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熱處理對(duì)雙輥鑄軋ZK60鎂合金組織及阻尼性能的影響
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江蘇科技大學(xué)江蘇省先進(jìn)焊接技術(shù)重點(diǎn)試驗(yàn)室,江蘇科技大學(xué)江蘇省先進(jìn)焊接技術(shù)重點(diǎn)試驗(yàn)室,江蘇科技大學(xué)江蘇省先進(jìn)焊接技術(shù)重點(diǎn)試驗(yàn)室,江蘇科技大學(xué)張家港校區(qū)冶金與材料工程學(xué)院,江蘇科技大學(xué)江蘇省先進(jìn)焊接技術(shù)重點(diǎn)試驗(yàn)室

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江蘇省高校自然科學(xué)基金資助(13KJB430010), 2014年度江蘇省博士后科研資助項(xiàng)目(1401168C)和江蘇省高校優(yōu)勢學(xué)科建設(shè)工程資助項(xiàng)目


Effect of heat treatment on microstructure and damping capacity of twin roll cast ZK60 alloy
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Provincial Key Lab of Advanced Welding Technology,Jiangsu University of Science and Technology,Zhenjiang,Provincial Key Lab of Advanced Welding Technology,Jiangsu University of Science and Technology,Zhenjiang,Provincial Key Lab of Advanced Welding Technology,Jiangsu University of Science and Technology,Zhenjiang,,Provincial Key Lab of Advanced Welding Technology,Jiangsu University of Science and Technology,Zhenjiang

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    摘要:

    本文采用雙輥鑄軋法制備了ZK60鎂合金條帶，采用金相顯微鏡（OM）和動(dòng)態(tài)機(jī)械分析儀（DMA）研究了熱處理后ZK60鎂合金條帶的組織和阻尼性能。退火處理后，組織較為均勻。T6處理后組織轉(zhuǎn)變?yōu)榫鶆虻牡容S晶。在溫度-阻尼譜中出現(xiàn)了兩個(gè)溫度阻尼峰，P1峰為弛豫型阻尼峰， 其激活能為132KJ/mol，P2峰為非弛豫型再結(jié)晶阻尼峰。T6處理?xiàng)l件下，時(shí)效時(shí)間為6小時(shí)時(shí)，呈現(xiàn)典型的位錯(cuò)型應(yīng)變-阻尼圖譜；在其他時(shí)效時(shí)間下，呈現(xiàn)兩種混合位錯(cuò)型的應(yīng)變-阻尼圖譜。T6態(tài)雙輥鑄軋ZK60鎂合金的應(yīng)變-阻尼性能遵循G-L理論。

    Abstract:

    ZK60 alloy strip was fabricated by Twin Roll Casting (TRC for short) technology in this paper. The effect of heat treatment on microstructure and damping capacities was discussed by using optical microscope (OM) and dynamic mechanical analyzer (DMA). The homogeneous structure was obtained after annealing treatment. The equiaxed recrystallized grains were obtained after T6 treatment. The damping peak P1 is a relaxation process. The activation energy H for P1 was 132KJ/mol. The damping peak P2 is not a relaxation process. It is a recrystallized damping peak. The classical curve of strain amplitude dependence of damping capacity of TRC ZK60 strip was present after T6 treatment (aging for 6hrs), but the curves of strain amplitude dependence of damping capacity of TRC ZK60 strip with two different dislocations system were obtained after the other T6 treatment. Strain amplitude dependence of damping capacity of TRC ZK60 strip after T6 treatment abide by the G-L theory.

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臧千昊,劉忠明,陳洪美,張靜,金云學(xué).熱處理對(duì)雙輥鑄軋ZK60鎂合金組織及阻尼性能的影響[J].稀有金屬材料與工程,2016,45(6):1578~1582.[Zang Qianhao, Liu Zhongming, Chen Hongmei, Zhang Jing, Jin Yunxue. Effect of heat treatment on microstructure and damping capacity of twin roll cast ZK60 alloy[J]. Rare Metal Materials and Engineering,2016,45(6):1578~1582.]
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  • 收稿日期:2015-07-21
  • 最后修改日期:2015-11-13
  • 錄用日期:2015-12-08
  • 在線發(fā)布日期: 2016-10-08
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