Paper Title:

Columnar Crystal Growth of Ti46Al0.5W0.5Si Alloys Directional Solidified by Rectangular Cold Crucible

Periodical Advanced Materials Research (Volumes 154 - 155)
Main Theme Materials Processing Technologies
Edited by Zhengyi Jiang, Xianghua Liu and Jinglong Bu
Pages 743-751
DOI 10.4028/www.scientific.net/AMR.154-155.743
Citation Jie Ren Yang et al., 2010, Advanced Materials Research, 154-155, 743
Online since October, 2010
Authors Jie Ren Yang, Rui Run Chen, Hong Sheng Ding, Jing Jie Guo, Heng Zhi Fu
Keywords Cold Crucible, Columnar Crystal, Directional Solidification, TiAl Alloy
Price US$ 28,-
Article Preview
View full size
Abstract

This paper has systematically studied the evolving process of column crystals of Ti46Al0.5W0.5Si alloys that is directionally solidified by rectangular cold crucible. The results showed that: the solid/liquid interface presented convex to the liquid metal due to the complicated influences by cold crucible. Overheating temperature and new crystal nucleus had great effects on the growth continuity and the stability of column crystals. Furthermore, the precipitation phases have been studied. As a result, the methods for controlling growing process of columnar crystals have been submitted, which are playing a critical role in optimizing experimental parameters and devising the construction-elements of cold crucible.