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
擠壓鑄造準(zhǔn)晶增強(qiáng)AZ91D鎂基復(fù)合材料組織與性能
DOI:
作者:
作者單位:

中北大學(xué)材料科學(xué)與工程學(xué)院,材料科學(xué)與工程學(xué)院,材料科學(xué)與工程學(xué)院,材料科學(xué)與工程學(xué)院

作者簡介:

通訊作者:

中圖分類號:

TG146.2

基金項(xiàng)目:

國家自然科學(xué)基金項(xiàng)目（面上項(xiàng)目，重點(diǎn)項(xiàng)目，重大項(xiàng)目）


Microstructure and mechanical properties of squeeze casting quasicrystal reinforced AZ91D magnesium matrix composites
Author:
Affiliation:

College of Materials Science and Engineering,North University of China,College of Materials Science and Engineering,North University of China,College of Materials Science and Engineering,North University of China,College of Materials Science and Engineering,North University of China

Fund Project:

the Pre-Research Project of National Key Basic Research Program (2012CBT22702); the New Century Excellent Talents Program of Ministry of Education (NCET-10-0137)

  • 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:

    為了改善AZ91D鎂合金的性能,采用擠壓鑄造法制備了Mg-Zn-Y準(zhǔn)晶中間合金增強(qiáng)AZ91D鎂基復(fù)合材料,研究了準(zhǔn)晶中間合金含量對復(fù)合材料組織和性能的影響。結(jié)果表明擠壓鑄造工藝可以有效細(xì)化晶粒,復(fù)合材料的顯微組織主要由α-Mg基體、晶界上分布的β-Mg17Al12相以及Mg3Zn6Y準(zhǔn)晶顆粒組成,準(zhǔn)晶顆粒和α-Mg基體之間形成穩(wěn)定結(jié)合。當(dāng)準(zhǔn)晶中間合金含量為5%時(shí),抗拉強(qiáng)度和斷后伸長率達(dá)到最大值,分別為194.3MPa和9.2%。復(fù)合材料的強(qiáng)化機(jī)制為細(xì)晶強(qiáng)化和準(zhǔn)晶顆粒強(qiáng)化。

    Abstract:

    To improve the mechanical properties of AZ91D alloy, squeeze casting process was employed to fabricate AZ91D magnesium matrix composites reinforced with stable icosahedral quasicrystal particles which were introduced as Mg-Zn-Y quasicrystal master alloy. The effects of quasicrystal master alloy content on microstructure and mechanical properties of composites were investigated. The results show that squeeze casting process is an effective method to refine grain size. The composites comprise α-Mg matrix, β-Mg17Al12 phases that disperse on grain boundaries and Mg3Zn6Y quasicrystal particles. A stable interface between the quasicrystal particles and the Mg matrix is observed. The composite exhibits the maximum ultimate tensile strength of 194.3 MPa and the maximum elongation of 9.2% respectively when the mass fraction of quasicrystal master alloy is 5%. The reinforcement mechanism is concluded as fine-grain strengthening and quasicrystal particle strengthening.

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

楊玲,侯華,趙宇宏,楊曉敏.擠壓鑄造準(zhǔn)晶增強(qiáng)AZ91D鎂基復(fù)合材料組織與性能[J].稀有金屬材料與工程,2016,45(8):1978~1982.[Yang Ling, Hou Hua, Zhao Yuhong, Yang Xiaomin. Microstructure and mechanical properties of squeeze casting quasicrystal reinforced AZ91D magnesium matrix composites[J]. Rare Metal Materials and Engineering,2016,45(8):1978~1982.]
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:2015-07-10
  • 最后修改日期:2015-08-23
  • 錄用日期:2015-09-07
  • 在線發(fā)布日期: 2016-10-09
  • 出版日期: