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固溶處理對(duì)含長(zhǎng)周期結(jié)構(gòu)Mg97Zn1Y2合金顯微組織及阻尼性能影響
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華東交通大學(xué)機(jī)電工程學(xué)院,華東交通大學(xué)機(jī)電工程學(xué)院

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Microstructure and damping of Mg97Zn1Y2 with or without solid solution treatment
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School of Mechanical and Electrical Engineering,East China Jiaotong University,School of Mechanical and Electrical Engineering,East China Jiaotong University

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    摘要:

    通過(guò)光學(xué)顯微鏡、掃描電鏡分析了鑄態(tài)及固溶處理態(tài)Mg97Zn1Y2合金的顯微組織,并利用EDS,XRD進(jìn)行了物相分析。研究發(fā)現(xiàn)固溶處理后,Mg97Zn1Y2合金中的長(zhǎng)周期結(jié)構(gòu)相發(fā)生長(zhǎng)大,由離散分布變?yōu)檫B續(xù)分布。阻尼測(cè)試結(jié)果顯示,固溶處理后Mg97Zn1Y2合金阻尼性能下降。通過(guò)對(duì)鑄態(tài)及固溶處理態(tài)Mg97Zn1Y2合金進(jìn)行阻尼-溫度譜分析,發(fā)現(xiàn)存在兩個(gè)內(nèi)耗峰：P1內(nèi)耗峰位置在150-250℃附近,峰寬很寬,是由位錯(cuò)機(jī)制而引起的內(nèi)耗峰；P2內(nèi)耗峰位置在350-500℃附近,初步認(rèn)為是晶界內(nèi)耗峰。

    Abstract:

    The microstructure of as-cast Mg97Zn1Y2 with or without solid solution treatment was analysised by OM and SEM.Meanwhile, phase analysis was carried out by EDS and XRD. After solid solution treatment, LPSO phase grow up,turning into continuous distribution in Mg97Zn1Y2.Through damping testing, it was found that the damping capacity of Mg97Zn1Y2 was declined after solid solution treatment.The damping-temperture specturm of the as-cast Mg97Zn1Y2 with or without solid solution treatment was also analysised. There are two internal friction peaks:damping peak P1 located between 150 ℃ and 250 ℃ and the peak is very wide, which is caused by the dislocation mechanism.Meanwhile, the damping peak P2 is near the 350-500 ℃, which is preliminary considered as grain boundary internal friction peak.

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萬(wàn)迪慶,利助民.固溶處理對(duì)含長(zhǎng)周期結(jié)構(gòu)Mg97Zn1Y2合金顯微組織及阻尼性能影響[J].稀有金屬材料與工程,2016,45(5):1245~1248.[Wan Diqing, Li zhumin. Microstructure and damping of Mg97Zn1Y2 with or without solid solution treatment[J]. Rare Metal Materials and Engineering,2016,45(5):1245~1248.]
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  • 收稿日期:2015-01-30
  • 最后修改日期:2015-05-05
  • 錄用日期:2015-06-11
  • 在線發(fā)布日期: 2016-06-02
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