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Effects of pre-deformation on precipitation behaviors and properties in Cu- Ni-Si-Cr alloy

机译：预变形对Cu-Ni-Si-Cr合金中析出行为和性能的影响

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摘要

The effects of pre-deformation on the precipitation behaviors and properties in Cu-Ni-Si-Cr alloy were investigated. The results showed the electrical conductivity and the strength of the alloys after peak aging increased with the pre-deformation amount. Quantitative analyses demonstrated the deformation-induced defects improved the precipitation and the number density of precipitates but reduced their average radii. As a result, the conductivity improved due to the slight promotion of precipitation while the strength increased mostly from the enhanced precipitate strengthening and then from the unremoved work hardening. At elevated temperatures, the effects of pre-deformation were greatly weakened and then the difference among the alloys after different treatments disappeared.
机译：研究了预形变对Cu-Ni-Si-Cr合金中析出行为和性能的影响。结果表明，峰值时效后合金的电导率和强度随预变形量的增加而增加。定量分析表明，变形引起的缺陷改善了析出物和析出物的数量密度，但降低了其平均半径。结果，由于析出物的轻微促进而提高了电导率，而强度的提高主要是由于强化的析出物增强，然后是由于未去除的加工硬化。在升高的温度下，预变形的作用大大减弱，然后经过不同处理的合金之间的差异消失了。

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  • 来源
    《Materials Science and Engineering》 |2019年第10期|501-507|共7页
  • 作者

    Wu Yake; Li Ya; Lu Junyong; Tan Sai; Jiang Feng; Sun Jun;

  • 作者单位

    Xi Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China;

    Xi Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China;

    Naval Univ Engn, Natl Key Lab Vessel Integrated Power Syst Technol, Wuhan 430033, Hubei, Peoples R China;

    Naval Univ Engn, Natl Key Lab Vessel Integrated Power Syst Technol, Wuhan 430033, Hubei, Peoples R China;

    Xi Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China;

    Xi Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Cu-Ni-Si-Cr alloy; Pre-deformation; Defect; Precipitation; Properties;

    机译：Cu-Ni-Si-Cr合金;预变形;缺陷;析出;性能;

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