| 查看: 120 | 回复: 0 | |||
| 当前主题已经存档。 | |||
monicajing铜虫 (小有名气)
|
[交流]
【资源】Processing and Behavior of Fe-Based Metallic Glass
|
||
|
Processing and Behavior of Fe-Based Metallic Glass Components via Laser-Engineered Net Shaping Metallurgical and Materials Transactions A B. Zheng1, Y. Zhou1, J. E. Smugeresky2 and E. J. Lavernia1 (1) Department of Chemical Engineering and Materials Science, University of California, Davis, CA 95616, USA (2) Sandia National Laboratories, Livermore, CA 94551-0969, USA Abstract In this article, the laser-engineered net shaping (LENS) process is implemented to fabricate net-shaped Fe-based Fe-B-Cr-C-Mn-Mo-W-Zr metallic glass (MG) components. The glass-forming ability (GFA), glass transition, crystallization behavior, and mechanical properties of the glassy alloy are analyzed to provide fundamental insights into the underlying physical mechanisms. The microstructures of various LENS-processed component geometries are characterized via scanning electron microscopy (SEM), X-ray diffraction (XRD), differential scanning calorimetry (DSC), and transmission electron microscopy (TEM). The results reveal that the as-processed microstructure consists of nanocrystalline α-Fe particles embedded in an amorphous matrix. An amorphous microstructure is observed in deposited layers that are located near the substrate. From a microstructure standpoint, the fraction of crystalline phases increases with the increasing number of deposited layers, effectively resulting in the formation of a functionally graded microstructure with in-situ-precipitated particles in an MG matrix. The microhardness of LENS-processed Fe-based MG components has a high value of 9.52 GPa. [ Last edited by hslining on 2009-9-21 at 23:23 ] |
回复此楼» 猜你喜欢
有没有人能给点建议
已经有5人回复
-
假如你的研究生提出不合理要求
已经有12人回复
-
实验室接单子
已经有7人回复
-
全日制（定向）博士
已经有5人回复
-
萌生出自己或许不适合搞科研的想法，现在跑or等等看？
已经有4人回复
-
Materials Today Chemistry审稿周期
已经有4人回复
-
参与限项
已经有3人回复
-
对氯苯硼酸纯化
已经有3人回复
-
所感
已经有4人回复
-
要不要辞职读博？
已经有7人回复