing and Modern Equipment Technology,Jiangsu University,Engineering Institute of Advanced Manufacturing and Modern Equipment Technology,Jiangsu University

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問統(tǒng)計
    • |
  • 參考文獻
    • |
  • 相似文獻
    • |
  • 引證文獻
    • |
  • 資源附件
    • |
  • 文章評論
    摘要:

    采用電子背散射衍射分析(EBSD)、X射線衍射分析(XRD)、硬度測試、電導(dǎo)率測試、拉伸試驗、晶間腐蝕和剝落腐蝕試驗,研究了預(yù)回復(fù)處理(250℃×24h + 300℃×6h + 400℃×6h)對超高強鋁合金Al-10.78Zn-2.78Mg-2.59Cu-0.22Zr-0.047Sr組織與性能的影響。結(jié)果表明：合金固溶前的預(yù)回復(fù)處理可以細化合金晶粒,平均晶粒尺寸從7.30 μm減小到5.57 μm；經(jīng)預(yù)回復(fù)處理的合金中存在較多的低角度晶界,其比例為0.623。預(yù)回復(fù)處理對合金的硬度與電導(dǎo)率影響較小,但經(jīng)預(yù)回復(fù)處理的合金強度明顯提高。峰值時效(120℃×48h)下經(jīng)預(yù)回復(fù)處理的合金屈服強度為633.2 MPa,相對未預(yù)回復(fù)處理的合金屈服強度提高35 MPa。預(yù)回復(fù)處理對合金的抗晶間腐蝕與剝落腐蝕性能影響較大,晶間腐蝕等級從4級改善到3級；剝落腐蝕等級從EA級提升到PB級。

    Abstract:

    The effects of prerecovery ( 250℃×24h + 300℃×6h + 400℃×6h ) to aluminum alloy Al-10.78Zn-2.78Mg-2.59Cu-0.22Zr-0.047Sr on microstructure and properties was researched by analysis of EBSD、XRD and test of hardness、conductivity、tensile、intergranular corrosion、exfoliation corrosion. The results show that, prerecovery treatment can refine grain size with average size reduces from 7.30 μm to 5.57 μm and increase the proportion of low angle grain boundary from 0.588 to 0.623. The effect of prerecovery on hardness and conductivity of the alloy is small, but the strength of the alloy is obviously improved by the prerecovery. The yield strength of alloy at peak aging(120℃×48h) processed by prerecovery is 633.2 MPa. Compared with the alloy without prerecovery treatment, the yield strength increased by 35 MPa. The intergranular corrosion and exfoliation corrosion of alloy after prerecovery treatment are improved from rank 4 to rank 3 and rank EA to rank PB respectively.

    參考文獻
    相似文獻
    引證文獻
引用本文

丁清,許曉靜.預(yù)回復(fù)對Al-10.78Zn-2.78Mg-2.59Cu-0.22Zr-0.047Sr鋁合金組織與性能的影響[J].稀有金屬材料與工程,2018,47(4):1226~1231.[Ding Qing, Xu Xiaojing. The research of the effects of prerecovery to aluminum alloy Al-10.78Zn-2.78Mg-2.59Cu-0.22Zr-0.047Sron microstructure and properties[J]. Rare Metal Materials and Engineering,2018,47(4):1226~1231.]
DOI：[doi]

復(fù)制
文章指標(biāo)
  • 點擊次數(shù):
  • 下載次數(shù):
  • HTML閱讀次數(shù):
  • 引用次數(shù):
歷史
  • 收稿日期:2016-03-04
  • 最后修改日期:2016-04-25
  • 錄用日期:2016-05-19
  • 在線發(fā)布日期: 2018-05-31
  • 出版日期: