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
Cu 含量對Ti-Cu合金半固態(tài)可鍛性及鍛造后力學(xué)性能的影響
DOI:
作者:
作者單位:

長安大學(xué),長安大學(xué),長安大學(xué),長安大學(xué),西北有色金屬研究院,長安大學(xué),長安大學(xué)

作者簡介:

通訊作者:

中圖分類號:

基金項(xiàng)目:

國家973項(xiàng)目，國家自然科學(xué)基金項(xiàng)目


Effect of Cu concentration on the semi-solid formability and mechanical properties of Ti-Cu alloy
Author:
Affiliation:

School of materials science and engineering,Chang’an University,School of materials science and engineering,Chang’an University,School of materials science and engineering,Chang’an University,School of construction machinery,Chang’an University,Northwest Institute for nonferrous metal research,Xi’an,School of materials science and engineering,Chang’an University,School of materials science and engineering,Chang’an University

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
    • |
  • 文章評論
    摘要:

    通過鐓鍛試驗(yàn)和模鍛實(shí)驗(yàn)研究了Ti-Cu系合金半固態(tài)鍛造行為，并對鍛材進(jìn)行了拉伸試驗(yàn)，討論了Cu含量對半固態(tài)可鍛性及力學(xué)性能的影響。結(jié)果表明：1000 °C至1150°C半固態(tài)鍛造較常規(guī)鍛造具有較小的頂鍛壓力；其中，1000 °C至1050°C間半固態(tài)鍛造的Ti-Cu系合金均表現(xiàn)出較好的可鍛性，在75%的鍛造變形量下無明顯缺陷。分析認(rèn)為，Ti-Cu系列合金中含有較多的低熔點(diǎn)Ti2Cu相，隨著半固態(tài)溫度升高或Cu含量的增加，材料中的液相含量增加，增加的液相含量對變形起到潤滑作用，減少了固相變形引起的應(yīng)力集中，有效的降低了變形抗力，改善了成形性。力學(xué)性能研究表明：半固態(tài)鍛造Ti-Cu系合金較常規(guī)鍛造合金強(qiáng)度升高，塑性降低。隨著Cu含量的升高，合金的強(qiáng)度明顯提升，塑性降低。分析認(rèn)為：力學(xué)性能的變化主要是由于Ti2Cu相析出含量、形態(tài)和分布相關(guān)，隨著Cu含量和半固態(tài)溫度的升高，更多Ti2Cu相在晶內(nèi)和晶界析出，引起析出強(qiáng)化作用，同時(shí)，晶界析出的針狀Ti2Cu相形成了偏析帶，降低了合金塑形。

    Abstract:

    The formability during semi-solid deformation of Ti-Cu alloys and its mechanical properties after semi-solid forging are investigated. The formability is evaluated by upsetting and die forging tests. Tensile test is also performed to study the mechanical properties of Ti-Cu alloy after semi-solid forging. The results show that low upsetting force can be obtained in the semi-solid state ranging from 1000 °C to 1150°C, which is better than by conventional processing. Die forging tests show excellent workability with a forging ratio of 75% at the temperatures ranging from 1000 °C to 1050°C. The Ti2Cu phase increases with the increase of Cu concentration, and more liquid precipitates during semi-solid deformation at higher temperatures and Cu concentrations, which relaxes the stress concentration caused by solid deformation and improves the formability. Tensile test reveals that semi-solid forged Ti-Cu alloy exhibits higher strength and lower ductility than conventional forged alloy. The Ti-Cu alloy has lower ductility and higher strength with the increasing of Cu concentration. The difference in tensile properties is attributed to the varieties of Ti2Cu precipitates at different Cu concentration and semi-solid forging temperature.

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

陳永楠,趙祎平,霍亞洲,宋緒丁,趙永慶,畢朝朝,李撩. Cu 含量對Ti-Cu合金半固態(tài)可鍛性及鍛造后力學(xué)性能的影響[J].稀有金屬材料與工程,2016,45(6):1406~1412.[Chen Yongnan, Zhao Yiping, Huo Yazhou, Song Xuding, Zhao Yongqing, Bi Zhaozhao, Li liao. Effect of Cu concentration on the semi-solid formability and mechanical properties of Ti-Cu alloy[J]. Rare Metal Materials and Engineering,2016,45(6):1406~1412.]
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:2015-08-02
  • 最后修改日期:2015-12-08
  • 錄用日期:2015-12-08
  • 在線發(fā)布日期: 2016-10-08
  • 出版日期: