Ni40.5Co32.5Al27合金冷轧带材阻尼性能与相变和组织的关系
Effects of Martensitic Transformation and Microstructure on Damping Capacity of Cold Rolled Ni40.5Co32.5Al27 Alloy Ribbons
摘 要
对Ni40.5Co32.5Al27合金带材进行三种热处理,分析了不同试样的显微组织,采用微分差热分析测定了马氏体转变温度,用动态热机械谱仪研究了相变及阻尼性能.结果表明:经过1 623 K×5 h直接水冷获得基体相为竹节状粗大再结晶晶粒;而慢冷(0.5 K/min)到1 273 K后水冷时析出粗大γ相,快冷(10 K/min)至1 273 K再水冷则析出较均匀细小的γ相.降温过程中合金带材在马氏体相变区出现阻尼峰,并且阻尼峰随频率降低而升高;马氏体相变结束后,合金带材的阻尼性能随温度降低而继续升高;合金带材的阻尼性能随γ相粗化而增强,并且室温附近超过0.04,有望成为新型阻尼材料.
马氏体相变
阻尼性能
Ni-Co-Al alloy
martensitic transformation
damping capacity
Abstract
Ni40.5Co32.5Al27 alloy ribbons were heat treated by 3 different methods.The microstructure was observed by OM.Martensitic transformation temperatures and damping capacities were investigated by differential scanning calorimetry (DSC) and dynamic mechanical spectroscopy (DMS).A bamboo-liked big size recrystallized grains was formed after water quenched from 1 623 K×5 h.Uniform fine γ phase deposited out by fast cooling (10 K/min) to 1 273 K and big size γ phase deposited out by slow cooling (0.5 K/min) .A damping peak appeared in the martensitic transformation temperature range of 371-415 K in cooling process.The damping peak value increased with the decreasing of oscillation frequency.After complete martensitic transformation,the damping capacity still increased with the decreasing of temperature.The damping capacities of Ni40.5Co32.5Al27 alloy ribbons increasd with the increasing of grain size and were higher than 0.04 at ambient temperatures.It is indicated that Ni-Co-Al alloy is a promising new damping material.
中图分类号 TG113.26 TG111.5
所属栏目
基金项目
收稿日期 2005/8/22
修改稿日期 2005/11/3
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备注罗丰华 (1969-),男,湖南攸县人,副教授,博士.
引用该论文: LUO Feng-hua,CHEN Jia-yan,OIKAWA Katsunari,ISHIDA Kiyohito. Effects of Martensitic Transformation and Microstructure on Damping Capacity of Cold Rolled Ni40.5Co32.5Al27 Alloy Ribbons[J]. Materials for mechancial engineering, 2006, 30(7): 37～40
罗丰华,陈嘉砚,及川胜成,石田清仁. Ni40.5Co32.5Al27合金冷轧带材阻尼性能与相变和组织的关系[J]. 机械工程材料, 2006, 30(7): 37～40
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参考文献
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【4】De Santis S,Trochu F,Ostiguy G.Stress-strain hysteresis and damping in MnCu and NiTi alloy[J].Metallurgical and Materials Transactions A,2001,32A:2489-2498.
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【8】Karaca H E,Karaman I,Lagoudas D C,et al.Recoverable stress-induced martensitic transformation in a ferromagnetic CoNiAl alloy[J].Scripta Materialia,2003,49:831-836.
【9】Tanaka Y,Ohmori T,Oikawa K,et al.Ferromagnetic Co-Ni-Al shape memory alloys with two-phase structure[J].Materials Transactions JIM,2004,45(2):427-430.
【10】罗丰华,陈康华,Oikawa K,等.Co41Ni33Al26合金的再结晶、马氏体相变和铁磁特性[J].金属热处理,2005,30(9):1-5.
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【12】Vasil’ev A N,Buchel’nikov V D,Takagi T,et al,Shape memory ferromagnets[J].Physics-Uspekhi,2003,46(6):559-588.
【13】徐祖耀.相变内耗与伪滞弹性[J].金属学报,2003,39(11):1121-1126.
【14】关德林,魏海军,于志伟,等.Zr对Zn-Al合金阻尼性能影响的研究[J].机械工程材料,2002,26(4):32-34.
【15】罗丰华,Oikawa K,Ishida K.Co41Ni32Al27-xSix合金的马氏体相变和磁性转变[J].金属学报,2005,41(7):680-684.
【16】Murakami Y,Otsuki K,Hanada S,et al.Crystallography of stress-induced B2→7R martensitic transformation in Ni-37.0 at%Al alloy[J].Materials Transactions JIM,1992,33(2):282-288.
【17】Kositsyn S V,Katayeva N V,Kositsyna I I,et al.Martensitic transition and ordering in heat-resistant Ni-Co-Cr-Al/eutectics[J].Journal de Physique IV France,2003,112:1067-1070.
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