@inproceedings{c4ba6dab56794181bf293fe7552ce9c7,
title = "Microstructure variation in the arc-melted Cr-Cr 2Nb hypereutectic alloy",
abstract = "Microstructure of the arc-melted Cr-20at%Nb alloy solidified in different positions was investigated using optical microscope (OM) and scanning electron microscope (SEM). The results show that fully coupled eutectic was developed at the bottom of the ingot and then the eutectic experienced a columnar to equiaxed transition due to the decrease of G/V ratio (G the thermal gradient and V the solidification rate) with increasing the solidification distance. A novel lamellar structure was observed in the middle side of the arc-melted ingot, which may form by means of the eutectoid reaction of C14-Cr 2Nb→C15-Cr 2Nb+Cr ss. With the increase of the solidification distance from the middle side to the top side, the primary Cr 2Nb phase underwent a nonfaceted to faceted transition.",
keywords = "Arc melting, Columnar to equiaxed transition, Laves phase, Solidification rate",
author = "Kewei Li and Shuangming Li and Yunlong Xue and Hengzhi Fu",
year = "2012",
doi = "10.4028/www.scientific.net/AMR.548.328",
language = "英语",
isbn = "9783037854532",
series = "Advanced Materials Research",
pages = "328--332",
booktitle = "Material and Manufacturing Technology III",
note = "3rd International Conference on Material and Manufacturing Technology, ICMMT 2012 ; Conference date: 05-05-2012 Through 06-05-2012",
}