Search

Article

x

留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码

Influence of pulling velocity on microstructure and morphologies of SCN-DC eutectic alloy

Bai Bei-Bei Lin Xin Wang Li-Lin Wang Xian-Bin Wang Meng Huang Wei-Dong

Influence of pulling velocity on microstructure and morphologies of SCN-DC eutectic alloy

Bai Bei-Bei, Lin Xin, Wang Li-Lin, Wang Xian-Bin, Wang Meng, Huang Wei-Dong
PDF
Get Citation

(PLEASE TRANSLATE TO ENGLISH

BY GOOGLE TRANSLATE IF NEEDED.)

Metrics
  • Abstract views:  819
  • PDF Downloads:  682
  • Cited By: 0
Publishing process
  • Received Date:  03 July 2013
  • Accepted Date:  06 August 2013
  • Published Online:  05 November 2013

Influence of pulling velocity on microstructure and morphologies of SCN-DC eutectic alloy

  • 1. State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi’an 710072, China
Fund Project:  Project supported by the State Key Development Program for Basic Research of China (Grant No. 2011CB610402), and the National Natural Science Foundation of China (Grant Nos. 50971102, 51271213).

Abstract: Eutectic solidification is very important in the development of new materials in which the periodic multiphase structures may have a remarkable or enhanced functionality. The morphology evolution during eutectic solidification is investigated experimentally using slab-geometry slides of succinonitrile-(D)camphor (SCN-DC) transparent organic eutectic material. By specifically focusing on the effect of pulling velocity on microstructure in directional growth, the temperature gradient and the thickness are kept the same in all the experiments. It is found that eutectic seeds first occur in the grain boundary channel or the specimen side-wall groove. And the growth of eutectic seeds is both parallel to the direction of temperature gradient and along the liquid/solid interface at the same time. At a low pulling velocity (0.064–0.44 μm/s), the macroscopic growth morphology is flat, and the inner microstructure is rod-shaped, which is parallel to the growth direction. It is obvious that the eutectic spacing becomes smaller with the increase of pulling velocity. At a high pulling velocity (0.67–1.56 μm/s), the macroscopic growth morphology becomes cellular. However, the inner microstructure is still rod-shaped, but its distribution is radially outward. And the eutectic spacing decreases as pulling velocity increases.

Reference (24)

Catalog

    /

    返回文章
    返回