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
Si、Cu和熱處理工藝對(duì)Al-Si合金電導(dǎo)率的影響
DOI:
作者:
作者單位:

作者簡(jiǎn)介:

通訊作者:

中圖分類號(hào):

基金項(xiàng)目:

廣州鋼鐵集團(tuán)和廣州金邦有色合金有限公司合作資助項(xiàng)目


Effect of Cu, Si and Heat Treatment on the Conductivity of Al-Si Alloys
Author:
Affiliation:

Fund Project:

  • 摘要
    • |
  • 圖/表
    • |
  • 訪問(wèn)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:

    通過(guò)電導(dǎo)率測(cè)量、金相觀察、掃描電鏡分析和X射線衍射分析，研究了Si含量、Cu含量和熱處理工藝對(duì)Al-Si系鑄造合金晶格常數(shù)和電性能的影響規(guī)律。結(jié)果表明：Si和Cu元素的添加會(huì)減小合金的電導(dǎo)率；當(dāng)Si含量超過(guò)固溶極限后，Si含量的變化對(duì)晶格畸變程度影響不大，合金的電導(dǎo)率受Si相的體積百分?jǐn)?shù)控制；而Cu在固溶極限內(nèi)時(shí)，隨其含量的增加，晶格畸變程度增大，合金的電導(dǎo)率可根據(jù)鋁基體晶格常數(shù)的偏離量來(lái)評(píng)估；經(jīng)過(guò)450 ℃，5 h+250，2 h熱處理工藝，晶格畸變程度明顯降低，合金的電導(dǎo)率有明顯提高，增幅最高可達(dá)32%。

    Abstract:

    The effects of the content of Cu and Si elements as well as heat treatment on the lattice constant and electrical properties of Al-Si alloys were investigated by Wheatstone bridge conductivity measurement, optical microscope, scanning electron microscope and X-ray diffraction analysis. The results indicate that increasing the content of Si and Cu can decrease the conductivity of Al-Si alloy. When Si content is larger than its solubility in Al, variation of Si content has less influence on the lattice constant, and the resistivity of Al-Si alloy is determined by the volume percentage of Si. When Cu content is within its solubility in Al, the increase of Cu content would increase the distortion of aluminum lattice; consequently, the influence of Cu can be estimated according to Al lattice constant deviation. After heat treatment (450 °C×5 h+250 °C×2 h), the distortion of the matrix lattice decreases significantly, and the electrical conductivity of Al-Si alloys improves obviously with the increment up to 32%.

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

李 斌,楊 昭,楊續(xù)躍,李紹康,許德英. Si、Cu和熱處理工藝對(duì)Al-Si合金電導(dǎo)率的影響[J].稀有金屬材料與工程,2015,44(11):2857~2861.[Li Bin, Yang Zhao, Yang Xuyue, Li Shaokang, Xu Deying. Effect of Cu, Si and Heat Treatment on the Conductivity of Al-Si Alloys[J]. Rare Metal Materials and Engineering,2015,44(11):2857~2861.]
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:2014-11-20
  • 最后修改日期:
  • 錄用日期:
  • 在線發(fā)布日期: 2016-07-29
  • 出版日期: