Laser-induced thermal and spatial nanocrystallization of amorphous Fe–Si–B alloy
Laser-induced thermal and spatial nanocrystallization of amorphous Fe–Si–B alloy
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DOI：
10.1016/j.scriptamat.2011.12.028
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发表时间：
2012-04
影响因子：
6
通讯作者：
S. Katakam;J. Hwang;H. Vora;S. Harimkar;R. Banerjee;N. Dahotre
中科院分区：
文献类型：
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作者：
S. Katakam;J. Hwang;H. Vora;S. Harimkar;R. Banerjee;N. Dahotre
通过激光处理在非晶Fe-Si-B合金中诱导了定点纳米晶化。特定地点的透射电子显微镜显示，激光轨迹边缘有均匀的纳米晶相，中心有部分失透的显微结构。所产生的不同的微观结构是由于不同的热历史过程中开发的处理和结果合理化，使用基于热传递的多物理模型。通过电阻率测量研究了激光诱导结构弛豫和晶化事件对电输运性质的影响。
Site-specific nanocrystallization in an amorphous Fe–Si–B alloy was induced via laser processing. Site-specific transmission electron microscopy revealed a homogeneous nanocrystalline phase at the edge and partially devitrified microstructure at the center of the laser track. The diverse microstructures generated are due to different thermal histories developed during processing and the results are rationalized using a heat transfer based multi-physics model. The influence of laser-induced structural relaxation and crystallization events on the electrical transport properties are studied through resistivity measurements.