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脈沖磁場(chǎng)對(duì)TC4合金時(shí)效過程中析出相的影響
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內(nèi)蒙古科技大學(xué)

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內(nèi)蒙古自治區(qū)自然科學(xué)基金項(xiàng)目(2018MS05008)；內(nèi)蒙古自治區(qū)自然科學(xué)基金項(xiàng)目(2020MS05046)


Effect of pulsed magnetic field on precipitates in aging process of TC4 alloy
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Natural Science Foundation of Inner Mongolia(2018MS05008)；Natural Science Foundation of Inner Mongolia(2020MS05046)

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    摘要:

    摘 要: 本文將脈沖磁場(chǎng)施加在TC4鈦合金時(shí)效過程中，分析脈沖磁場(chǎng)對(duì)TC4時(shí)效后顯微組織及力學(xué)性能的影響。通過引入擴(kuò)散理論，探究脈沖磁場(chǎng)在時(shí)效過程中對(duì)析出相的影響。結(jié)果表明，經(jīng)過脈沖磁場(chǎng)處理后，顯微組織中的析出相數(shù)量明顯增多，尺寸變小，且分布更加彌散。外加脈沖磁場(chǎng)時(shí)效0.5h相較于未施加磁場(chǎng)時(shí)效4h，抗壓強(qiáng)度增加了30MPa，維氏硬度提高了35.7HV5，脈沖磁場(chǎng)可以促進(jìn)二次相析出，極大的減少了時(shí)效所需的時(shí)間。從擴(kuò)散角度分析，脈沖磁場(chǎng)通過使原子團(tuán)簇受到電子風(fēng)力和磁化應(yīng)力的耦合作用，從而提升了擴(kuò)散通量，促進(jìn)二次相析出。

    Abstract:

    Abstract:In this paper, pulsed magnetic field was applied to the aging process of TC4 titanium alloy. The effect of pulsed magnetic field on the mechanical properties and microstructure of TC4 was analyzed.By introducing atomic diffusion theory, the effect of pulsed magnetic field on precipitated phase in aging process was investigated.The results show that,After pulsed magnetic field treatment, the number of precipitates in the microstructure increases obviously, the size becomes smaller, and the distribution is more dispersed.The aging time of 0.5 h with pulsed magnetic field was compared with that of 4 h without magnetic field,The Vickers hardness increased by 35.7 HV5 and the compressive strength raise 30 MPa.Pulsed magnetic field can promote the precipitation of secondary phase, which greatly reduces the aging time.From the heory of diffusion, the pulsed magnetic field can increase the diffusion flux and promote the secondary phase precipitation by coupling the electron wind force and magnetization stress.

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孫中豪,邢淑清,賀帥,程橋,麻永林,賀驍勇.脈沖磁場(chǎng)對(duì)TC4合金時(shí)效過程中析出相的影響[J].稀有金屬材料與工程,2022,51(1):273~279.[孫中豪,Xing Shuqing, He Shuai, Cheng Qiao, Ma Yonglin, He Xiaoyong. Effect of pulsed magnetic field on precipitates in aging process of TC4 alloy[J]. Rare Metal Materials and Engineering,2022,51(1):273~279.]
DOI：10.12442/j. issn.1002-185X.20210053

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  • 收稿日期:2021-01-18
  • 最后修改日期:2021-02-19
  • 錄用日期:2021-03-22
  • 在線發(fā)布日期: 2022-02-09
  • 出版日期: 2022-01-28