外加电场对Cu-Zn-Al合金中类流态胞区响应特征的影响
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摘要
利用金相显微镜观察了电场对Cu-Zn-Al合金中类流态胞区响应特征的影响。在试样两端施加弱的直流电场后,发现类流态胞区及其周围的亮度和形状产生了变化。实验中拍摄了数十张照片,记下了胞区的变化过程。对该试样进行了扫描电镜及电子探针能谱分析,发现类流态胞区的铜含量比基体少,铝、锌含量比基体多,表明类流态胞区在电场作用下存在质量与能量的迁移和扩散过程。通过计算分形维数,发现类流态胞区具有分形特征并且分形维数值随时间延长而振荡变化。利用电场对材料中晶格缺陷的作用讨论了电场对类流态胞区响应特征的影响。
In this paper, the influence of electric field on respondent characters of the quasi - fluid in Cu - Zn - Al alloy was observed by microscope. After DC electric field was forced on the sample, brightness and shape of quasi-fluid region changed. In this experiment, a series of photos showing the changing process of quasi - fluid were taken. We analyzed the alloys by SEM and found that copper content of quasi - fluid cell was lower than matrix, aluminium and zinc contents were higher. This suggests that there was diffusion process of atoms in quasi - fluid cell under electric field. Fractional dimension of the quasi - fluid region excited by electric field was calculated. It was found that the movement of the quasi - fluid region excited by electric field has fractional character and fractional dimension varies with time. The influence of electric field on the quasi - fluid was discussed comparing with effect of electric field on material defects.
In this paper, the influence of electric field on respondent characters of the quasi - fluid in Cu - Zn - Al alloy was observed by microscope. After DC electric field was forced on the sample, brightness and shape of quasi-fluid region changed. In this experiment, a series of photos showing the changing process of quasi - fluid were taken. We analyzed the alloys by SEM and found that copper content of quasi - fluid cell was lower than matrix, aluminium and zinc contents were higher. This suggests that there was diffusion process of atoms in quasi - fluid cell under electric field. Fractional dimension of the quasi - fluid region excited by electric field was calculated. It was found that the movement of the quasi - fluid region excited by electric field has fractional character and fractional dimension varies with time. The influence of electric field on the quasi - fluid was discussed comparing with effect of electric field on material defects.
引文
[1]高后秀,杨渝钦,刘文华,等.铜锌铝合金表面非线性振荡花 样的研究[J].金属热处理学报,1995,16(4):56-59.
[2]高后秀,张贵杰,陈泉水,等.辉长岩中的类流态研究[J].中 国科学(B辑),2003,33(2):105-110.
[3]高后秀,崔振铎,韩雅静,等.20CrMnTi钢表面的非线性振荡 现象[J].兵器材料科学与工程,2000,23(4):25-27,70.
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[5]郑熙铭,高后秀,杨渝钦,等.从能量释放过程进行震源机 理的实验研究[J].地震学报,1997,19(3):323-326.
[6]高后秀,杨敬武,王哲人,等.应用合金天然破裂特征进行 孕震机理研究[J].地球科学中国地质大学学报,1999.24 (4):387-392.
[7]张加万,高后秀,杨敬武,等.固体表面的非线性振荡现象及 其计算机仿真[J].天津大学学报,2001,34(1):35-39.
[8]高后秀,张贵杰,马军海,等.固体"类流态"实测数据的混沌 特征判定[J].材料热处理学报,2002,23(2):28-32.
[9]高后秀,刘文华,李宝银.Cu-Zn-Al合金表面非线性振荡 花样-自组织现象[J].天津大学学报,1997,30(5):567- 572.
[10]高后秀,张贵杰,马亚宁,等.外加应力场刺激下固体"类 流态"胞区的响应特征[J].材料热处理学报,2002,23(4): 62-65.
[11]胡卓超,何长树,赵骧,等.电场回复对08Al深冲钢板再 结晶组织及织构的影响[J].东北大学学报,2002,23(7): 663-666.
[12]周细枝,李尧,陈洪.电场和电流对7475铝合金再结晶的 影响[J].轻合金加工技术,2002,29(7):43-44.
[13]魏齐龙,陈铮,刘兵,等.电场时效对铝锂合金性能断 裂特征的影响[J].稀有金属,2002,26(3):161-165.
[2]高后秀,张贵杰,陈泉水,等.辉长岩中的类流态研究[J].中 国科学(B辑),2003,33(2):105-110.
[3]高后秀,崔振铎,韩雅静,等.20CrMnTi钢表面的非线性振荡 现象[J].兵器材料科学与工程,2000,23(4):25-27,70.
[4]高后秀,杨渝钦,等.固态合金中的非线性振荡现象观察 [J].科学通报,1998,43(15):1667-1671.
[5]郑熙铭,高后秀,杨渝钦,等.从能量释放过程进行震源机 理的实验研究[J].地震学报,1997,19(3):323-326.
[6]高后秀,杨敬武,王哲人,等.应用合金天然破裂特征进行 孕震机理研究[J].地球科学中国地质大学学报,1999.24 (4):387-392.
[7]张加万,高后秀,杨敬武,等.固体表面的非线性振荡现象及 其计算机仿真[J].天津大学学报,2001,34(1):35-39.
[8]高后秀,张贵杰,马军海,等.固体"类流态"实测数据的混沌 特征判定[J].材料热处理学报,2002,23(2):28-32.
[9]高后秀,刘文华,李宝银.Cu-Zn-Al合金表面非线性振荡 花样-自组织现象[J].天津大学学报,1997,30(5):567- 572.
[10]高后秀,张贵杰,马亚宁,等.外加应力场刺激下固体"类 流态"胞区的响应特征[J].材料热处理学报,2002,23(4): 62-65.
[11]胡卓超,何长树,赵骧,等.电场回复对08Al深冲钢板再 结晶组织及织构的影响[J].东北大学学报,2002,23(7): 663-666.
[12]周细枝,李尧,陈洪.电场和电流对7475铝合金再结晶的 影响[J].轻合金加工技术,2002,29(7):43-44.
[13]魏齐龙,陈铮,刘兵,等.电场时效对铝锂合金性能断 裂特征的影响[J].稀有金属,2002,26(3):161-165.
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