| Fe-30Mn-11Al-1C合金的调幅分解 |
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| 引用本文： | 夏振军,常帅,覃作祥,陆兴.Fe-30Mn-11Al-1C合金的调幅分解[J].大连交通大学学报,2012(5):78-81,89. |
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| 作者姓名： | 夏振军 常帅 覃作祥 陆兴 |
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| 作者单位： | 大连交通大学材料科学与工程学院 |
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| 摘 要： | 通过金相、XRD、透射电镜和显微硬度，分析了Fe-30Mn-11A1-1C合金在450～750℃温度区间时效的组织和硬度的变化规律，研究结果表明时效温度低于450℃奥氏体难以析出第二相，其硬度变化也不大；在550～750℃时效2h，奥氏体晶内产生调幅分解，晶界析出Fe3Al，电镜可观察到典型的调幅结构，随时效温度升高调幅结构波长变大；在650℃经2h时效，有βMn析出；调幅分解及析出相都可以提高合金硬度，但析出物粗化使硬度明显降低．
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| 关 键 词： | 调幅分解 时效 析出 |
Spinodal Decomposition of Fe-30Mn-11Al-1C Alloy |
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| XIA Zhen-jun,CHANG Shuai,QIN Zuo-xiang,LU Xing.Spinodal Decomposition of Fe-30Mn-11Al-1C Alloy[J].Journal of Dalian Jiaotong University,2012(5):78-81,89. |
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| Authors: | XIA Zhen-jun CHANG Shuai QIN Zuo-xiang LU Xing |
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| Institution: | (School of Materials Science and Engineering,Dalian Jiaotong University,Dalian 116028,China) |
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| Abstract: | Spinodal decomposition of an Fe-30Mn-11Al-1C in the temperature range of 450～750℃ were studied by metallographic examination,XRD,TEM and microhardness.The spinodal structure occurs in the alloy after aging in the temperature range of 550～750℃ for 2 h,and the spinodal structural wavelength changes with increasing temperature.Fe3Al phase precipitates in the temperature range of 450～750℃,and β Mn precipitates at 650℃ for 2 h.Both spinodal decomposition and precipitation phase can increase the hardness of the alloy. |
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| Keywords: | spinodal decomposition aging precipitation |
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