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等通道轉(zhuǎn)角擠壓法制備超細(xì)晶純鈦的研究進(jìn)展
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河海大學(xué)力學(xué)與材料學(xué)院,河海大學(xué)力學(xué)與材料學(xué)院,河海大學(xué)力學(xué)與材料學(xué)院,河海大學(xué)力學(xué)與材料學(xué)院

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中國(guó)江蘇省自然科學(xué)基金 (BK20131373); 中央高校基本科研專項(xiàng)資金(HHU2016B10314);江蘇省高校青藍(lán)工程


Research progress of ultrafine-grained pure titanium produced by equal-channel angular pressing
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College of Mechanics and Materials,Hohai University,College of Mechanics and Materials,Hohai University,College of Mechanics and Materials,Hohai University,College of Mechanics and Materials,Hohai University

Fund Project:

Natural Science Foundation of Jiangsu Province of China (BK20131373); Fundamental Research Funds for the Hohai Universities (HHU2016B10314); Qing Lan Project of Jiangsu Province of China

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    摘要:

    近年來(lái),圍繞超細(xì)晶純鈦的制備及其性能提升方面開展了許多研究。本文綜述了制備超細(xì)晶純鈦塊材的等通道轉(zhuǎn)角擠壓工藝及其重要參數(shù),分析了擠壓過(guò)程中純鈦的位錯(cuò)滑移及孿晶變形機(jī)制。超細(xì)晶純鈦的強(qiáng)度、塑性、抗疲勞性能顯著提高,而耐蝕性測(cè)試結(jié)果呈多樣性,有待進(jìn)一步研究。等通道轉(zhuǎn)角擠壓和后續(xù)熱機(jī)械處理的結(jié)合,可進(jìn)一步提高超細(xì)晶純鈦的綜合性能,表明采用ECAP技術(shù)制備的超細(xì)晶純鈦在各行各業(yè)有著廣闊的發(fā)展前景。

    Abstract:

    Recently, fabrication techniques of ultrafine-grained (UFG) pure titanium have been investigated to achieve enhanced performance. This paper reveals the process and properties of bulk ultrafine-grained pure titanium by equal-channel angular pressing (ECAP), with the influence of experimental parameters. Special attention is given to the deformation mechanisms via dislocation slip and twinning during ECAP. It is demonstrated that the change of microstructure in UFG Ti leads to significant enhancement of mechanical properties. Some mixed results about corrosion resistance of UFG Ti indicate the further investigations necessary. Special emphasis is placed on the combination of ECAP and other treatments for improving overall properties. It is shown that significant enhancement has been made in UFG commercial-purity Ti after ECAP plus thermal-mechanical treatment, suggesting promising prospects of ECAP process for titanium alloys in various industries.

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谷艷霞,馬愛斌,江靜華,宋丹.等通道轉(zhuǎn)角擠壓法制備超細(xì)晶純鈦的研究進(jìn)展[J].稀有金屬材料與工程,2017,46(12):3639~3644.[Gu Yanxia, Ma Aibin, Jiang Jinghua, Song Dan. Research progress of ultrafine-grained pure titanium produced by equal-channel angular pressing[J]. Rare Metal Materials and Engineering,2017,46(12):3639~3644.]
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  • 收稿日期:2016-10-29
  • 最后修改日期:2017-02-16
  • 錄用日期:2017-02-20
  • 在線發(fā)布日期: 2018-01-04
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